educational record3. m.sc. physics (solid state) june, 1970 university of mysore, mysore, india . 4....

TANGALI S. SUDARSHAN

Carolina Distinguished Professor and Fellow of IEEE University of South Carolina

College of Engineering & Computing Columbia, South Carolina 29208

Telephone: 803.777.5174 . FAX: 803.777.8045 Email: [email protected]

EDUCATIONAL RECORD

1. Ph.D. Electrical Engineering (High Voltage Electrical Engineering) October 1974 University of Waterloo, Ontario, Canada Thesis title: Flashover of Solid Insulators in Vacuum 2. M.A.Sc. Electrical Engineering (High Voltage Engineering) August 1972 University of Waterloo, Ontario, Canada Thesis title: Field Enhancement due to Solid Insulators Subjected to High DC Stresses in Vacuum 3. M.Sc. Physics (Solid state) June, 1970 University of Mysore, Mysore, India 4. B.Sc. Physics, Mathematics, and Chemistry May 1968 University of Bangalore, Bangalore, India

SPECIALIZATIONS AND RESEARCH INTERESTS

Novel techniques of growth of silicon carbide (SiC) bulk and epitaxial films; surface modification to produce porous SiC; SiC material and device processing – wafering, surface polishing, oxidation, mask technology, dopant diffusion, implant activation, and metallization; fabrication and characterization of SiC high power Diodes and Transistors; novel defect characterization methods for wide bandgap semiconductors. Novel methods of Graphene growth by CVD. High field effects in SiC-based electronic materials and devices; high power solid-state switches; electron emission from thin films, as cold cathodes, for applications in field emission displays; microspacer insulation for flat panel displays; solid, liquid and gas insulated systems for high voltage power apparatus, underground power cable, overhead transmission systems and pulsed power systems; surface flashover of solid dielectrics and photoconducting materials in high vacuum and compressed gas systems; fast high voltage and current diagnostics, and low light level imaging; electric field studies using numerical techniques; insulator degradation and aging, coronas and arcs, power system protection. Special Interests in Humanitarian Engineering and Rural Science & Technology Education: In the developing world, develop and install inexpensive, easy to assemble-on-site, and easy to maintain Water Purification Units independent of the power grid that can remove turbidity, sterilize water, and remove harmful dissolved metals, fluorides, nitrates, etc. In village schools and community centers, provide solar lighting for children to study when the Sun sets. Assist village schools with Science & Technology education by providing easy to use instruments such as Microscopes, Telescopes, Lenses & Prisms; provide Science & Engineering project kits to facilitate hands-on learning in the areas of Physics (electricity, magnetism, etc.), Chemistry (chemical reactions), Biology (plant and animal). With support from Charitable Organizations, work with NGOs, Social Workers (including College Students), and Social Entrepreneurs to install Water Purification units, Solar Lighting, and to enhance Science & Technology literacy in rural parts of India.

mailto:[email protected]

RESUME: Tangali S. Sudarshan - 2

EXPERIENCE

September 2006 Department Chair, Department of Electrical Engineering to Aug. 2012: University of South Carolina

1987 to present: Carolina Distinguished Professor, Department of Electrical Engineering, University of

South Carolina Research activity in the areas of (1) SiC bulk growth, wafering, and surface preparation; defect characterization; CVD film growth; defect characterization; porous SiC; SiC material and device processing; device fabrication and characterization, (2) Surface flashover mechanisms along insulators and photoconducting materials in high vacuum for nanosecond excitations, (3) Insulator surface flashover mechanisms in vacuum and compressed gases for DC, 60 Hz and slow pulsed excitations, (4) High field insulation relevant to vacuum microelectronics, (5) Design of high current, high voltage crowbar switch for fusion applications, (6) Study of the characteristics of high vacuum and compressed gas gaps used as high voltage, high current switching elements, (7) Coating of metal surfaces with liquid metals for applications in high power switches, (8) Application of plasmas to metal surface coatings and alloying, and (9) Characterization of the degradation of Barium Titanate insulated capacitors. 1982 - 1987: Associate Professor, Department of Electrical and Computer Engineering

University of South Carolina 1979 – 1982: Assistant Professor, Department of Electrical and Computer Engineering

University of South Carolina. 1974 - 1979: Research Officer in the Electrical Engineering Division

National Research Council of Canada, Ottawa Responsible for (1) the study of the deterioration of polymeric materials used in underground power cables, (2) developing additives to retard the degradation of polyethylene, to improve the overall reliability of the power system, (3) developing techniques to test insulating materials for resistance to discharges, (4) studying accelerated aging of insulating materials, and (5) studying the characteristics of insulating materials at cryogenic temperatures. 1971 - 1974: Research Assistant, University of Waterloo, Ontario, Canada Research work included study of mechanisms involved in the flashover of insulators in vacuum subject to high stresses. Measurement of electric fields were made in the proximity of insulators due to positive charging caused by HV stress. Suitable insulator coatings, which reduced the charging, were developed, improving breakdown performance by nearly 300%. The study also involved high-speed photography of electric arcs along insulator surfaces using an image converter camera, electron microprobe analysis of microparticles, and computer simulation of prebreakdown phenomena.

HONORS AND AWARDS

• William G. Dunbar ‘High Voltage Award’ by 2012 IEEE Intl Power Modulator and 2012 High Voltage Conference (IEEE Dielectrics and Electrical Insulation Society.)

• Russell Research Award awarded by USC for innovative research 2010 • USC International Advocate award for student outreach to international students 2010 • Carolina Trustee Professorship awarded by USC Board of Trustees 2009 • Governor’s Distinguished Professor award by the Commission on Higher Education 2007 • Carolina Distinguished Professor reappointment in May 2007 for five years 2007

(continuous appointment from 1987 to 2012) • Irons Endowed Distinguished Lecturer, Rutgers University, the State University 2007

Of New Jersey 2007 • Michael J. Mungo Distinguished Professor of the Year award 2006


• Governor’s Distinguished Professor Award 2006 • Fellow of the Institute of Electrical & Electronic Engineers (IEEE) 2005 • College of Engineering and Information Technology Research Achievement Award 2001 • Carolina Distinguished Professor 1995 to present • Carolina Research Professor 1986 to 1994 • Alpha chapter of Mortar Board Excellence in Teaching Award Nov. 1991 • College of Engineering Research Achievement Award 1991 • Carolina Education Foundation Award for Research in Science and Engineering 1990 • Sigma Chi Outstanding Teacher of the Year 1985 • Outstanding Young Men of America 1982 • Who is Who in Technology 1980 • Council of Scientific and Industrial Research Fellowship 1970-1971 • India National Merit Scholarship 1968-1970

PROFESSIONAL AND HONOR ORGANIZATION MEMBERSHIPS, ACTIVITIES

• Fellow, Institute of Electrical and Electronics Engineering, Inc. (IEEE) • Eta Kappa Nu, national Electrical and Computer Engineering Honor Society • Tau Beta Pi, Engineering Honor Society • Sigma Xi, Scientific Research Society • Reviewer of proposals to NSF and member of NSF panel review of SBIR proposals. • Materials Research Society (MRS) • Electrical and Computer Engineering Department Heads Association (ECEDHA) • Southeast Electrical and Computer Engineering Department Heads Association (SECEDHA) • American Society for Engineering Education (ASEE) •

KEY RESEARCH ACCOMPLISHMENTS

1976 Development of Cr2O3 coatings to inhibit failure of insulators at high voltages. This coating is extensively used in electron accelerators, X-ray tubes, e-beam lithography equipment, and in faint object spectrograph in the Hubble space telescope. IEEE Trans. on Electrical Insulation

1984 Wetting of metal surfaces with a liquid metal. Widely used in high current switches. J. Appl. Phys 1987 Novel insulator designs. Widely used in high energy particle accelerators. IEEE Trans. on Electrical

Insulation 1989 Novel design of high voltage feedthrough. Used in INTELSAT traveling wave tubes. IEEE Trans. on

Electrical Insulation 1993 First ultra high voltage Si photoconducting Switch. IEEE Trans. on Electrical Insulation 1999 Development of High Field micro-spacer for Flat Panel Emitter Displays. SPIE Electronic Imaging 2000 First to perform selective doping of SiC by boron diffusion. Mat. Sci. Forum 2001 Produced defect-free SiC by local epitaxy. J. Crystal Growth 2002 Developed vacuum gap design rules for vacuum microelectronic applications. IEEE-DEI 2002 Developed a non-destructive wafer-scale method of delineating defects in SiC. APL (Patent issued) 2003 Demonstrated formation of nano-porous structures in SiC wafers. Electrochemical and Solid State Letters 2003 Demonstrated non-degradable SiC pin diodes; patent awarded June 2006. 2005 Developed basal plane dislocation-free epitaxial growth of SiC, APL 2006 Development of new method of forming a graded junction termination extension (JTE) for high voltage

SiC devices (up to 10 kV) using high temperature diffusion of boron; Novel Method of Forming Junction Termination Extension for SiC Power Devices, USCRF 000619, Patent submitted with Cree, Inc. 2009

2007 Demonstrated extremely high carrier lifetime (~10 us) in thin epilayers (~20-30 um); A method to increase and control carrier lifetime in SiC, USCRF 694


2008 Demonstrated step-bunch free epilayers in 4 degree off-cut substrates; optimized the epilayer growth for reduction of triangular defects from 850 cm-2 to 5 cm-2; Optimized the epilayer growth for reduction of triangular defects from 850 cm-2 to 5 cm-2

2008 Demonstrated high growth rate (>50 um/hr) using Dichlorosilane in 8 degree off substrates, J. of Crystal Growth

2009 Developed a method to grow semi-insulating SiC films with significant applications in SiC power devices including photo-conducting switches, J. of Crystal Growth

2010 Developed “growth-etch-regrowth” process to investigate the dislocation evolution in SiC epitaxial growth on eutectic etched surface, Journal of Crystal Growth

2010 Demonstrate homoepitaxial growth on 1° off 6H and 4° off 4H-SiC substrates, EMC 2010 Demonstrated reduction of in-grown stacking fault density in the SiC epilayer from ~104 to <10 cm-2,

ICSCRM 2011 2011 Developed an innovative split tube gas delivery system to analyze gas decomposition, parasitic deposition

and particle formation in the CVD reactor for growth study and optimization. ICSCRM 2011 2011 Evidence of carbon depletion in SiC epitaxy is provided for the first time; relative losses of carbon source

and silicon source determines the effective C/Si ratio and hence the doping. ICSCRM 2011 2011 Invented non-destructive eutectic pretreatment of the substrate to reduce/eliminate basal plane dislocations

in SiC epitaxial growth, ICSCRM 2011, USC disclosure, and US patent

PATENTS 14. “Methods of Growing a Silicon Carbide Epitaxial layer on a substrate to Increase carbide epitaxial layer on a

substrate to increase and control carrier lifetime,” Tangali S. Sudarshan and Amitesh Srivastava, U.S. Patent US 8,574,528 B2. Issued: Nov. 5, 2013. (http://www.google.com/patents/US8574528)

13. “Method of growing high quality epitaxial graphene with thickness controllability”, TS Sudarshan, T Rana, MVS Chandrashekhar, (US 61,850,414, pending)

12. “Method of growing high quality, thick SiC epitaxial films by eliminating silicon gas phase nucleation and suppressing parasitic deposition”, Tangali S. Sudarshan, Tawhid Rana, Haizheng Song, International Patent, Publication No. WO 2013/078219 A1, Publication Date: May 30, 2013. (Pending) (https://www.google.com/patents/WO2013078219A1)

11. “Pretreatment method for reduction and/or elimination of basal plane dislocations close to epilayer/substrate interface in growth of SiC epitaxial films”, Tangali S. Sudarshan, Haizheng Song, Tawhid Rana, U.S. patent, Publication No. US 20130143396 A1, Publication Date: June 6, 2013. (Pending) (https://www.google.com/patents/US20130143396A1)

10. “Methods, Wires, and Apparatus for Slicing Hard Materials”, Tangali Sudarshan, Igor Agafonov, Robert Kennedy, U.S. Patent, US8291895 B2, Issued: Oct. 23, 2012. (https://www.google.com/patents/US8291895)

9. “System and method for detecting defects in semiconductor wafers,” Xianyun Ma, Tangali S. Sudarshan, U.S. Patent, US7220978 B2, Issued: May 22, 2007. (https://www.google.com/patents/US7220978)

8. “Method for Elimination of Basal Plane Dislocation and In-Grown Stacking Fault with No Surface Degradation for High Quality SiC Epitaxial Films”, Tangali S. Sudarshan, Haizheng Song, US Provisional Patent, Filing Date: October 19, 2012, Application No. 61/716,020.

7. “Method of eliminating silicon gas phase nucleation for high quality homoepitaxy”, T. S. Sudarshan, T. Rana, US Provisional Patent, Filing Date: April 26, 2012, Application No. 61/638,770.

6. “Substrate Pretreatment Method for Reduction/Elimination of Basal Plane Dislocations and In-Grown Stacking Faults with No Surface Degradation for High Quality SiC Epitaxial Films”, Tangali S. Sudarshan, Haizheng Song, US Provisional Patent, Filing Date: November 23, 2011, Application No. 61/563,250.

5. “Diffused junction termination structures for silicon carbide devices and methods of fabricating silicon carbide devices incorporating same”, Qingchun Zhang, Anant K. Agarwal, Tangali S. Sudarshan, Alexander Bolotnikov, U.S. Patent, US8637386 B2, Issued: Jan 28, 2014. (https://www.google.com/patents/US8637386)

4. “Silicon Carbide and Related Wide Bandgap Semiconductor Based Optically-Controlled Power Switching Devices”, Feng Zhao, Tangali S. Sudarshan, U.S. Patent, US20100276699 A1, Publication date: Nov 4, 2010.

http://www.google.com/patents/US8574528

https://www.google.com/patents/WO2013078219A1

https://www.google.com/patents/US20130143396A1

https://www.google.com/patents/US8291895




(Pending) (https://www.google.com/patents/US20100276699) 3. U. S. Patent Application, “Novel JTE Formation Technique for Use in Silicon Carbide Power Devices, T. S.

Sudarshan, A. Bolotnikov, Q. Zhang, and A. Agarwal. Submitted for filing by Cree, Inc., December 2009. 2. “System and Method for Fabricating Diodes”, Tangali S. Sudarshan, Stanislav Soloviev, Ying Gao, U.S.

Patent, No. US7061021 B2, Issued: June 13, 2006. (https://www.google.com/patents/US7061021) 1. “Method of wetting metals”, Tangali S. Sudarshan, Larry Park, Meng H. Lim, James E. Thompson, U.S.

Patent No. US4780176 A, Issued: October 25, 1988. (https://www.google.com/patents/US4780176) DISCLOSURES TO USC INTELLECTUAL PROPERTY OFFICE 1. "A Novel Method of Rapid Epitaxial Growth of Silicon Carbide (SiC) that Heals Micropipes in Commercial

SiC Substrates," T.S. Sudarshan, Y. Khlebnikov, and I. Khlebnikov, disclosure #98171, Jan. 14, 1998. 2. "Local Epitaxy, Diffusion, and Etching Related to Silicon Carbide and Other Wide Bandgap Semiconductors,"

T.S. Sudarshan, Y. Khlebnikov, and I. Khlebnikov, disclosure #98174, May 1, 1998. 3. "Bulk Silicon Carbide Crystal Growth by a Modified Vapor Transport Technique," T.S. Sudarshan, Y.

Khlebnikov, and I. Khlebnikov, disclosure #98175, May 1, 1998. 4. "An Electrochemical Polishing Technique for the Surface Preparation of SiC," T.S. Sudarshan, Y. Khlebnikov,

and I. Khlebnikov, disclosure #99207, Dec. 1998. 5. "High Power Large Area Schottky Diode," Q. Zhang, T.S. Sudarshan, and V. Madangarli, disclosure #99204,

April 26, 1999. 6. "Thick Oxide Film Deposition on Silicon Carbide," T.S. Sudarshan, Q. Zhang, and I. Khlebnikov, disclosure

#99205, April 26, 1999. 7. "Rapid Anodic Oxidation of Silicon Carbide," T.S. Sudarshan, Y. Khlebnikov, and I. Khlebnikov, disclosure

#99206, April 26, 1999. 8. "A Novel Base Design for High Power Transistors, Thyristors, and Other Devices," Q. Zhang and T.S.

Sudarshan, disclosure #99230, Jan. 2000. 9. "Silicon Carbide Wafer Design for High Power Device Fabrication," Q. Zhang and T.S. Sudarshan, disclosure

#99208, May, 1999. 10. "A Technique to Eliminate Premature Breakdown at the Edge of Thin Film Electrodes," X. Ma and T.S.

Sudarshan, disclosure #20239, Jan. 2000. 11. "A Technique for Alleviating Spacer Triple Junction-Initiated Breakdown," X. Ma and T.S. Sudarshan,

disclosure #20250, May 2000. 12. "A Novel Schottky Diode Structure with Low On-State Resistance," Q. Zhang and T.S. Sudarshan, June 27,

2001. 13. "A Novel JFET Structure for High Power, High Frequency Applications," Q. Zhang and T.S. Sudarshan, June

27, 2001. 14. “Novel Schottky Diode Structure for High Power Applications,” Q. Zhang and T.S. Sudarshan, Oct. 2001. 15. “Nondestructive Defect Delineation in SiC Wafers Using the Optical Stress Technique,” X. Ma and T.S. Sudarshan,

#00367, April 2002. 16. “Development of Interfaces to Facilitate the Implantation of Biosensor Based Deveices,” N. Sethuraman and

T.S. Sudarshan, Dec. 2002. 17. “A Method of Eliminating Forward Voltage Drift in SiC PiN and PN Diodes,” S. Soloviev, Y. Gao, and T.S.

Sudarshan, March 2003. 18. “New Biomaterial for Bone Implant Applications,” N. Sethuraman, T.S. Sudarshan, and J. Morris, Sep. 2003. 19. “Abrasive Wire Used for Slicing Semiconductor Boules”, T.S.Sudarshan, I.Agafanov, Y.Khlebnikov and

M.Parker USCRF 446, June 2004. 20. “Method and Apparatus for Slicing Hard Brittle Materials”, T.S.Sudarshan and I.Agafanov, USCRF Ref 465,

Provisional Patent – 2/11/2005.





21. “Epitaxial Growth of Basal Plane Dislocations-Free Silicon Carbide Films”, T.S.Sudarshan and Z.Zhang, USCRF Ref 464, Provisional Patent – 11/17/04.

22. “Growth of Low Basal Plane Dislocation Epilayers of SiC with Minimized Surface Depressions”, T.S.Sudarshan, Z.Zhang, USCRF Ref 540, Nov 2005.

23. “Mask Design for Low Defect Density Lateral Epitaxially Overgrown SiC Films”, T.S.Sudarshan, A.Bolotnikov and S.Soloviev(GE), Jan 2006.

24. "Novel Method of Forming Junction Termination Extension for SiC Power Devices," T. S. Sudarshan and A. Bolotnikov, USCRF #000619, 10/20/2006.

25. “A method to increase and control carrier lifetime in SiC Epilayers,” T. S. Sudarshan and Amitesh Shrivastava, disclosed and submitted to Intellectual Property Office, USC, October 3, 2007.

26. “Silicon Carbide and Related Wide Bandgap Semiconductor Based Optically-Controlled Power Switching Devices,” Feng Zhao and Tangali S. Sudarshan, disclosed and submitted to USC Intellectual Property Office, January 20, 2009.

27. “Silicon Carbide and Related Wide Bandgap Semiconductor Based Optically-Controlled Power Switching Devices”, T. Sudarshan and F. Zhao., Application Serial No. 12/773,369.

BOOK CHAPTERS

5. S. I. Soloviev and T. S. Sudarshan, “Processing Porous SiC: Diffusion, Oxidation, Contact Formation,” Pourous Silicon Carbide and Gallium Nitride: Epitaxy, Catalysts, and Biotechnology Applications, edited by R. M. Feenstra and C.E.C. Wood, John Wiley & Sons, Ltd., 2008.

4. T.S. Sudarshan, D. Cherednichenko, and R. Yakimova, “Growth of Silicon Carbide,” in: Bulk Crystal Growth of Electronic, Optical and Optoelectronic Materials, ed. Dr. P. Capper, Wiley and Sons, invited chapter, pp. 433-449, 2004.

3. T.S. Sudarshan, “Materials Science and Engineering of Bulk Silicon Carbides” in: SiC Power Materials, ed. Dr. Z.C. Feng, Springer-Verlag invited chapter, pp. 1-61, 2004.

2. Khlebnikov, D. Cherednichenko, Y. Khlebnikov, and T.S. Sudarshan, “Silicon Carbide Technology: Status and Future,” International School on Crystal Growth of Technologically Important Electronic Materials (ISCGTIEM), Mysore, India January 2003.

1. T.S. Sudarshan, "Vacuum Insulation," Wiley Encyclopedia of Electrical and Electronic Engineering, invited chapter, 1999.

RESEARCH PUBLICATIONS A.1. ARCHIVAL REVIEWED PUBLICATIONS – Recent Publications 2004-2014

2014 227. “Large Barrier, Highly Uniform and Reproducible Ni-Si/4H-SiC Forward Schottky Diode Characteristics:

Testing the Limits of Tung’s Model”, Sabih U. Omar, Tangali S. Sudarshan, Tawhid A. Rana, Haizheng Song, M.V.S. Chandrashekhar, Journal of Physics D: Applied Physics, in press (2014)

226. “Nanoparticle functionalized graphene/Si schottky diode for hydrogen sensing,” Muhammad Ahsan Uddin, Amol Kumar Singh, Tangali S. Sudarshan and Goutam Koley, Nanotechnology 25, 125501 (2014).

225. “Tunable reverse-biased graphene/Si heterojunction Schottky diode sensor,” Amol Kumar Singh, Muhammad Ahsan Uddin, Tangali S. Sudarshan and Goutam Koley, Small 10, 1555 (2014).


2013 224. “Si-adatom kinetics in defect mediated growth of multilayer epitaxial graphene films on 6H-SiC”, Shamaita

Shetu, Sabih. U. Omar, K.M. Daniels, Joseph Andrews, B.K. Daas, T.S. Sudarshan, MVS Chandrashekhar, J. Appl. Phys., 114, 164903 (2013).

223. “Electrically tunable molecular doping of Graphene,” A. K. Singh, M. A. Uddin, J. T. Tolson, H. Maire-Afeli, N. Sbrockey, G. S. Tompa, M. G. Spencer, T. Vogt, T. S. Sudarshan and G. Koley, Applied Physics Letters 102, 043101 (2013).

222. “Nucleation of In-grown Stacking Faults and Dislocation Half-loops in 4H-SiC Epitaxy”, M. Abadier, R. L. Myers-Ward, N. A. Mahadik, R. E. Stahlbush, V. D. Wheeler, L. O. Nyakiti, C. R. Eddy, Jr., D. K. Gaskill, H. Song, T. S. Sudarshan, Y. N. Picard, M. Skowronski, J. Appl. Phys. 114, 123502 (2013).

221. “Comparison of SiC Epitaxial Growth from Dichlorosilane and Tetrafluorosilane Precursors”, Haizheng Song, Tawhid Rana, M.V.S. Chandrashekhar, Sabih U. Omar, Tangali S. Sudarshan, ECS Transactions 58 (2013) 97-109.

220. “Trade-Off between Parasitic Deposition and SiC Homoepitaxial Growth Rate Using Halogenated Si-Precursors”, Tangali S. Sudarshan, Tawhid Rana, Haizheng Song, M.V.S. Chandrashekhar, ECS Journal of Solid State Science and Technology, 2 (2013) N3079-N3086. (invited)

219. “Vapor phase surface preparation (etching) of 4H-SiC substrates using tetrafluorosilane (SiF4) in a hydrogen ambient for SiC epitaxy”, T. Rana, M.V.S. Chandrashekhar, Tangali S. Sudarshan, Journal of Crystal Growth, 380 (2013) 61-67.

218. “Step dynamics in the homoepitaxial growth of 6H-SiC by chemical vapor deposition on 1o offcut substrate using dichlorosilane as Si precursor”, Sabih U. Omar, M. V. S. Chandrashekhar, Iftekhar A. Chowdhury, Tawhid A. Rana, Tangali S. Sudarshan, Journal of Applied Physics, 113, 184904 (2013).

217. “Basal Plane Dislocation Conversion Near the Epilayer/substrate Interference in Epitaxial growth of 4 deg off-axis 4H-SiC”, Haizheng Song, Tangali S Sudarshan, Journal of Crystal Growth, 371 (2013) 94-101.

216. “Electrically Tunable Molecular Doping of Graphene”, A. K. Singh, M. A. Uddin, J. T. Tolson, H. Maire-Afeli, N. Sbrockey, G. S. Tompa, M. G. Spencer, T. Vogt, T. S. Sudarshan, and G. Koley, Applied Physics Letters, 102, 043101, (2013).

2012 215. “Elimination of silicon gas phase nucleation using silicon tetrafluoride (SiF4) precursor for high quality thick

silicon carbide (SiC) homoepitaxy” Tawhid Rana, M.V.S, Chandrashekhar, T.S. Sudarshan, Phys. Status Solidi A, Volume 209, Issue 12, pages 2455–2462, December 2012.

214. “Comparison of Epitaxial Graphene Growth on Polar and Nonpolar 6H-SiC Faces: On the Growth of Multilayer Films”, Daas, B. K. Omar, Sabih U. Shetu, S. Daniels, Kevin M. Ma, S. Sudarshan, T. S. Chandrashekhar, M. V. S., Crystal Growth & Design, Volume: 12 Issue: 7 Pages: 3379-3387 Jul 2012.

213. “Evidences of electrochemical graphene functionalization and substrate dependence by Raman and scanning tunneling spectroscopies”, Kevin M. Daniels, B. K. Daas, N. Srivastava, C. Williams, R. M. Feenstra, T.S. Sudarshan, M.V.S Chandrashekhar, J. Appl. Phys., 111, 114306, Jun 2012.

212. “Basal plane dislocation mitigation in SiC epitaxial growth by non-destructive substrate treatment”, Haizheng Song, Tangali S. Sudarshan, Crystal Growth & Design, 12, 1703-1707, Apr. 2012.

211. “High Purity Semi-Insulating 4H-SiC Epitaxial Layers by Defect-Competition Epitaxy: Controlling Si


Vacancies”, M. V. S. Chandrashekhar, Iftekhar Chowdhury, Pavel Kaminski1, Roman Kozlowski1, P. B. Klein, and Tangali Sudarshan, Appl. Phys. Express 5, 025502, Feb. 2012.

210. “Comparison of 4H silicon carbide epitaxial growths at various growth pressures using dicholorosilane and silane gases”, Tawhid Rana, Haizheng Song, M.V.S. Chandrashekhar, and Tangali Sudarshan, Materials Science Forum, 717-720, p. 117-120, May 2012.

209. “In-Grown Stacking Faults in SiC-CVD Using Dichlorosilane and Propane as Precursors”, Haizheng Song, Sabih U. Omar, Tawhid Rana, M.V.S. Chandrashekhar, Tangali S. Sudarshan, Materials Science Forum 717-720, p. 121-124, May 2012.

208. “Investigation of Basal Plane Dislocation Reduction/Elimination by Molten KOH-NaOH Eutectic Etching Method”, Haizheng Song, Tangali S. Sudarshan, Materials Science Forum 717-720, p. 125-128, May 2012.

207. “Behavior of particles in the growth reactor and their effect on silicon carbide epitaxial growth”, Tawhid Rana, Haizheng Song, M.V.S. Chandrashekhar and Tangali Sudarshan, Materials Science Forum, 717-720, p. 153-156, May 2012.

206. “Room Temperature Photoluminescence from 4H-SiC Epilayers: Non-Destructive Estimation of In-Grown Stacking Fault Density”, Sabih U Omar, Haizheng Song, Tangali S Sudarshan, MVS Chandrashekhar, Materials Science Forum 717-720, p. 399-402, May 2012.

205. “Evidence of Electrochemical Graphene Functionalization by Raman Spectroscopy”, Kevin M. Daniels, B. K. Daas, N. Srivastava, C. Williams, R. M. Feenstra, T.S. Sudarshan, MVS Chandrashekhar, Materials Science Forum 717-720, p. 661-664, May 2012.

204. “Molecular Gas Adsorption Induced Carrier Transport Studies of Epitaxial Graphene using IR Reflection Spectroscopy”, B.K. Daas, W.K. Nomani, K.Daniels, T.S. Sudarshan, G. Koley, MVS Chandrashekhar, Materials Science Forum 717-720, p. 665-668, May 2012.

203. “Study of epitaxial graphene on non-polar 6H-SiC faces”, B.K. Daas, K.Daniels, S.Shetu, T.S. Sudarshan, MVS Chandrashekhar, Materials Science Forum 717-720, p. 633-636, May 2012.

2011 202. “Polariton enhanced infrared reflection of epitaxial graphene”, B.K. Daas, K. M. Daniels, T.S. Sudarshan and

M.V.S. Chandrashekhar, Journal of Appl. Phys. Volume: 110 Issue: 11, 113114, Dec. 2011.

201. “Slow de-trapping of minority holes in n-type 4H-SiC epilayers”, by P. B. Klein, A. Shrivastava, and T. S. Sudarshan, Physica Status Solidi A, Volume: 208 Issue: 12 Pages: 2790-2795, Dec 2011.

200. “Layered GaTe Crystals for Radiation Detectors”, Krishna C. Mandal, Ramesh M. Krishna, Timothy C. Hayes, Peter G. Muzykov, Sandip Das, Tangali S. Sudarshan, Shuguo Ma, IEEE Transactions on Nuclear Science, Volume: 58 Issue: 4 Pages: 1981-1986, Aug 2011.

199. “Mater. Res. Socharacterization of Semi-Insulating 4H Silicon Carbide for Radiation Detectors”, Krishna C. Mandal, Ramesh M. Krishna, Peter G. Muzykov, Sandip Das, Tangali S. Sudarshan, IEEE Transactions on Nuclear Science, Volume: 58 Issue: 4 Pages: 1992-1999, Aug 2011.

198. “Investigations of defect evolution and basal plane dislocation elimination in CVD epitaxial growth of silicon carbide on eutectic etched epilayers,” Haizheng Song, Tawhid Rana, and Tangali S. Sudarshan, Journal of Crystal Growth, Volume: 320, Issue 1, p. 95-102, April 2011.

197. “Thermally stimulated current and high temperature resistivity measurements of 4H semi-insulating silicon carbide”, Krishna C. Mandal, Peter G. Muzykov, Ramesh Krishna, Timothy Hayes, Tangali S. Sudarshan,


Solid State Communications, Volume: 151 Issue: 7 Pages: 532-535, Apr 2011.

196. “Characterization of 4H semi-insulating silicon carbide single crystals using electron beam induced current”, Peter G. Muzykov, Ramesh Krishna, Sandip Das, Timothy Hayes, Tangali S. Sudarshan, Krishna C. Mandal, Materials Letters, Volume: 65 Issue: 5 Pages: 911-914 Mar 2011.

195. “High growth rate 4H-SiC epitaxial growth using dichlorosilane in a hot-wall CVD reactor,” Iftekhar Chowdhury, MVS Chandrashekar, Paul B. Klein, Joshua D. Caldwell, Tangali Sudarshan, Journal of Crystal Growth, Volume 316, Issue 1, pages 60-66, February 2011.

194. “Doping Dependence of Thermal Oxidation on n-type 4H-SiC”, B. K. Daas, M. M. Islam, I. A. Chowdhury, F. Zhao, T. S. Sudarshan, M.V.S. Chandrashekhar, IEEE Transactions on Electron Devices, Vol. 58, Issue 1, pp. 115-121, Jan. 2011.

2010 193. “Junction Termination Extension Implementing Drive-in Diffusion of Boron for High-Voltage SiC Devices”,

A. V. Bolotnikov, P. G. Muzykov, Q. Zhang, A. K. Agarwal, T. S . Sudarshan, IEEE Transactions on Electron Devices, Volume: 57 Issue: 8 Pages: 1930-1935 Aug 2010.

192. “Recombination processes controlling the carrier lifetime in n-4H-SiC epilayers with low Z1/2 concentrations,” P. B. Klein, R. Myers-Ward, K.-K. Lew, B. L. VanMil, C. R. Eddy, Jr., D. K. Gaskill, A. Shrivastava, T. S. Sudarshan, Journal of Applied Physics, 108, 0333713, August, 2010.

191. “Effect of threading screw and edge dislocations on transport properties of 4H-SiC homoepitaxial layers,” by S. I. Maximenko, J. A. Freitas, Jr., R. L. Myers-Ward, K. K. Lew, B. L. VanMil, C. R. Eddy, Jr., D. K. Gaskill, P. G. Muzykov, and T. S. Sudarshan, Journal of Applied Physics, 108, 013708, July 2010.

190. “Effect of crystallographic dislocations on the reverse performance of 4H-SiC p-n diodes,” by Feng Zhao, Mohammad M. Islam, Biplob K. Daas, Tangali S. Sudarshan, Materials Letters, Vol. 64, pp. 281-283. February 2010.

2009 189. “Optically Activated 4H-SiC p-i-n Diodes for High-Power Applications,” by Feng Zhao, Mohammad M.

Islam, Peter Muzykov, Alex Bolotnikov, and Tangali S. Sudarshan, IEEE Electron Device Letters, Vol. 30, No. 11, 1182 – 1184, November 2009.

188. “Bulk SiC Crystal Growth at Constant Growth Rate Utilizing a New Design of Resistive Furnace,” by Eugene Tupitsyn, Alexander Galyukov, Maxim Bogdanov, Alexey Kulik, Mark Ramm, Yuri Makarov, Tangali Sudarshan, Materials Science Forum, Vols. 600-603, pp. 27-30, 2009.

187. “Cathodoluminescence Study of the Properties of Stacking Faults in 4H-SiC Homoepitaxial Layers,” by Serguei I. Maximenko, Jaime A. Freitas, Jr., Paul B. Klein, Amitesh Shrivastava, and Tangali S. Sudarshan, Applied Physics Letters, 94, 092101, March 2009.

186. “Two-Branch Boron Diffusion from Gas Phase in n-Type 4H-SiC,” by A. V. Bolotnikov, P. G. Muzykov, Anant Agarwal, Qing Chun Zhang, and Tangali S. Sudarshan, Silicon Carbide and Related Materials 2008, Materials Science Forum, Vols. 614-617, pp. 453-456, March 2009.

185. “Study of Leakage Current and Breakdown Issues in 4H-SiC Unterminated Schottky Diodes,“ by P. G. Muzykov, A. V. Bolotnikov, and T. S. Sudarshan, Solid State Electronics, Vol. 53, Issue 1, pp. 14-17, January 2009.

184. “Long Carrier Lifetime in 4H-SiC Epilayers Using Chlorinated Precursors”, by A. Shrivastava, P. B. Klein,


E.R. Glaser, J. D. Caldwell, A.V. Bolotnikov, T. S. Sudarshan, Materials Science Forum, Vols. 615-617, pp. 291-294, 2009.

183. “Inverted Pyramid Defects in 4H-SiC Epilayers”, by A. Shrivastava, P. Muzykov, T. S. Sudarshan, Materials Science Forum, Vols. 615-617, pp. 125-128, 2009.

182. “Investigation of Triangular Defects on 4H-SiC 4º off cut (0001) Si Face Epilayers Grown by CVD”, by A. Shrivastava, P. Muzykov, B. Pearmen, S. Michael Angel, and T. S. Sudarshan, Materials Science Forum, Vols. 600-603, pp. 139-142, 2009.

181. “Variations in the measured carrier lifetimes of N- 4H-SiC epilayers,” by P. B. Klein, J. D. Caldwell, Amitesh Shrivastava, and T. S. Sudarshan, Materials Science Forum, Vols. 600-603, pp. 489-492, 2009.

180. “Physical Phenomena Affecting Performance and Reliability of 4H-SiC Bipolar Junction Transistors, “ by Peter G. Muzykov, Robert M. Kennedy, Qingchun (Jon) Zhang, Craig Capell, Al Burk, Anant Agarwal, Tangali S. Sudarshan, Microelectronics Reliability, Vol. 49, Issue 1, pp. 32-37, January 2009.

2008 179. “Identification of nucleation sites and formation mechanism of inverted pyramids in 4H-SiC epilayers”, by A.

Shrivastava, P. Muzykov, and T. S. Sudarshan, Journal of Applied Physics, 104, 003532, November 2008.

178. “Study of Triangular Defects and Inverted pyramids in 4H-SiC 4° off cut (0001) Si face epilayers,” by A. Shrivastava, P. Muzykov, J. D. Caldwell, and T.S. Sudarshan, Journal of Crystal Growth, Vol. 310, Issue 20, pp. 4443-4450, October 2008.

177. “Effect of crystallographic defects on the reverse performance of 4H-SiC JBS Diodes”, A. Grekov, Qingchun Zhang, Husna Fatima, Anant Agarwal and T. Sudarshan, Microelectronics Reliability, Vol. 48, Issue 10, pp. 1664-1668, October 2008.

176. “Structural and Chemical Comparison of Graphite and BN/AlN Caps Used for Annealing Ion Implanted SiC,” by K.A. Jones, M.C. Wood, T.S. Zheleva, K.W. Kirchner, M.A. Derenge, A. Bolotnikov, T.S. Sudarshan, R.D. Vispute, S.S. Hullavarad, and S. Dhar, Journal of Electronic Materials, Vol 37, No. 6, June 2008. Also published online at SpringerLink, March 11, 2008, http://www.springerlink.com/content/125244w14jw71721

175. “Investigation of two-branch boron diffusion from vapor phase in n-type 4H-SiC,” by A. V. Bolotnikov, P. G. Muzykov, and T.S. Sudarshan, Applied Physics Letters, 93, 052101, August 2008.

2007 174. “Characteristics of Dislocation Half-Loop Arrays in 4H-SiC Homo-Epilayer,” by Z. Zhang, R. E. Stahlbush, P.

Pirouz, and T. S. Sudarshan, Journal of Electronic Materials, Vol. 36, No. 5, May, 2007.

173. “Polytype Stability and Microstructural Characterization of Silicon Carbide Epitaxial Films Grown on [1120]- and [0001]-Oriented Silicon Carbide Substrates,” S. M. Bishop, C. L. Reynolds Jr., Z Liliental-Weber, Y. Uprety, J. Zhu, D. Wang, M. Park, J. C. Molstad, D. E. Barnhardt, A Shrivastava, T. S. Sudarshan, and R. F. Davis, Journal of Electronic Materials, Vol 36, No. 4, pp. 285-296, March, 2007.

172. “Improvement of 4H-SiC Power p-i-n Diode Switching Performance Through Local Lifetime Control Using Boron Diffusion,” Alexander Bolotnikov, Peter Muzykov, Alexander Grekov, and T. S. Sudarshan, IEEE Transactions on Electron Devices, Vol. 54, No. 6, pp. 1540-1544, June 2007.

171. “Comparison of Graphite and BN/AIN Annealing Caps for Ion Implanted SiC,” K. A. Jones, M. C. Wood, T. S. Zheleva, K. W. Kirchner, M. A. Derenge, A. Bolonikov, T. S. Sudarshan, R. D. Vispute, S. S. Hullavarad, and S. Dhar, Materials Science Form, Vol. 556-557, pp. 575-578, September 2007.

http://www.springerlink.com/content/125244w14jw71721


170. “Inhomogeneities in Ni/4H-SiC Schottky barriers: Localized Fermi-level pinning by defect states,” D. J.

Ewing, L. M. Porter, Q. Wahab, X. Ma, T. S. Sudarshan, S. Tumakha, M. Gao, and L. J. Brillson, Journal of Applied Physics,. 101, 114514, June, 2007.

169. “Free carrier distribution profiling of 4H-SiC substrates using a commercial optical scanner, “ Joshua D. Caldwell, Orest J. Glembocki, Sharka M. Prokes, Evan R. Glaser, Karl D. Hobart, Darren M. Hansen, Gilyong Chung, Alexander V. Bolotnikov, and Tangali S. Sudarshan, Journal of Applied Physics, 101, 093506, May, 2007.

168. “Controllable 6H-SiC to 4H-SiC polytype transformation during PVT growth,” E. Y. Tupitsyn, A. Arulchakkaravarthi, R. V. Drachev, and T. S. Sudarshan, Journal of Crystal Growth, Vol. 299, Issue 1, pp. 70-76, Feb, 2007.

2006 167. "Analysis of Nonexponential Deep-Level Current Transients in Schottky Diodes Fabricated in [1100] 6H-

SiC," A. Bolotnikov, P. Muzykov, and T. S. Sudarshan, J. Elec. Mats., Vol. 35, No. 5, 1122-1126, May 2006.

166. "Mechanism of Eliminating Basal Plane Dislocations in SiC Thin Films by Epitaxy on an Etched Substrate," Z. Zhang, E. Moulton, and T. S. Sudarshan, Appl. Phys. Lett. Vol. 89, 081910, August 2006.

165. “Propagation of Stacking Faults from Surface Damage in SiC PiN Diodes”, with Z. Zhang, S. I. Maximenko, A. Shrivastava, P. Sadagopan, Y Gao, and T. S. Sudarshan, Appl. Phys. Lett., Vol. 88, 062101, February 2006.

164. “Bulk Growth of Single Crystal Silicon Carbide” Microelectronic Engineering, T. S. Sudarshan and S. I. Maximenko, Microelectronic Engineering, Vol. 83, No. 1, pp. 155-159, January 2006.

163. “Investigation on Barrier Inhomogeneities in 4H-SiC Schottky Rectifiers,” Xianyun Ma, Priyamvada Sadagopan, and Tangali S. Sudarshan, Phys. Stat. Sol. (a), Vol. 203, No. 3, pp. 643-650, February, 2006.

162. “Nanoscale Deep Level Defect Correlation with Schottky Barriers in 4H-SiC/Metal Diodes,” S. Tumakha, L. M. Porter, D.J. Ewing, Q. Wahab, X.Y. Ma, L. J. Brillson, and T. S. Sudarshan, Materials Science Forum, Vols. 527-529, pp. 907-910, 2006.

161. “Fundamental Limitations of SiC PVT Growth Reactors with Cylindrical Heaters,” R. Drachev, E. Deyneka, C. Rhodes, J. Schupp, and T. Sudarshan, Invited, Materials Science Forum, Vols. 527-529, pp. 15-20, 2006.

160. “Stability of Thick Layers Grown on (1-100) and (11-20) Orientations of 4H-SiC,” with M. Syvajarvi, R. Yakimova, G. R. Yazdi, A. Arjunan, E. Toupitsyn, and T. S. Sudarshan, Materials Science Forum, Vols. 527-529, pp.227-230, October 2006.

159. “Effect of Crystal Defects on Reverse I-V Characteristics of 4H-SiC APD,” S. Soloviev, P. Sandvik, S. Arthur, K. Matocha, S. Maximenko, and T. S. Sudarshan, Materials Science Forum, Vols. 527-529, pp. 427-430, October 2006.

158. “Recombination Behavior of Stacking Faults in SiC p-i-n Diodes” S. Maximenko, P. Pirouz, and T. S. Sudarshan, Materials Science Forum, Vols. 527-529, pp. 367-370, 2006.

157. ”Open Core Dislocations and Surface Energy of SiC” with S. Maximenko and P. Pirouz, Materials Science Forum, Vols. 527-529, pp. 439-442, 2006

156. “A Study of Inhomogeneous Schottky Diodes on n-type 4H-SiC” with D. J. Ewing, L. M. Porter, Q. Wahab, S. Tumakha, L. J Brillson, X. Y. Ma, and T. S. Sudarshan, Materials Science Forum, Vols. 527-529, pp. 911-914, 2006.


155. “Growth of Low Basal Plane Dislocation Density SiC Epilayers”, Z. Zhang and T. S. Sudarshan, Materials

Science Forum, Vols. 527-529, pp. 243-246, 2006.

154. “Why Are Only Some Basal Plane Dislocations Converted to Threading Edge Dislocations during SiC Epitaxy?” Z. Zhang, A. Shrivastava, Materials Science Forum, Vols. 527-529, pp. 419-422, 2006.

153. “Performance of SiC PiN Diodes Fabricated on Basal Plane Dislocation-free SiC Epilayers”, with Z. Zhang, A. Grekov, P. Sadagopan, S. Maximenko, and T. Sudarshan, Materials Science Forum, Vols. 527-529, pp. 371-374, 2006.

2005 152. “Investigation on Small Growth Pits in 4H Silicon Carbide Epilayers,” X. Ma, H. Chang, Q. Zhang, and T.

Sudarshan, J. Crystal Growth 279, 425-432, 2005.

151. “A Nondestructive Automated Defect Detection System for Silicon Carbide Wafers” with Toshiro Kubota, Parag Talekar, Xianyun Ma, and Tangali S. Sudarshan, Machine Vision and Applications, Vol. 16, pp. 170-176, April 2005.

150. “CVD Growth and Characterization of 4H-SiC Epitaxial Film on (11-20) As-cut Substrates,” Ze Hong Zhang, Ying Gao, Arul Arjunan, Eugene Toupitsyn, Priyamvada Sadagopan, and Robert M. Kennedy, and Tangali S. Sudarshan, Mater. Sci. Forum, 483-485, 113, 2005.

149. “Defect-driven Inhomogeneities in Ni/4H-SiC Schottky Barriers”, with S. Turnakha;, D. J. Ewing and L.M. Porter, Q. Wahab, X. Ma, and L. J. Brillson, Appl. Phys. Lett., 87, 242106, 2005.

148. “Basal Plane Dislocation-free Epitaxy of Silicon Carbide,” Z. Zhang, Appl. Phys. Lett., 87, 151903, October 2005.

147. “Evolution of Basal Plane Dislocations during 4H-Silicon Carbide Homo-epitaxy”, Z. Zhang and T. S. Sudarshan, Appl. Phys. Lett., 87, 161917, October 2005.

146. “Investigation of the Electrical Activity of Partial Dislocations in SiC p-i-n Diodes” with Serguei I. Maximenko, Pirouz Pirouz, and Tangali S. Sudarshan, Applied Physics Letters, 87, 033503, July 2005.

145. “Effect of Basal Plane Dislocations on Characteristics of Diffused 4H-SiC P-i-N Diodes,” A. Grekov, S. Maximenko, and T. S. Sudarshan, IEEE Trans. on Electron Devices, Vol.52, No 12, pp. 2546-2551, December, 2005.

144. “Stacking Fault Nucleation Sites in Diffused SiC PIN Diodes,” S. I. Maximenko and T. S. Sudarshan, Journal of Applied Physics, 97, 074501, March 2005.

143. “Observation of Dislocations in Diffused 4H- SiC p-i-n Diodes by Electron-Beam Induced Current ,” S. Maximenko, S. Soloviev, D. Cherednichenko, and T. Sudarshan, J. Applied Physics, 97, 013533, Jan. 2005.

142. “Micro/Nanoscale Mechanical and Tribological Characterization of SiC for Orthopedic Applications,” Xiaodong Li, XinnanWang, Robert Bondokov, Julie Morris, An Yuehei H. and Tangali S. Sudarshan, Journal of Biomedical Materials Research: Part B - Applied Biomaterials, 72B(2), pp. 353-361, Feb. 2005.

141. “A Study of 6H-seeded 4H-SiC Bulk Growth by PVT,” with Eugene Y. Toupitsyn, Arulchakkaravarthi Arjunan, Robert T. Bondokov, Robert M. Kennedy, and Tangali S. Sudarshan,” Mat. Sci. For. Vol. 483-485, pp. 21-24, 2005.

140. "CVD Growth and Characterization of 4H-SiC Epitaxial Film on (000-2) As-Cut Substrates,” Zehong Zhang, Ying Gao, Priyamvada Sadagopan, Robert M. Kennedy, and Tangali S. Sudarshan, Mat. Sci. For. 483-485: 113-116, 2005.

139. “Surface Preparation of 6H-SiC Substrates by Electron Beam Annealing,” O.A. Agueev, S. P. Avdeev, A. M. Svetlichnyi, R. V. Konakova, V. V. Milenin, P. M. Lytvyn, O. S. Lytvyn, O. B. Okhrimenko, S. I.


Soloviev, and T. S. Sudarshan, Mat. Sci. For,. Vol. 483-485, pp. 725-728, 2005.

138. “Study of Forward Voltage Drift in Diffused SiC PIN Diodes Doped by Al or B,” with Maximenko, Grekov, and Bolotnikov, Mat. Sci. For. 483-485: 989-992, 2005.

2004 137. “The Effect of Doping Concentration and Conductivity Type on Preferential Etching of 4H-SiC by Molten

KOH” with Gao, Zhang, Bondokov and Soloviev, Mat. Res. Soc. Symp. Proc., 815, J5.20.1, 2004.

136. “Characterization of Defects Generated during Boron Diffusion in SiC,’” with Lin, Smith, Ma, and Wang, Mat. Res. Soc., Symp. Proc., 815, J5.26.1, 2004.

135. "Delineating Structural Defects in Highly Doped n-type 4H-SiC Substrates Using a Combination of Thermal Diffusion and Molten KOH Etching" with Z. Zhang and Y. Gao, Electrochemical and Solid State Letters, 7(11): 2004.

134. “Analysis of In-Situ Off-Axis Seeding Surface Preparation Conditions for SiC PVT Growth,” with R.V. Drachev, and D.I. Cherednichenko. Journal of Crystal Growth. 265: 179-183, 2004.

133. “Electron Beam Induced Current Observation of Dislocations in Diffused 4H-SiC P-N Diodes,” with S. Maximenko, S. Soloviev, and D. Cherednichenko. Applied Physics Letters, 84(9): 1576, 2004.

132. “Nondestructive Defect Characterization of SiC Substrates and Epilayers,” with X. Ma. Journal of Electronic Materials, 33(5): 2004.

131. “Forward Voltage Drop Degradation in Diffused SiC PIN Diodes,” with S. Soloviev, D. Cherednichenko, Y. Gao, A. Grekov, and Y. Ma. J. Applied Physics, 95(8): 4376-4380, April 2004.

130. “Clustering Effects on Discontinuous Gold Film Nanocells,” with Seminario, Ma, et al., J. Nanosci. Nanoatech, vol. 4, No. 7, 1-11, 2004.

129. “Influence of Structural Defects on the Polishing of Silicon Carbide Single Crystal Wafers,” with R. Bondokov and T. Lashkov. Japanese Journal of Applied Physics, 43(1): 43-49, 2004.

128. “Self-Congruent Process of SiC Growth by Physical Vapor Transport,” with D.I. Cherednichenko and R.V. Drachev. J. Crystal Growth, 262(1-4): 175-181, 2004.

127. “Developments of Patterns for Nanoscale Strain Measurements: I. Fabrication of Imprinted Au Webs for Polymeric Materials,” with S. A. Collette, M. I. Myrick, et al., Nanotechnology, 15, pp. 1812-17, 2004.

A.2. ARCHIVAL PUBLICATIONS – Past Publications

126. “Extended SiC Defects: Polarized Light Microscopy and SWBXT Ratification,” with X. Ma, M. Dudley, and W. Vetter. Jap J Appl Phys, 42: L1077-L1079, 2003.

125. “Investigation of Boron Diffusion in 6H-SiC,” with Y. Gao and S.I. Soloviev. Applied Physics Letters, 83(5): 905-907, Aug. 2003.

124. “Influence of a Diffraction Vectors Noncomplanarity on the Double Crystal Rocking Curves Parameters,” by P. G. Muzykov, A. Y. Razumovsky, T. S. Sudarshan, and M. A Tchernov. Russian Journal of Plant Laboratory and Material Testing (“Zavodskaya laboratoriya. Diagnostika materialov”), Vol. 69, p. 24-28, 2003.

123. “Electrical Characterization of Ni/porous SiC/n-SiC Structure,” with A. Grekov, S. Soloviev, and T. Das, Mat. Sci. For. 433-436: 419-422, 2003.

122. “Non-destructive SiC Wafer Evaluation Based on an Optical Stress Technique,” with X. Ma, M. Parker, Y. Ma, and T. Kubota, Mat. Sci. For. 433-436: 361-364, 2003.


121. "Graphitization of the Seeding Surface during the Heating Stage of SiC PVT Bulk growth,” with R.V. Drachev, D.I. Cherednichenko, I.I. Khlebnikov, and Y.I. Khlebnikov, Mat. Sci. For. 433-436: 99-102, 2003.

120. “High Resistivity Measurement of SiC Wafers Using Different Techniques,” with P.G. Muzykov, Y.I. Khlebnikov, S.V. Regula, and Y. Gao, Journal of Electronic Materials, 32(6): 505-510, 2003.

119. “Structural and Electrical Characterization of Porous Silicon Carbide Formed in n-6H-SiC Substrates,” with S. Soloviev and T. Das, Electrochemical and Solid-State Letters, 6(2): 2003.

118. “A Method for Defect Delineation in Silicon Carbide Using Potassium Hydroxide Vapor,” with R.T. Bondokov, I.I. Khlebnikov, T. Lashkov, E. Tupitsyn, G. Stratiy, and Y. Khlebnikov. Japanese Journal of Applied Physics, 41(12): 7312-7316, Dec. 2002.

117. "Comparison of Figures-Of-Merit of N and P SiC Schottky Diodes at High Temperatures,” with M. Tarplee and V. Madangarli, Japanese Journal of Applied Physics 41: 7322-7326, Dec. 2002.

116. "Surface Morphology of 6H-SiC After Thermal Diffusion," with Y. Gao and S. Soloviev, Journal of Electronic Materials, 31(5): 376, 2002.

115. "Current-Voltage Characteristics of An Integrated Schottky Diode," with V. Madangarli and M. Tarplee, Solid State Electronics, 46(5): 753-757, May 2002.

114. "Nondestructive Defect Delineation in SiC Wafers Based on an Optical Stress Technique," with X. Ma and M. Parker, Applied Physics Letters, 80(18): May 2002.

113. "High Field Insulation Relevant to Vacuum Microelectronic Devices," with X. Ma and P.G. Muzykov, IEEE Trans. on Dielectrics and Electrical Insulation, 9(2): 216-225, April 2002.

112. "Influence of Crystal Thickness on the SiC PVT Growth Rate," with D.I. Cherednichenko, Y.I. Khlebnikov, R.V. Drachev, and I.I. Khlebnikov, Mat. Sci. Forum, 389-393: 95-98, 2002.

111. "Oxidation of Porous 4H-SiC Substrates" with S. Soloviev and T. Das, Mat. Sci. Forum, 389-393: 1113-1116, 2002.

110. "Aluminum and Boron Diffusion into a-face SiC Substrates, " with S. Soloviev, Y. Gao, Y. Khlebnikov, and I.I. Khlebnikov, Mat. Sci. Forum, 389-393: 557-560, 2002.

109. "Edge Breakdown Issues in Field Emission Displays," with X. Ma, IEEE Transactions on Dielectrics and Electrical Insulation, 8(6): 1025-1028, December 2001.

108. "Selective Doping of 4H-SiC by Co-diffusion of Aluminum and Boron," with Y. Gao and S. Soloviev, Journal of Applied Physics, 90(11): 5647-5651, Dec. 2001.

107. "Design Rules for Field Plate Edge Termination in SiC Schottky Diodes," with M. Tarplee, Q. Zhang, and V. Madangarli, IEEE Trans. On Electron Devices, 48(10): 2659-2666, Oct. 2001.

106. "The Influence of High-Temperature Annealing on SiC Schottky Diode Characteristics," with Q. Zhang, Journal of Electronic Materials, 30(11): 1466-70, July 2001.

105. "Liquid Phase Silicon at the Front of Crystallization during SiC PVT Growth," with R.V. Drachev, G.D. Stratiy, D.I. Cherednichenko, and I.I. Khlebnikov, Journal of Crystal Growth, 233: 541-547, July 2001.

104. "Planar 4H- and 6H-SiC p-n Diodes Fabricated by Selective Diffusion of Boron,” with Y. Gao and S. Soloviev, Solid State Electronics, 45: 1987-1990, June 2001.

103. “Local Epitaxy and Lateral Epitaxial Overgrowth of SiC,” Y. Khlebnikov, I. Khlebnikov, and M. Parker, J. of Crystal Growth, 233: 112-120, June 2001.

102. "Triple-Junction Issues In Field Emission Displays," with X. Ma, Journal of Vacuum Science and Technology, B19(3): 683-686, May/June 2001.

101. "Lateral Current Spreading in SiC Schottky Diodes Using Metal Overlap Edge Termination," with Q. Zhang, Solid State Electronics 45: 1847-1850, May 2001.


100. "Forward Characteristics of P+PN+ and P+NN+ Diodes of 6H-SiC," with Q. Zhang, Solid State Electronics 45: 1559-1563, April 2001.

99. "Dislocations as a Source of Micropipe Development in the Growth of Silicon Carbide,” with D.I. Cherednichenko, Y. I. Khlebnikov, I. I. Khlebnikov, and R.V. Drachev, Journal of Applied Physics., 89(7): 4139-41, April 1, 2001.

98. "Boron Diffusion into 6-H-SiC Through Graphite Mask," with S. Soloviev and Y. Gao, Journal of Electronic Materials, 30(3): 224-227, Mar. 2001.

97. "SiC Planar Mos-Schottky Diodes: A High Voltage Schottky Diode with Low Leakage Current,” with Q. Zhang and V. Madangarli, Solid State Electronics 45: 1085-1089, March 2001.

96. "Comparison of Current–Voltage Characteristics of N and P Type 6H-SiC Schottky Diodes," with Q. Zhang, V. Madangarli, and M. Tarplee, Journal of Electronic Materials, 30(2): 196-201, 2001.

95. "Doping of 6H-SiC by Selective Diffusion of Boron," with S.I. Soloviev and Y. Gao, Applied Physics Letters,

77(24): 4004-06, Dec. 2000. 94. "Prebreakdown and Breakdown Investigation of Needle-Plane Vacuum Gaps in the Micron/Submicron Regime," with P.G. Muzykov and X. Ma, J. of Vacuum Science and Technology B, 18(3): 1222-26, May/June 2000.

93. "High Field Performance of Thin-Wall Spacers Bridging Two Thin-film Electrodes," with X. Ma, IEEE Transaction Dielectrics and Electrical Insulation, 7(2): 277-82, April 2000.

92. “An Analytical Study of the SiC Growth Process from Vapor Phase,” with D. Cherednichenko and I. Khlebnikov, Material Science Forum, 338-342: 35-38, 2000.

91. “Damage-Free Surface Modification of Hexagonal Silicon Carbide Wafers,” with T.C. Chandler and M.B. Lari, ibid., pp. 845-48.

90. “Selective Doping of 6H-SiC by Diffusion of Boron,” with S. Soloviev, Y. Gao, and I. Khlebnikov, ibid., pp. 945-48.

89. “Initial Stage of Crystallization in the Growth of Silicon Carbide on Substrates with Micropipes,” with I. Khlebnikov, D. Cheredinchenko, and Y. Khlebnikov, ibid., pp. 59-62.

88. "Lateral Current Spreading in SiC Schottky Diodes Using Field-Plate Edge Termination," with Q. Zhang, V. Madangarli, and M. Tarplee, ibid., pp. 1223-26.

87. "Computer Simulation of P-Type SiC Schottky Diode Using ATLAS," with M. Tarplee, V. Madangarli, and Q. Zhang, ibid., pp. 1231-34.

86. "Characterization of SiC Using Raman Spectroscopy," with J C. Burton, F.H. Long, Y. Khlebnikov, and M. Parker, ibid., pp. 615-18.

85. “Structural Defect Visualization and Oxide Breakdown in SiC Wafers after Thermal Oxidation," with S. Soloviev, I. Khlebnikov, and V. Madangarli, Material Science and Engineering B61-62: 464-467, June 1999.

84. "High Field Characteristics of Dielectric Spacers in Thin-Film Electrode Vacuum Gaps," with X. Ma, J. of Vacuum Science and Technology B, 17 (4): 1580-84, July/August 1999.

83. "High Field Breakdown of Narrow Quasi Uniform Field Gaps in Vacuum," with P.G. Muzykov, X. Ma, and D.I. Cherednichenko, J. Applied Physics, 85(12): 8400-04, 15 June, 1999.

82. "High Field Characteristics of Thin-Film Metal Electrodes," with X. Ma and P.G. Muzykov, J. Vac. Sci. Technol. B, 17(2): 769-72, Mar./Apr. 1999.

81. “Correlation between Oxide Breakdown and Defects in SiC Wafers,” with S. Soloviev, I. Khlebnikov, and V. Madangarli, Journal of Electronic Materials, 27(10): 1124-1127, October, 1998.

80. “Prebreakdown and Breakdown Investigation of Broad Area Electrodes in the Micrometric Regime,” with X. Ma, Journal of Vacuum Science and Technology B, p. 1174-1179, May/June 1998.


79. "Surface Flashover Effects in AlGaN/GaN HFETs," with G. Gradinaru, M.A. Khan, Q. Chen, and J. Yang, Electronic Letters, 34(9): 927-928, April 1998.

78. "High Field Breakdown Characteristics of Micrometric Gaps in Vacuum," with X. Ma, J. Vacuum Sci. Technol., B16(2): 745-48, Mar/Apr. 1998.

77. "Prebreakdown and Breakdown Effects in AlGaN//GaN Heterostructure Field Effect Transistors," with G. Gradinaru, M.A. Khan, N.C. Kao, Q. Chen, and J. Yang, Applied Physics Letters, 72(12): 1475-1477, March 1998.

76. "Dielectric Surface Flashover in Vacuum: Experimental Design Issues," with C.R. Li, IEEE Trans. on Dielectrics and Elec. Insul., invited article, 4(5): 657-62, Oct. 1997.

75. “Electrode Architecture Related to Surface Flashover of Solid Dielectrics in Vacuum," IEEE Trans. on Dielectrics and Elec. Insul., invited article, 4(4): 374-81, Aug. 1997.

74. "High Field/High Temperature Performance of Semi-Insulating Silicon Carbide," with G. Gradinaru, G. Korony, and W. Mitchel, Diamond and Related Materials 6, ELSEVIER Science S.A., p. 1392-95, 1997.

73. "Metalorganic Chemical Vapor Deposition-Grown AlN on 6H-SiC for Metal-Insulator-Semiconductor Device Applications," with C.C. Tin, Y. Song, T. Isaacs-Smith, and V. Madangarli, J. Electronic Materials, 26(3): 212-16, 1997.

72. "Electrical Properties of High Resistivity 6H-SiC under High Temperature/High Field Stress," with G. Gradinaru, Appl. Phys. Lett., 70 (6): 735-737, Feb. 1997.

71. "High Field Flashover Strength of Intrinsic Gallium Nitride and Aluminum Nitride in Vacuum," with M.A. Khan, Q. Chen, and G. Gradinaru, Appl. Phys. Lett., 69(2): 254-256, July 1996.

70. "Surface Filamentation in Semi-Insulating Silicon," with G. Gradinaru, J. Appl. Phys., 79(11): 8557-8564, June 1996.

69. “High Field Activation of Micropipes in High Resistivity Silicon Carbide,” with G. Gradinaru, G. Korony, W. Mitchel, and R.H. Hopkins, Journal of Electronic Materials, 25(5): 893-898, May 1996.

68. "Influence of Contact Architecture on the High Field Characteristics of Planar Silicon Structures," with V.P. Madangarli, et. al., IEEE Trans. Electron. Devices, 43(5): 793-799, May 1996.

67. "Spark-Gap Atomic Emission Microscopy," with P.G. van Patten, J.D. Noll, and M.L. Myrick, J. Phys. Chem., 100: 3646-51, 1996.

66. "Characteristics of Preflashover Light Emission from Dielectric Surfaces in Vacuum," with C.R. Li, IEEE Trans. on Electrical Insulation, 2(3): 483-91, June 1995.

65. “High Field Effects in High Resistivity Silicon Carbide in Lateral Configurations,” with G. Gradinaru, G. Korony, W. Mitchel, and R.H. Hopkins, Appl. Phys. Lett., 67(23): 3435-3437, Dec. 1995.

64. "Bulk Breakdown of High Field Silicon-Dielectric Systems," with G. Gradinaru, IEEE Trans. on Electron Devices, 42(6): 1156-65, June 1995.

63. "Characteristics of Preflashover Light Emission from Dielectric Surfaces in Vacuum," with C.R. Li, IEEE Trans. on Electrical Insulation, 2(3): 483-91, June 1995.

62. "Preflashover Luminosity along an Alumina/Vacuum Interface," with T. Asokan, IEEE Trans. on Electrical Insulation, 1(6): 1180-85, Dec. 1994.

61. "Dielectric Surface Preflashover Processes in Vacuum," with C.R. Li, J. Applied Phys., 76(6): 3313-3320, 15 September 1994.

60. "The Influence of Semiconductor and Dielectric Properties on Surface Flashover in Silicon-Dielectric Systems," with G. Gradinaru and V. Madangarli, IEEE Trans. on Electr. Dev., 41(7): 1233-38, July 1994.

59. "Influence of Surface Microstructure on the Electric and Spectroscopic Characteristics of Dielectric Surface Flashover," with Li and Sundararaman IEEE Trans. on Electrical Insulation, 1(2): 315-22, 1994.


58. "An Analysis of the Scanning Electron Microscope Mirror Image Based on the Dielectric Surface Microstructure," with T. Asokan, J. of Appl. Phys., 75(8): 3715-22, April 15, 1994.

57. "Effect of Residual Stress on the Surface Flashover of Alumina Ceramics," with T. Asokan, IEEE Trans. on Electr. Insul., 1(1): 97-105, Feb. 1994.

56. "Measurement of Space Charge Field in Transformer Oil using Kerr Effect," with S. M. Mahajan, Ibid., pp. 63-70.

55. "Spectroscopic Observations of Surface Flashover across an Insulator in Vacuum under Pulsed Excitation," with Li and Sundararaman, IEEE Trans. on Plasma Sci., 21(5): 598-04, Oct. 1993.

54. "Optimization of Test Procedure to Improve Insulator Performance under High Electric Stress," with T. Asokan, IEEE Trans. on Elec. Insul., 28(4): 545-554, August 1993.

53. "Dependence on the Surface Flashover Properties of Alumina on the Polishing Abrasive Parameters," with T. Asokan, IEEE Trans. on Electrical Insulation, 28(4): 535-544, Aug. 1993.

52. "Surface Flashover in Silicon-Vacuum Systems," with G. Gradinaru and V. Madangarli, IEEE Trans. on Electrical Insulation, 28(4): 555-565, Aug. 1993.

51. "Insulator Surface Flashover Conditioning: A Streak Photographic Investigation," with T. Asokan, IEEE Trans. on Plasma Science, 21(3): 298-304, June 1993.

50. "Prebreakdown and Breakdown Phenomena in High-Field Semiconductor-Dielectric Systems," with G. Gradinaru, J. Appl. Phys., 73(11): 7643-66, June 1993.

49. "Spectral Nature of Luminosity Associated with the Surface Flashover Process," with T. Asokan, IEEE Trans. on Electrical Insulation, 28(2): 192-99, April 1993.

48. "Streak Photography of the Dynamic Electrical Discharge Behavior along Insulator Surfaces in Vacuum," with T. Asokan, IEEE Trans. on Electrical Insulation, 28(1): 101-110, February 1993.

47. "New Results on Surface Flashover in Silicon-Dielectric Systems," with G. Gradinaru and V. P. Madangarli, Optically Activated Switching II, January 1993.

46. "Computational Analysis of the Surface Permittivity and Charging of Dielectrics using the ‘SEM Mirror Technique’," with J. Wang, IEEE Trans. on Electrical Insulation, 27(6): 1127-35, Dec. 1992.

45. "Role of Coulombic Centers on the Insulator Surface Breakdown Characteristics," with Asokan, IEEE Trans. on Electrical Insulation, 27(5): 1040-49, Oct. 1992.

44. "Time-Resolved Prebreakdown X-ray Emission from Polycrystalline Alumina Bridged Vacuum Gaps for Impulse Stresses", with R. G. Bommakanti, J. of Applied Physics, 71(5): 2181-88, March 1992.

43. "Effect of Test Environment on the Surface Breakdown Characteristics of Photoconducting Silicon," with Asokan, Optically Activated Switching II, SPIE, 1632: 231-41, Jan. 1992.

42. "On the Negative Differential Resistance Effect in the High Field Semiconductor-dielectric Systems," with G. Gradinaru and V.P. Madangarli, Applied Physics Letters, 61(1): 55-57, January 1992.

41. "A Photoelectronic Source for Electron Avalanche Measurements," with Mahajan, Review of Scientific Instruments. 62(10): 2495-96, Oct. 1991.

40. "Flashover in Wide Band-Gap High Purity Insulators: Methodology and Mechanisms," with C. Le Gressus, C. Blaise, et. al., J. of Applied Physics. 69(9): 1-10, May 1991.

39. "Protection of Fast and Sensitive Preamplifiers," with Mahajan, Review of Scientific Instruments. 62(4): 1102-03, April 1991.

38. "Measurement of Electrical and Optical Avalanches Near Solid Insulators in High pressure (up to 0.3 MPa) Nitrogen Gas," with S. M. Mahajan, J. of Applied Physics, 69(5): 2877, March, 1991.

37. "New Findings of Pulsed Surface Breakdown Along Silicon in Vacuum," with S.H. Nam, IEEE Trans. on Electron Devices, 37(12): 2466-71, Dec. 1990.


36. "Influence of Mechanical Grinding and Polishing Operations of Brittle Polycrystalline Alumina on the Pulsed Surface Flashover Performance," with Bommakanti, J. of Applied Physics, 67(11): 6991-97, 1990.

35. "Trap Dominated Breakdown Processes in an Insulator Bridged Vacuum Gap," with Bommakanti, J. of Applied Physics, 66(5): 2091-99, Sept. 1989.

34. "Observation of Three Distinct Phases Leading to Pulsed Surface Flashover Along Silicon without end Contacts in Vacuum," with S.H. Nam, IEEE Trans. on Electrical Insulation, 24(6): 979-83, 1989.

33. "Avalanches near a Solid Insulator in Nitrogen Gas at Atmospheric Pressure," with S. M. Mahajan, J. of Applied Physics, 66(3): 1095-1102, Aug. 1989.

32. "Studies on the self and Laser Initiated Discharge Characteristics at Dielectric/gas Interfaces," with K. Foo, IEEE Trans. on Plasma Science, 17(4): 588-94, Aug. 1989.

31. "Analysis and Design of a Traveling Wave Tube Feedthrough," with R. Bommakanti and R. Peters, IEEE Trans. on Electrical Insulation, 24(6): 1053-62, 1989.

30. "DC Surface Flashover Mechanism Along Solids in Vacuum, Based on a Collision Ionization Model," with Jaitly, J. of Applied Physics, 64(7): 3411-18, Oct. 1988.

29. "X-ray Emission and Prebreakdown Currents in Plain and Dielectric Bridged Vacuum Gaps Under DC Excitation," with Jaitly, IEEE Trans. on Electrical Insulation, EI-23(2): 231-42, April 1988.

28. "In-Situ Insulator Surface Charge Measurements in Dielectric Bridged Vacuum Gaps Using an Electrostatic Probe," with Jaitly, IEEE Trans. on Electrical Insulation, EI-23(2): 261-73, April 1988.

27. "45 Degree Insulator Surface Flashover," with Arnold, Thompson, and Dougal, IEEE Trans. on Electrical Insulation. EI-23(1): 17-25, Feb. 1988.

26. "Novel Insulator Designs for Superior DC Hold-off in Bridged Vacuum Gaps," with Jaitly, IEEE Trans. on Electrical Insulation. EI-22(6): 801-10, Dec. 1987.

25. "Degradation due to Wet Hydrogen Firing on the High Voltage Performance of Alumina Insulators in Vacuum Applications," with Jaitly, Dougal and Miller, IEEE Trans. on Electrical Insulation. EI-22(4): 447-52, Aug. 1987.

24. "Partial Discharge Characteristics in Barium Titanate Multi-Layered Structures-- Effect of Material and Structural Parameters," with Chang, Thompson, Dougal, Chan and Rawal, IEEE Trans. on Electrical Insulation, EI-22(4): 489-95, Aug. 1987.

23. "Swarm Parameters Along Gas-Solid Dielectric Interfaces," with Mahajan and Dougal, Electric Insulation and Dielectric Phenomena, IEEE 86CH23l5-0, pp. 558-63, Nov. l986.

22. "Electro-Cathodoluminescence in Insulator Bridged Vacuum Gaps Under High Voltage Stress," with Jaitly, Journal of Applied Physics, 60(l0): 3711-l9, Nov. l986.

21. Invited paper: “Mechanism of Surface Flashover Along Solid Dielectrics in Compressed Gases - A Review,” with Dougal. IEEE Digest of Literature on Dielectrics, published by the Electrical Insulation Society, EI-2l(5): 727-746, October l986.

20. "A New Method for Etching Molybdenum," with M.H. Lim, and S. Goode, Journal Praktische Metallagraphie, West Germany, 23: 450-457, Sept. 1986.

19. "Analysis of Electric Stress Distribution in Cavities Embedded Within Dielectric Structures," with Chang and Thompson, IEEE Trans. on Electrical Insulation, EI-21(2): 213-219, April 1986.

18. "Chemical Etching of Molybdenum Using Nonaqueous Solvents," with Lim and Goode, Metal Finishing Journal, pp. 59-61, January 1986.

17. "Pre-Breakdown and Breakdown Phenomena Along PMMA Surfaces in Vacuum and Nitrogen Gas Stressed by 60 Hz Voltages," with Lewis, Thompson, Lee and Dougal. IEEE Tr. on Electrical Insulation, EI-19(6): 512-518, December 1984.


16. "Wetting of Metal Surfaces with a Liquid Metal Using a Plasma Interaction Technique," with M. H. Lim, et. al. J. of Vacuum Science and Technology, 2(4): 1503-1508, October 1984.

15. "Wetting of Al Electrodes with Mercury," with M. H. Lim, et. al. Journal of Applied Physics, USA, 56(8): 2236-2240, Oct. 1984.

14. "Breakdown Time of a Triggered Vacuum and Low-pressure Switch," with J.M. Wilson, J.E. Thompson and R.L. Boxman, IEEE Trans. on El. Insul., EI-l8(3): 238-242, June l983.

13. "Predischarge Current Measurements in Vacuum Gaps Bridged with Plexiglas Insulators," with R. Lee, J.E. Thompson and G.R. Nagabhusana. IEEE Trans. on Elect. Insul., EI-l8(3): 280-286, June l983.

12. “Vacuum Switch Trigger Delay Characteristics," with F.T. Warren, J.M. Wilson, and J.E. Thompson, Special Issue on Plasma Switches, IEEE Transactions on Plasma Science, PS-l0(4): 298-30l, Dec. l982.

11. "Electrostatic Field Evaluation by the Electrolytic Tank Methods," with J. E. Thompson, K. Salisbury, L. Park, G. R. Nagabhusana, Ibid., pp. 374-78.

10. "Predischarge Current Measurements and Optical Surface Field Measurements Associated with Insulator Surface Flashover," with R. Lee, H. Rhinehart, J.E. Thompson, Gaseous Dielectrics III, Pergamon Press, l982, pp. 349-55.

9. "The Aging of Electrical Insulation at Cryogenic Temperatures," with R.J. Densley and A.T. Bulinski, IEEE Trans. on Electrical Insulation, EI-l5(2): 83-88, April l980.

8. "The Effects of Water Immersion on the Electrical Properties of Miniature XLPE Cables," with R.J. Densley and A.T. Bulinski, Canadian Elec. Engr. J., 5(2): 14, l980.

7. "Short-Term Electrical Insulating Characteristics of Polymeric Materials Immersed in Liquid Nitrogen," with A.T. Bulinski and R.J. Densley, IEEE Trans. on Electrical Insulation, EI-l4(4): 211-22l, Aug. 1979.

6. "Micro-Particles Production in a Uniform Field Vacuum Gap with Solid Dielectric Spacer," with J.D. Cross, IEEE Trans. on Electrical Insulation, EI-l2(5): 376-77, October l977.

5. "Prebreakdown Processes Associated with Surface Flashover of Solid Insulations in Vacuum," with J.D. Cross and K.D. Srivastava, IEEE Trans. on Electrical Insulation, EI-l2(3): 200-208, June l977.

4. "The Effect of Chromium Oxide Coatings on Surface Flashover of Alumina Spacers in Vacuum," with J.D. Cross, IEEE Trans. on Electrical Insulation, EI-11(1): 32-35, l976.

3. "High Speed Photography of Surface Flashover Under Direct Voltages in Vacuum," with J.D. Cross, IEEE Trans. on Electrical Insulation, EI-ll(1): 63-66, l976.

2 "The Effect of Cuprous Oxide Coatings on the Surface Flashover of Dielectric Spacers in Vacuum," with J.D. Cross, IEEE Trans. on Electrical Insulation, EI-9(4): l46-l50, Dec. l974.

1. "DC Electric Field Modifications Produced by Solid Insulators Bridging a Uniform Field Vacuum Gap," with J.D. Cross, IEEE Trans. on Electrical Insulation, EI-8: l22-l28, Dec. l973.

B.1. INTERNATIONAL CONFERENCE PRESENTATIONS – 2004-2014

2014 218. “Glide of Threading Edge Dislocations after Basal Plane Dislocation Conversion during 4H-SiC Epitaxial

Growth”, M. Abadier, H. Song, T.S. Sudarshan, Y.N. Picard and M. Skowronski, 2014 MRS Fall Meeting & Exhibit, Boston, Massachusetts, Novermber 30 – December 5, 2014.

217. “Study of shift associated with basal plane to threading edge dislocation conversion in SiC epitaxial growth”, Haizheng Song, Mina Abadier, Yoosuf N. Picard, Marek Skowronski, MVS Chandrashekhar, Tangali S. Sudarshan, European Conference on Silicon Carbide and Related Materials, Grenoble, France September 21-25, 2014.


216. “Effect of C/Si ratio and nitrogen doping on 4H-SiC epitaxial growth using dichlorosilane precursor”, Haizheng Song, MVS Chandrashekhar, Tangali S. Sudarshan, European Conference on Silicon Carbide and Related Materials, Grenoble, France, September 21-25, 2014

215. "The limits of Tung's model: On the origin of non-ideality and hysteresis in SiC schottky diodes", Sabih U. Omar, Gabriel Brown, Anusha Balachandran, Tawhid A. Rana, Haizheng Song, Tangali S. Sudarshan, MVS Chandrashekhar, The 56th Electronic Materials Conference (EMC), Santa Barbara, CA, June 25, 2014.

214. “Large Molecular Sensitivity Enhancement by Graphene/Si Chemi-Diodes,” Amol K. Singh, Md Ahsan Uddin, Tangali S. Sudarshan, M. V. Chandrashekhar and Goutam Koley, oral presentation at the Electronic Materials Conference, Santa Barbara, CA, June 25, 2014.

213. “Metal Functionalized Graphene/Si Heterojunction Diode for H2 Sensing,” Md Ahsan Uddin, Amol K. Singh, Tangali S. Sudarshan, MVS Chandrashekhar and Goutam Koley, oral presentation at the Electronic Materials Conference, Santa Barbara, CA, June 25, 2014.

212. "Fermi level unpinning in Ni-silicide/4H-SiC schottky diode fabricated on epilayers grown by tetrafluorosilane-based chemical vapor deposition (CVD)", Sabih U. Omar, Gabriel Brown, Anusha Balachandran, Tawhid A. Rana, Haizheng Song, Tangali S. Sudarshan, MVS Chandrashekhar, TMS 2014, 143rd Annual Meeting and Exhibition, San Diego, California, February 16-20 , 2014.

2013 211. “Tunable Graphene/Si Schottky Diode Sensor,” Amol Singh, Md. Ahsan Uddin, Tangali Sudarshan and

Goutam Koley, oral presentation at the IEEE Sensors conference, Baltimore, MD, Nov 5, 2013. (Proceedings of the IEEE Sensors conference, pg. 1283-1286, Nov 3-6, Baltimore, MD, 2013.)

210. “Pt-functionalized Graphene/Si Heterostructure for Hydrogen Sensing,” Md. Ahsan Uddin, Amol Singh, Tangali Sudarshan and Goutam Koley, oral presentation at the IEEE Sensors conference, Baltimore, MD, Nov 5, 2013. (Proceedings of the IEEE Sensors conference, pg. 1279-1282, Nov 3-6, Baltimore, MD, 2013.)

209. “Selective Multimodal Gas Sensing in Epitaxial Graphene by Fourier Transform Infrared Spectroscopy,” Shamaita Shetu, B. K. Daas, Kevin Daniels, Tangali Sudarshan, Goutam Koley, Mvs Chandrashekhar, poster presentation at the IEEE Sensors conference, November 5, 2013.

208. “Controlling Donor and Acceptor Type Molecular Doping of CVD Graphene,” A. K. Singh, M. A. Uddin, J. T. Tolson, N. Sbrockey, G. S. Tompa, M. G. Spencer, T. S. Sudarshan and Goutam Koley, oral presentation at the Electronic Materials Conference, Notre Dame, IN, June 26 (2013).

207. “Tuning the Sensitivity of Toxic Gas Detection Using Back Gate Bias in CVD Graphene Field Effect Transistors,” Amol K. Singh, Md. Ahsan Uddin, James T. Tolson, G. S. Tompa, N. Sbrockey, M. G. Spencer, Tangali S. Sudarshan and Goutam Koley, oral presentation at the Electronic Materials and Applications Conference, Orlando, Florida, January 23 (2013).

206. “Evidence of Two-Dimensional Nucleation during 4H-SiC Homoepitaxy on 4° off-cut Substrates”, R. L. Myers-Ward, N. A. Mahadik, R. E. Stahlbush, V. D. Wheeler, L. O. Nyakiti, C. R. Eddy, Jr., D. K. Gaskill, H. Song, T. S. Sudarshan, Y. N. Picard, M. Skowronski, Int. Conf. Silicon Carbide and Related Materials, Miyazaki, Japan, September 29 – October 4, 2013

205. “Nucleation of In-grown Stacking Faults and Dislocation Half loops during 4H-SiC Epitaxy”, M. Abadier, R. L. Myers-Ward, N. A. Mahadik, R. E. Stahlbush, V. D. Wheeler, L. O. Nyakiti, C. R. Eddy, Jr., D. K. Gaskill, H. Song, T. S. Sudarshan, Y. N. Picard, M. Skowronski, 224th Electrochemical Society Meeting, San Francisco, CA, October 27 – November 1, 2013

204. “Comparison of SiC epitaxial growth from dichlorosilane and tetrafluorosilane precursors”, Tangali S.


Sudarshan, Tawhid Rana, Haizheng Song, MVS Chandrashekhar, 224th ECS Meeting, San Francisco, California, October 27 – November 1, 2013. (invited talk)

203. “Epitaxial growth of 4H-SiC using tetrafluorosilane precursor and study of defect evolution”, Tawhid Rana, Haizheng Song, MVS Chandrashekhar, Tangali S. Sudarshan, The 55th Electronic Materials Conference (EMC 2013), University of Notre Dame, Notre Dame, IN, June 26-28, 2013.

202. “Enhancement of Basal Plane Dislocation Conversion in SiC Epitaxial Growth by Mild Substrate Etching”, Haizheng Song, Tawhid Rana, Sabih U. Omar, MVS Chandrashekhar, Tangali S. Sudarshan, The 55th Electronic Materials Conference (EMC 2013), University of Notre Dame, Notre Dame, IN, June 26-28, 2013.

201. “Effect of structural defects on the reverse I-V characteristics of Ni/4H-SiC schottky diodes: establishment of defect-dependent performance metrics”, Sabih U. Omar, Haizheng Song, Tawhid A. Rana, Tangali S. Sudarshan, MVS Chandrashekhar, The 55th Electronic Materials Conference (EMC 2013), University of Notre Dame, Notre Dame, IN, June 26-28, 2013.

200. “Nucleation of in-grown stacking faults and dislocation half loops in 4H-SiC epilayers deposited at high growth rate”, M. Abadier, R.L. Myers-Ward, N. Mahadik, R.E. Stahlbush, V.D. Wheeler, L.O. Nyakiti, C.R. Eddy, Jr., D.K. Gaskill, H. Song, T.S. Sudarshan, Y.N. Picard and M. Skowronski, The 55th Electronic Materials Conference (EMC 2013), University of Notre Dame, Notre Dame, IN, June 26-28, 2013.

2012 199. “Infra-red Refl ection of Epitaxial Graphene on Cu and Ni”, B.K. Daas, A. Singh, J. Tolson, S. Ma, T.S.

Sudarshan, G. Koley, MVS Chandrashekhar, 54th Annual Electronic Materials Conference (EMC 2012), Pennsylvania State University, State College, PA , June 20 – 22, 2012.

198. “Dispersion Relation of Plasmons at EG/SiC Interface: Tuning the Plasmon”, B.K. Daas, S.Ma, T.S. Sudarshan and MVS Chandrashekhar, 54th Annual Electronic Materials Conference (EMC 2012), Pennsylvania State University, State College, PA , June 20 – 22, 2012.

197. “Biological Sensing Applications of Epitaxial Graphene”, Kevin M. Daniels, Nirupam Aich, Kristen P. Miller, Biplob K. Daas, Tangali S. Sudarshan, Navid Saleh, Alan W. Decho, Mvs Chandrashekhar, 54th Annual Electronic Materials Conference (EMC 2012), Pennsylvania State University, State College, PA , June 20 – 22, 2012.

196. “A Study on the growth mechanism of epitaxial graphene on polar and non-polar 6H-SiC faces”, Shamaita S Shetu, B.K.Daas, K.Daniels, T.S.Sudarshan, MVS Chandrashekhar, 54th Annual Electronic Materials Conference (EMC 2012), Pennsylvania State University, State College, PA , June 20 – 22, 2012.

195. “Controlled Synthesis of InN NWs and Suspended Nanostructures”, Ehtesham B. Quddus, Alina Wilson, T. S. Sudarshan and Goutam Koley, 54th Annual Electronic Materials Conference (EMC 2012), Pennsylvania State University, State College, PA , June 20 – 22, 2012.

194. “Employing a Eutectic Etch to Mitigate Basal Plane Dislocations in 4H-SiC Epilayers”, Virginia Wheeler, Rachael Myers-Ward, Luke Nyakiti, Haizheng Song, Tangali Sudarshan, Robert Stahlbush, Nadeemullah Mahadik, Charles Eddy Jr. and Kurt Gaskill, 54th Annual Electronic Materials Conference (EMC 2012), Pennsylvania State University, State College, PA , June 20 – 22, 2012.

193. “Estimation of Carrier Diffusion Length from the Room Temperature Photoluminescence Spectra of 4H-SiC Epilayers”, Sabih U. Omar, Haizheng Song, MVS Chandrashekhar and Tangali S. Sudarshan, 54th Annual Electronic Materials Conference (EMC 2012), Pennsylvania State University, State College, PA , June 20 – 22, 2012.


2011 192. “Epitaxial Graphene Growth on Polar and Non Polar Faces of 6H-SiC,” by B.K. Daas, K. Daniels, S. Shetu,

T.S. Sudarshan, MVS Chandrashekhar, ICSCRM2011, Cleveland, OH, September 11-16, 2011.

191. “Evidence of Electrochemical Graphene Functionalization by Raman and Scanning Tunneling Spectroscopy”, Kevin M. Daniels, B. Daas, N. Srivastava, C. Williams, R. M. Feenstra, T. S. Sudarshan, and MVS Chandrashekhar, ICSCRM2011, Cleveland, OH, September 11-16, 2011.

190. “Molecular Gas Adsorption Induced Carrier Transport Studies of Epitaxial Graphene using Polariton Enhanced IR Reflection spectroscopy: Influence of Interband Scattering,” by B.K. Daas, W.K.Nomani, K.M.Daniels, T.S. Sudarshan, Goutam Koley, MVS Chandrashekhar, ICSCRM 2011, Cleveland, OH, September 11-16, 2011.

189. “In-Grown Stacking Faults in SiC-CVD using Dichlorosilane and Propane as Precursors,” by Haizheng Song, Sabih U. Omar, Tawhid Rana, M.V.S. Chandrashekhar, and Tangali S. Sugarcane, 2011 International Conference on Silicon Carbide and Related Materials (ICSCRM 2011), Cleveland, Ohio, September 11-16, 2011.

188. “Investigation of Basal Plane Dislocation Reduction/Elimination by Molten KOH-NaOH Eutectic Etching Method,” by Haizheng Song and Tangali S. Sudarshan, 2011 International Conference on Silicon Carbide and Related Materials (ICSCRM 2011), Cleveland, Ohio, September 11-16, 2011.

187. “Comparison of silicon carbide epitaxial growths at various growth pressures using dicholorosilane and silane gases,” by Rana Tawhid, Haizheng Song, and Tangali S. Sudarshan, ICSCRM 2011, Cleveland, Ohio, September 11-16, 2011.

186. “Behavior of particles in growth reactor and their effect on Silicon Carbide epitaxial growth,” by Rana Tawhid, Haizheng Song, and Tangali S. Sudarshan, ICSCRM 2011, Cleveland, Ohio, September 11-16, 2011.

185. “Room temperature photoluminescence from 4H-SiC epilayers: Non-destructive estimation of carrier diffusion length and in-grown stacking fault density,” by Omar Sabih, Haizheng Song, MVS Chandrashekhar, and Tangali S. Sudarshan, ICSCRM 2011, Cleveland, Ohio, September 11-16, 2011.

184. “Step Controlled Epitaxy on 4° And 1° Off-Cut 4H and 6H-SiC Substrate Using Dicholorosilane,” by Omar Sabih, Haizheng Song, Ifetkhar Chowdhury, MVS Chandrashekhar, and Tangali Sudarshan, 53rd Electronic Materials Conference and Exhibition (EMC 2011), University of California, Santa Barbara, California, June 22-24, 2011.

183. “Slow Thermal Emission from Traps in 4H-SiC Epilayers”, Paul Klein, Amitesh Shrivastava, Tangali Sudarshan, 53rd Electronic Materials Conference and Exhibition (EMC 2011), University of California, Santa Barbara, California, June 22-24, 2011.

182. “Study of Epitaxial Graphene on Non-Polar 6H-SiC Faces”, Biplob Daas, KM Daniels, S. Shetu, TS Sudarshan, MVS Chandrashekhar, 53rd Electronic Materials Conference and Exhibition (EMC 2011), University of California, Santa Barbara, California, June 22-24, 2011.

181. “Electrochemical Graphane Conversion Using E-Beam Evaporated Metals for Catalytic Enhancement”, Kevin Daniels, Biplob Daas, Rui Zhang, John Weidner, Christopher Williams, Tangali Sudarshan, MVS Chandrashekhar, 53rd Electronic Materials Conference and Exhibition (EMC 2011), University of California, Santa Barbara, California, June 22-24, 2011.

180. “Polariton Enhanced IR-Reflectivity of Epitaxial Graphene on SiC”, Biplob Daas, KM Daniels, S. Shetu, W.K Nomani, Goutam Koley, TS Sudarshan, MVS Chandrashekhar, 53rd Electronic Materials Conference and Exhibition (EMC 2011), University of California, Santa Barbara, California, June 22-24, 2011.


179. “Advance in Molecular Gas Sensing Studies Using Epitaxial Graphene”, B. K. Daas, W. K. Nomani, K. M.

Daniels, T. S. Sudarshan, Goutam Koley, A. Méndez Torres, M. V. S. Chandrashekhar, 2011 ANS Winter Meeting and Nuclear Technology Expo, Washington, DC, October 30-November 3, 2011.

2010 178. Characterization of Gallium Telluride Crystals Grown from Graphite Crucible, Krishna C. Mandal, Timothy

Hayes, Peter G. Muzykov, Ramesh Krishna, Sandip Das, Tangali S. Sudarshan and Shuguo Ma, Invited Talk, Proc. SPIE, 7805, 78050Q-1-10, 2010.

177. Radiation Detectors Based on 4H Semi-Insulating Silicon Carbide, Krishna C. Mandal, Ramesh Krishna, Peter G. Muzykov, Zegilor Laney, Sandip Das and Tangali S. Sudarshan, Proc. SPIE, 7805, 78050U-1-8, 2010.

176. “Step controlled epitaxy on 6H-SiC 1° off-cut substrate using Dichlorosilane” by I. Chowdhury, M.V.S. Chandrashekhar, T. Sudarshan, 2010 European Conference on Silicon Carbide and Related Materials (ECSCRM 2010), Oslo, Norway, Aug 29 – Sep. 2, 2010.

175. “High-Purity Semi-Insulating 4H-SiC Homoepitaxy at a High Growth Rate Using Dichlorosilane for High Power Devices,” by Iftekhar Chowdhury, MVS Chandrashekhar, Pawel Kaminski, Roman Kozlowski, Paul B. Klein, Joshua Caldwell, Kurt Gaskill, and Tangali Sudarshan, 52nd Electronic Materials Conference and Exhibition (EMC 2010), Notre Dame, Indiana, June 23-25, 2010.

174. “Graphene to Graphane: Novel Electrochemical Conversion and Possible Applications,” by Kevin Daniels, Biplob Daas, Rui Zhang, John Weidner, Christopher Williams, Tangali Sudarshan, and MVS Chandrashekhar, 52nd Electronic Materials Conference and Exhibition (EMC 2010), Notre Dame, Indiana, June 23-25, 2010.

173. “Processes Controlling the Carrier Lifetime in n- 4H-SiC Epilayers with Low Z1/2 Concentrations”, Paul Klein, Rachael Meyers-Ward, K.-K. Lew, Brenda VanMil, C.R. Eddy, D.K. Gaskill, A. Shrivastava, T.S. Sudarshan, 52nd Electronic Materials Conference and Exhibition (EMC 2010), Notre Dame, Indiana, June 23-25, 2010.

172. “Investigation of SiO2 Cap for Al Implant Activation in 4H-SiC”, Feng Zhao, Mohammad M. Islam, MVS Chandrashekhar, Tangali S. Sudarshan, 2010 MRS Spring Meeting, San Francisco, California, April 5-9, 2010. Also published in MRS Proceedings, 1246, 1246-B06-02, 2010

171. “Recent Developments in SiC Homoepitaxy Using Dichlorosilane for High Power Devices,” by Iftekhar Chowdhury, MVS Chandrashekhar; Paul B. Klein, Joshua D. Caldwell, Tangali Sudarshan, 2010 MRS Spring Meeting, San Francisco, California, April 5-9, 2010. Also published in MRS Proceedings, 1246, 1246-B04-06, 2010.

2009 170 “A Novel Etching Technique for Crystallographic Study of SiC Materials,” by F. Zhao, K. Daniels. Z. Laney,

T.S. Sudarshan, 2009 International Semiconductor Device Research Symposium, Washington, DC, December 2009.

169. “Embedded Sphere Method for Measuring Dielectric Breakdown in Polymers and Polymer Composites,” by Shiva Balasubramanian, Peter Muzykov, Hans-Conrad zur Loye, Tangali Sudarshan, and Harry J. Ploehn, 2009 IEEE CEIDP Conference, Session 4, General II, Virginia Beach, Virginia, October 20, 2009.

168. “CL/EBIC-SEM Techniques for Evaluation of Impact of Crystallographic Defects on Carrier Lifetime in 4H-SiC Epitaxial Layers,” by Serguei I. Maximenko, Jaime A. Freitas Jr., Yoosuf N. Picard, Paul B. Klein, Rachael L. Myers-Ward, Kok Keong Lew, Peter G. Muzykov, D. Kurt Gaskill, Charles R. Eddy, Tangali S. Sudarshan, Intl. Conf. on Silicon Carbide and Related Materials (ICSCRM 2009), Nurenberg, Germany, October 2009.


167. “Impact of Screw and Basal Plane Dislocations on the Reverse I-V Characteristics of 4H-SiC p-i-n Diodes,” by

F. Zhao, B. K. Daas, M. M. Islam, T. S. Sudarshan, (ICSCRM 2009), Nurenberg, Germany, October 2009.

166. “4H-SiC Optically-Activated p-i-n Diodes for Pulsed Power Applications,” by F.Zhao, M.M. Islam, P. Muzykov, and A. Bolotnikov, ibid

165. “Temperature Dependence of the Carrier Lifetime in 4H-SiC Epilayers,” by P. B. Klein, et. al., ibid

164. “Study of SiC High Growth Rate Epitaxy using Dichlorosilane Precursor for High Power Devices,” by I. A. Chowdhury, et al., ibid.

163. “Study of 4H-SiC/SiO2 Interface Traps in n-Type Nitrided MOS Capacitors Using Thermally Stimulated Current and Capacitance Voltage Methods,” by Peter Muzykov, Sarit Dhar, Sei-Hyung Ryu, Anant Agarwal, Tangali Sudarshan, Electronic Materials Conference 2009, Pennsylvania State University, State College, PA, June 23-26, 2009.

162. “Direction-controlled Growth and Characterizations of Indium Nitride Nanowires”, Z. Cai, S. Garzon, D. Veereddy, X. Tao, P. Muzykov, X. Li, T. S. Sudarshan, Richard A. Webb, and Goutam Koley, poster presentation at the Spring MRS Conference, San Francisco, April 14, 2009.

161. “Temperature Dependence of the Minority Carrier Lifetime in n- Epilayers of 4H-SiC,” by Paul Klein, Amitesh Shrivastava, and Tangali Sudarshan, Session W21: Dopants and Defects in Semiconductors IV, 2008 APS March Meeting, March 2009, Pittsburgh, Pennsylvania.

2008 160. “Study of Degradation in SiC Bipolar Junction Transistors (BJTs),” P.G. Muzykov, T. A. Rana, Qingchun (Jon)

Zhang, Anant Agarwal, and T.S. Sudarshan, ECSCRM, Barcelona, Spain, Sept. 7-11, 2008.

159. “Two-branch boron diffusion from gas phase in n-type 4H-SiC”, A.V. Bolotnikov, P.G. Muzykov, A.K. Agarwal, Q. Zhang, and T.S. Sudarshan, ECSCRM, Barcelona, Spain. September 7-11, 2008.

158. “Formation Mechanism of Inverted Pyramid Defects in 4H-SiC Epilayers,” A. Shrivastava, P. Muzykov, T. S. Sudarshan, ECSCRM, Barcelona, Spain, Sept. 7-11, 2008.

157. “Characterization of In-Grown Stacking Faults in 4H-SiC Epitaxial Layers by Cathodoluminescence,” S. Maximenko, J. A. Freitas, A. Shrivastava, and T. S. Sudarshan, ibid.

156. “Long Carrier Lifetime in 4H-SiC Epilayers using Chlorinated Precursors, A. Shrivastava, P. B. Klein, E. Q. Glaser, J. D. Caldwell, and T. S. Sudarshan, ECSCRM, Barcelona, Spain, Sept. 7-11, 2008.

155. “Degradation Mechanisms in SiC Bipolar Junction Transistors, Qingchun (Jon) Zhang, Charlotte Jonas, Anant Agarwal, Peter Muzykov, Tangali Sudarshan, Bruce Geil, and Charles Scozzie,” Device Research Conference (DRC 2008), University of California, Santa Barbara, CA, June 23-25, 2008.

154. “Investigation of Leakage Current and Breakdown Issues in 4H-SiC Schottky Diodes without Edge Termination and Passivation,” P. Muzykov, A. Bolotnikov, M. Zimmerman, and T. S. Sudarshan, MRS Spring 2008, Symposium D, D7.13, San Francisco, CA, March 24-28, 2008.

2007 153. “The Impact of Basal Plane Dislocations on Degradation Phenomena in 4H-SiC NPN Bipolar Junction

Transistors,” R. Kennedy, Q. Zhang, C. Capell, A. Burk, A. Agarwal, and T. Sudarshan, ICSCRM 2007, Tu-3B-4, Otsu, Japan, Oct. 14-19, 2007.


152. “Investigation of Triangular Defects in 4H-SiC 4º off cut (0001) Si Face Epilayers grown by CVD,” A.

Shrivastva, P. Muzykov, B. Pearman, S. Michael Angel, and T. S. Sudarshan, ICSCRM, Otsu, Japan, Oct. 14-19, 2007.

151. “Bulk SiC Crystal Growth at Constant Growth Rate Utilizing a New Design of Resistive Furnace,” Eugene Tupitsyn, Alexander Galyukov, Maxim Bogdanov, Alexey Kulik, Mark Ramm, Yuri Makarov, and Tangali Sudarshan, ICSCRM, Otsu, Japan, Oct. 14-21, 2007.

150. “Variations in the Measured Carrier Lifetimes of n-4H-SiC Epilayers,” P. B. Klein, J. D. Caldwell, Amitesh Shrivastava, and T. S. Sudarshan, ICSCRM, Otsu, Japan, Oct. 14-21, 2007.

149. “An Investigation of the Epitaxial 4H-SiC Growth Rate Efficiency of the Epigress VP508,” D. K. Gaskill, K. K. Lew, B. VanMil, R. Myers-Ward, R. Holm, C. Eddy, Jr., L. Wang, J. Caldwell, and T. S. Sudarshan, 13th International Conference on Vapor Growth and Epitaxy, Salt Lake City, Utah, Aug. 12-17, 2007.

2006 148. “Comparison of the Graphite and BN/AIN Annealing Caps for Ion Implanted SiC,” A. Derenge, A. Bolonikov,

T. S. Sudarshan, R. D. Vispute, S. S. Hullavarad, and S. Dhar, 6th European Conference on Silicon Carbide and Related Materials, ECSCRM 2006, Newcastle upon Tyne, UK, September 3-7, 2006.

147. “Formation Mechanism of Half-Loop Array Defect in Silicon Carbide Homo-Epilayers,” Zehong Zhang, Robert Stahlbush, Pirouz Pirouz, Amitesh Shrivastava, Tangali Sudarshan, 48th TMS Electronic Materials Conference, Pennsylvania, June 28-30, 2006.

146. “Intrinsic defects in high purity semi-insulating 6H SiC,” D. V. Savchenko, E. N. Kalabukhova, S. N. Lukin, Tangali S. Sudarshan, Yuri Khlebnikov, William C. Mitchel, S. Greulich-Weber, 2006 Spring MRS Meeting, .Symposium B, Volume 911, #0911-B05-05, San Francisco, CA, April 2006.

145. “Microwave Photoconductivity Decay Mapping and Investigation of Lifetimes in 4H-SiC Epitaxial Layers,” Joshua D. Caldwell, Aron Pap, Amitesh Shrivastava, Zehong Zhang, Paul B. Klein, Tibor Pavelka, Tangali Sudarshan, Orest J. Glembocki, Karl D. Hobar, and Fritz Kub, Symposium B: Silicon Carbide – Materials, Processing, and Devices, MRS Spring Meeting, B5.29, San Francisco, CA, April 17 – April 21, 2006.

144. "Comparison of Graphite and BN/AlN Annealing Caps for Ion Implanted SiC," with K. Jones and A. Bolotnikov, 6th European Conf. on SiC and Related Materials, Newcastle upon Tyne, Sept. 4-7, 2006.

143. “Growth of Low Basal Plane Density SiC Epilayers with Minimized Surface Depressions”, with Zhang, MRS 2006, San Francisco, Apr17-21, 2006.

142. “Intrinsic Defects in High Purity Semi-insulating 6H SiC” with D. V. Savchenko, E. N. Kalabukhova, S. N. Lukin, Y. I Khlebnikov, and W. C. Mitchel, MRS 2006, San Franciso, April 2006.

2005 141. “Nanoscale Deep Level Defect Correlation with Schottky Barriers in 4H-SiC/Metal Diodes” with S.

Tumakha, L. M. Porter, D.J. Ewing, Q. Wahab, X.Y. Ma, T.S. Sudarshan, and L.J. Brillson, 11th International Conference on Silicon Carbide and Related Materials, Pittsburg, September 2005.

140. “Fundamental Limitations of SiC PVT Growth Reactors with Cylindrical Heaters” with R. Drachev, E. Deyneka, C. Rhodes, J. Schupp, ibid.

139. “Stability of Thick Layers Grown on Equations (1-100) and (11-20) Orientations of 4H-SiC” with M. Syvajarvi, R. Yakimova, G. R. Yazdi, A. Arjunan, and E. Toupitsyn, ibid.


138. “Effect of Crystal Defects on Reverse I-V Characteristics of 4H-SiC APD” with S. Soloviev, P. Sandvik, S. Arthur, K. Matocha, S. Maximenko, ibid.

137. “Recombination Behavior of Stacking Faults in SiC p-i-n Diodes” with S. Maximenko and P. Pirouz, ibid.

136. ”Open Core Dislocations and Surface Energy of SiC” with S. Maximenko and P. Pirouz, ibid.

135. “A Study of Inhomogeneous Schottky Diodes on n-type 4H-SiC” with D.J. Ewing, L.M. Porter, Q. Wahab, S. Tumakha, L.J Brillson, X.Y. Ma, ibid.

134. “Growth of Low Basal Plane Dislocation Density SiC Epilayers”, with Zhang, ibid.

133. “Why Only Some Basal Plane Dislocations Get Converted to Threading Edge Dislocations during 4H-SiC Homo-epitaxy?”, with Zhang and Shrivastava, ibid.

132. “Performance of SiC PiN Diodes Fabricated on Basal Plane Dislocation-free SiC Epilayers”, with Zhang, Grekov, Sadagopan, Maximenko, ibid.

131. “Bulk Growth of Single Crystal Silicon Carbide” with S. Maximenko, 3rd International Conference on Materials for Advance Technologies, Singapore, July 2005.

2004 130. “Development of pattrns for nanoscale strain measurements: I. Fabrication of imprinted Au webs for

polymeric materials,” by S. A. collette, M. A. Sutton, P. Miney, A. P. Reynolds, Xiaodong Li, P. E. Colavita, W. A. Scrivens, Y. Luo, T. Sudarshan, P. Muzykov, and M. L. Mrick, Nanotechnology, 15, 1812-1817, 2004.

129. “A Study of 6H-seeded 4H-SiC Bulk Growth by PVT,” with E. Tupitsyn, A. Arjunan, R. Bondokov, and R. Kennedy, European Conference on Silicon Carbide and Related Materials (ECSCRM2004), Bologna, Italy, September 2004.

128. “CVD Growth and Characterization of 4H-SiC Epitaxial Film on (11-20) As-cut Substrates,” Z. Zhang, Y. Gao, A. Arjunan, E. Toupitsyn, P. Sadagopan, and R. Kennedy, European Conference on Silicon Carbide and Related Materials (ECSCRM2004), Bologna, Italy, September 2004.

127. “Study of Forward Voltage Drift in Diffused SiC PIN Diodes Doped by Al or B,” S. Maximenko, S. Soloviev, A. Grekov, A. Bolotnikov, and Y. Gao, European Conference on Silicon Carbide and Related Materials (ECSCRM2004), Bologna, Italy, September 2004.

126. “Identification of Dislocations in Diffused 4H-SiC PIN Diodes using EBIC” with S. Maximenko and S. Soloviev 46th Electronic Materials Conference (TMS) , Notre Dame University, Notre Dame, Indiana, June, 2004.

125. “Fundamentals of SiC Bulk Growth Process and Defect Generation Mechanisms,” with R. Bondokov and A. Arulchakkaravarthi, International Workshop on Crystal Growth and Characterization of Technologically Important Materials, Chennai, India, February 2004.

B.2. INTERNATIONAL CONFERENCE PROCEEDINGS – Past Conferences 124. “Modification of 6H-SiC Surface Defect Structure during Hydrogen Etching,” with R. Bondokov, N.

Tipirneni, and D. Cherednichenko, International Conference on Silicon Carbide and Related Materials 2003 (ICSCRM2003) Lyon, France, October 2003.

123. “Formation of Stacking Faults in Diffused SiC p+/n-/n+ and p+/p-/n+ Diodes,” with S. Soloviev and D. Cherednichenko, ICSCRM2003 Lyon, France, October 2003.

122. “Nondestructive Defect Characterization of SiC Epilayers and its Significance for SiC Device Research,” with X. Ma, ICSCRM2003 Lyon, France, October 2003.


121. “Nondestructive Defect Delineation and Mapping in SiC Substrate and Epitaxial Film,” with X. Ma, Y. Gao, R. Bondokov, S. Maximenko, and T. Lashkov, American Physical Society Austin TX, March 2003.

120. “Electrical Characterization of Ni/Porous SiC/n-SiC Structure”, by Grekov, Stanislav I. Soloviev, T. Das, Tangali S. Sudarshan, 4th European Conference on Silicon Carbide and Related Materials, Linkoping, Sweden, 2002.

119. “Thermal Stress as the Major Factor of Defect Generation in SiC during PVT Growth,” with D.I. Cherednichenko, R.V. Drachev, I.I. Khlebnikov, and X. Deng, Mater. Res. Soc. Symp. 724: 131-136, 2003.

118. “Influence of a Diffraction Vectors Noncomplanarity on the Double Crystal Rocking Curves Parameters,” with P. Muzykov, A. Razumovsky, and M. Tchernov. International Conference on Modern methods of diffraction data analysis (x-ray topography, diffraction, and electron microscopy) New Novgorod, Russia, p. 84-86, 18-20 November 2002.

117. “Comparative Characterization of Differently Oriented SiC Wafers,” with P.G. Muzykov, Y.I. Khlebnikov, I.I. Khlebnikov, R.T. Bondokov, A.E. Grekov, S.I. Maximenko, and S.I. Soloviev, 44th Electronic Materials Conference (TMS), Santa Barbara, CA June 26, 2002.

116. “Modeling of In-situ Off-axis Seeding Surface Preparation Conditions for SiC PVT Growth," with R.V. Drachev, D.I. Cherednichenko, and I.I. Khlebnikov, TMS, 2002.

115. "Effect of Substrate Resistivity on Formation of Porous SiC," with T. Das, S. Soloviev, J. Bai, and P.I. Gouma, TMS, 2002.

114. "High Voltage Engineering Issues in Field Emission Displays, " with X. Ma and P.G. Muzykov, 12th International Symposium on High Voltage Engineering, India, pp. 485-88, August 2001.

113. "Surface Evaluation of 6H-SiC after Doping by Diffusion, " with Y. Gao, S. Soloviev, X. Wang, and C.C. Tin, Mater. Res. Soc. Symp. 680E: April, 2001.

112. "Comparison of Current – Voltage Characteristics of N and P Type SiC Schottky Diodes," with Q. Zhang, V. Madangarli, and Y. Gao, Mater. Res. Soc. Symp. 640: H5.21, 2001.

111. "Point and Planar Defect Formation in SiC during PVT Growth," with Y. Khlebnikov, R.V. Drachev, C.A. Rhodes, D.I. Cherednichenko, and I. Khelbnikov, Mater. Res. Soc. Symp. 640: H5.1, 2001.

110. "Dislocation Content of Etch Pits in Hexagonal Silicon Carbide," with I. Khlebnikov, M.B. Lari, Y. Khlebnikov, and R.T. Bondokov, Mater. Res. Soc. Symp. 640: H5.4, 2001.

109. "One of Many Sources of Defect Generation in SiC," with Y. Khlebnikov, I. Khlebnikov, and C. Wood, Mater. Res. Soc. Symp. 640: H5.3, 2001.

108. "Al/Ni and Al/Ti Ohmic Contacts to p-type SiC Diffused Layer," with S. Soloviev, Y. Gao, J.R. Williams

and J. Crofton, Mater. Res. Soc. Symp. 640: H5.19, 2001.

107. "Selective Doping of 4H-SiC by Aluminum/Boron Co-Diffusion," with Y. Gao, S.I. Soloviev, X. Wang, and C.C. Tin, Mater. Res. Soc. Symp. 640: H6.9, 2001.

106. "High Field Insulation Relevant to Vacuum Microelectronic Devices," with X. Ma and P.G. Muzykov, invited talk International Symposium on Discharges and Electrical Insulation in Vacuum, Xi'an, P.R. China, Oct. 2000.

105. “Thick Oxide Layers on N and P SiC Wafers By A Depo-Conversion Technique”, with Q. Zhang, I. Khlebnikov, V. Madangarli, and S. Soloviev, 1999 Spring MRS meeting, San Francisco, CA, April 1999.

104. “High Voltage Schottky Barrier Diodes on P-Type SiC using Metal-Overlap on a Thick Oxide Layer as Edge Termination”, with Q. Zhang, S. Soloviev, V. Madangarli, and I. Khlebnikov, 1999 Spring MRS meeting, San Francisco, CA, April 1999.

103. "Flashover Performance of Thin-Wall Spacers in Field Emission Displays," with X. Ma, IS&T/SPIE's Electronic Imaging 1999, San Jose, CA 25-29 January 1999.


102. “Structural Defect Visualization and Oxide Breakdown in SiC Wafers after Thermal Oxidation”, with S. Soloviev, I. Khlebnikov, and V. Madangarli, 2nd European Conference on Silicon Carbide and Related Materials (ECSCRM’98), Montpelier, France, September, 1998.

101. "Investigations to Simulate the High Field Characteristics of Gate to Cathode Gaps in FEDs," with P.G. Muzykov, X. Ma, and D.I. Cherednichenko, International Vacuum Microelectronics Conference, Asheville, North Carolina, p. 73-74, June, 1998.

100. "High Field Characteristics of Thin Film Metal Electrodes Relevant to Field Emission Displays," with X. Ma and P.G. Muzykov, International Vacuum Microelectronics Conference, Asheville, North Carolina, p. 59-60, June 1998.

99. "High Field Characteristics of Insulators in the Micrometric Regime Relevant to Field Emission Displays," with X. Ma, International Vacuum Microelectronics Conference, Asheville, North Carolina, p. 57-58, June 1998.

98. "Bulk Breakdown in AlGaN/GaN HFETs," with G. Gradinaru and M.A. Khan, 1998 Spring Mat. Res. Soc. Symp. Proc., 512: 309-14, 1998.

97. "A Technique for Rapid Thick Film SiC Epitaxial Growth," with I. Khlebnikov, V. Madangarli, and M. Capano, 1997 Fall MRS Symposium, Boston, Dec. 1-5, 1997.

96. "SiC Epitaxial Growth on Carbon," with I. Khlebnikov and V. Madangarli, ibid.

95. "Correlation between Oxide Breakdown and Defects in SiC Wafers," with S. Soloviev, I. Khlebnikov, and V. Madangarli, ibid., pp. 351-55.

94. "Power Limitation due to Premature Breakdown in AlGaN/GaN HFETs," with G. Gradinaru and M.A. Khan, ibid.

93. "Comparison of High Field Characteristics of SiO2 vs. AlN Gate Insulators in 6H SiC MOS Capacitors," with V.P. Madangarli and C.C. Tin, ibid., pp.345- 350.

92. "The Response of High Voltage 4H-SiC P-N Junction Diodes to Different Edge Termination Techniques" with T.N. Oder, C.C. Tin, J.R. Williams, T. Issacs-Smith, and V. Madangarli, ibid., pp.101- 106.

91. "Observation of Bulk Defects in SiC Crystals," with Y.I. Khlebnikov. International Semiconductor Device Research Symposium, Charlottesville, VA, Dec. 10-13, 1997.

90. "High Pinch-off Voltage AlGaN-GaN Heterostructure Field Effect Transistor," with M.S. Shur, Q. Chen, J. Yang, R. Gaska, M.A. Khan, A. Ping, I. Adesida, and V.P. Madangarli, ibid., Dec. 1997.

89. "Prebreakdown and Breakdown Characteristics of Micrometric Vacuum Gaps between Broad Area Electrodes," with M. McLester and X. Ma, IEEE Conf. on Elec. Insul. and Dielectric Phenomena, paper 7B-6, Minneapolis, MN, Oct. 1997.

88. "High Field Breakdown Characteristics of Micrometric Gaps in Vacuum," with X. Ma and J.D. Kim, 10th Int. Vacuum Microelectronics Conference, Kyongju, Korea, Aug. 1997.

87. “A Non-Destructive Technique For High Field Characterization Of Gate Insulators In SiC MOS Capacitors,” with V.P. Madangarli, Int. Conf. on SiC and III-N '97, Stockholm, Sweden, August 31st - September 5, 1997.

86. “Rapid Anodic Oxidation Of 6H-SiC,” with Y. Khlebnikov, V.P. Madangarli, and M.A. Khan, Int. Conf. on SiC and III-N '97, Stockholm, Sweden, August 31st - September 5, 1997.

85. “Thick Film SiC Epitaxy For ‘Filling Up’ Micropipes,” with I. Khlebnikov and V.P. Madangarli, Int. Conf. on SiC and III-N '97, Stockholm, Sweden, August 31st - September 5, 1997.

84. "Minority Carrier Lifetime Measurements in 6H-SiC using the Photoconductive Decay Technique," with W. Zhou, I. Khlebnikov, M.A. Capano, and W.C. Mitchel, Int. Conf. on SiC and III-N '97, Stockholm, Sweden, August 31st - September 5, 1997.

83. “Defect Formation during SiC Crystal Growth,” with I. Khlebnikov, Y. Khlebnikov, E. Solodovnik, and V. Madangarli, The 39th Electronic Materials Conference, Fort Collins, Colorado, 1997.


82. "Surface Flashover and Preflashover Phenomena of Solid Dielectrics in Vacuum," T.S. Sudarshan, invited talk, XVII Int'l Symp. on Discharges and Electrical Insulation in Vacuum, Berkeley, CA, Volume I: 381-90, July 1996.

81. "Electric Field Breakdown Mechanisms in High Power Epitaxial 4H-SiC p-n Junction Diodes," with C.C. Tin, V. Madangarli, E. Luckowski, J. Casady, T. Isaacs-Smith, J.R. Williams, R.W. Johnson, and G. Gradinaru. Proceedings of the 1996 IEEE International Conference on Semiconductor Electronics, Malaysia, 1996.

80. "High Electric Field Breakdown of 4H-SiC PN Junction Diodes", with C.C. Tin, V. Madangarli, R. Hu, E. Luckowski, J. Casady, T. Isaacs-Smith, G. Gradinaru, and R.W. Johnson, Materials Research Society Symposium Proceedings, San Francisco, CA, 423: 111-115, April 1996.

79. "Characterization of 4H-SiC MOS Capacitors By a Fast-Ramp Response Technique," with V.P. Madangarli, G. Gradinaru, C.C. Tin, R. Hu, and T. Isaacs-Smith, Materials Research Society Symposium, San Francisco, CA, 423: 99-104, April 1996.

78. "High Field/High Temperature Performance of Semi-Insulating Silicon Carbide," with G. Gradinaru, et al., The 1st European Conference of Silicon Carbide and Related Materials (ECSRM), Heraclion, Crete, Greece, Oct. 6-7, 1996.

77. "Electro-Optical Investigation of Micropipes in Silicon Carbide," with M. Helmi and G. Gradinaru, MRS 1996 Fall Meeting, Symposium E - Defects in Electronic Materials, Boston, MA, Dec. 2-6, 1996.

76. "Temperature Effects in High Resistivity Silicon Carbide under Pulsed Electric Fields," with G. Gradinaru, et al., 3rd International High Temperature Electronics Conference (HiTEC'96), Albuquerque, NM, 1: 1125-1130, June 9-14, 1996.

75. “4H SiC CVD Epitaxial Growth, In Situ Doping and P-N Junction Fabrication”, with R. Hu, C.C. Tin, E. Luckowski, T. Isaacs-Smith, J. Casady, V. Madangarli, and G. Gradinaru, American Physical Society (APS), St. Louis, Missouri, March 1996.

74. "Electro-Thermal Stress and High Electric Field Effects in CVD-Grown 4H-SiC P-N Junction Diodes," with C.C. Tin, et al., 1st Conference on Commercial Development of Space, Albuquerque, NM, Jan. 7-11, 1996.

73. “AlN for 6H-SiC Power Devices”, with C.C. Tin, Y. Song, T. Issacs-Smith, and V. Madangarli, AIP Conference Proceedings 387: 825, 1995.

72. “A Compact Blumlein PFN with Optimized Performance Index,” with V. Madangarli, S. Liu, and C.R. Li, 10th IEEE Pulsed Power Conference, Albuquerque, NM, Digets of Technical Papers, Vol 2, pp. 1400-1405, June 1995.

71. “High Field Activation of Micropipes in High Resistivity Silicon Carbide,” with G. Gradinaru, G. Korony, W. Mitchel, and R.H. Hopkins, presented at 37th Electronic Material Conference (EMC) Charlottesville, VA, June 21-23, 1995.

70. "Breakdown Damages of Photoconductive Silicon at High Fields," with G. Gradinaru and G. Korony, SPIE '94 - Optically Activated Switching IV, Boston, MA, Nov. 1994.

69. "Insulating Properties of Semi-Insulating Silicon under High Field Excitation," with Gradinaru and Korony, 4th Int. Conf. on Properties and Applications of Dielectric Materials, Brisbane, Australia, July 1994.

68. "High Field Microplasma Activity along Alumina Surfaces in Vacuum," with Li, Ibid.

67. "Influence of Electrode Geometry on High Field Characteristics of Silicon Wafers used in PCPS Applications," with Madangarli, Gradinaru, and Korony, 21st IEEE Intl. Power Modulator Symposium, p. 128-31, June 1994.

66. "High Field Limitations of Photoconductive Silicon," with Gradinaru and Korony, Ibid., pp. 104-07.

65. "Investigations of High Field Effects in Silicon Carbide," with Gradinaru, Korony, Mitchel, and Nunnally. Proc. of Second Intl. High Temperature Electronics Conference, 2: 147-52, Charlotte, NC, June 1994.


64. "Inhomogeneous Charging Characteristics of Polycrystalline Alumina Surfaces," with T. Asokan, Proc. 16th Int. Symp. on Discharges and Electrical Insulation in Vacuum, St. Petersburg, Russia, May 1994.

63. "Influence of Dielectric Surface Properties on the Generation of Surface Microplasmas," with Li, Ibid.

62. "Surface Flashover Sensitivity of Silicon in Vacuum," with Gradinaru and Korony, Ibid.

61. "Spectroscopic Observations of Light Emission from Surface Flashover of Insulators under HV Stress," with Sundararaman, Li, and Goode, Annual Report, CEIDP (Poconos), p. 293-98, Oct. 1993.

60. "Surface Flashover Performance of Chemically Etched Polycrystalline Alumina," with Mitra, ibid., p. 318-23.

59. "Lattice Strain and its Relationship with the Surface Flashover Properties of Polycrystalline Alumina," with T. Asokan, 8th Int. Symp. on High Volt. Engr, Yokohama, Japan, 1: 315-18, Aug., 1993.

58. "A Review on the Breakdown Limitation of Photoconductive Semiconductor Power Switches," with G. Gradinaru, 9th IEEE Pulsed Power Conference, Albuquerque, NM, pp. 645-49, June 1993.

57. "Comparison of 'Dark' Current Characteristics of Cylindrical vs. Wafer Configurations of Photoconductive Silicon," with V.P. Madangarli, G. Gradinaru, C.R. Li, and M.R. Vaidya, ibid. p. 676.

56. "The High Field Semiconductor-dielectric System, a Special Case of the Classical Two-insulator System," with G. Gradinaru, Annual Report, CEIDP, Victoria, Canada, p. 435-440, Oct. 1992.

55. "Prebreakdown and Breakdown Luminosity of Large Band Gap Insulators under Pulsed Electrical Excitation," with T. Asokan, Ibid., p. 441-47.

54. "Some Particularities of the Surface Flashover in Silicon-vacuum Systems," with G. Gradinaru, and V.P. Madangarli, Proc. 15th Int. Symp. on Discharges and Electrical Insulation in Vacuum Darmstadt, Germany, p. 208-212, 1992.

53. "Importance of Surface Treatment on the Surface Flashover Properties of Alumina Ceramics," with T. Asokan, Ibid., p. 181-85.

52. "Test Procedure for Surface Flashover Investigations of Dielectric Materials," with T. Asokan, Ibid., p. 186-90.

51. "Surface Permittivity Distinct from Bulk - Ramifications to Surface Breakdown: A Novel Concept," with J. Wang, Ibid.,pp. 232-36.

50. "Streak Photography of Insulator - surface Flashover under Pulsed Excitation," with T. Asokan and G. Morris, Conf. record of 20th Intl. Power Modulator Symposium, p. 336-39, June 1992.

49. "Improved Voltage Holdoff Capability of Photo-conductive Silicon in SF6 Environment," with V.P. Madangarli, G. Gradinaru and F.J. Zutavern, p. 297-300, Ibid.

48. "A Physical Model of the Electrical Breakdown in High Field Semiconductor-dielectric Systems," with G. Gradinaru, p. 331-35, Ibid.

47. "Photonic Emissions Associated with a Dielectric Surface under High Electric Stresses," Invited Paper, Interdisciplinary Conference on Dielectrics: Properties, Characterization, Applications, Organized by Societe Francaise Duvide, Antibes, France, p. 224-33, March 1992.

46. "Validation of a Novel Electrode System to Study the Surface Flashover Phenomena of Insulators," with Asokan, Conf. on Electrical Insulation and Dielectric Phen., p. 76-82, Oct. 1991.

45. "Pulsed Voltage Pre-breakdown Observations on Silicon in Vacuum," with Gamble and Faust, Conf. on Electrical Insulation and Dielectric Phen. p. 533-38, Oct. 1990.

44. "An SEM Technique for Investigating the Insulating Properties of Dielectric Surfaces," with Bommakanti and Le Gressus, IEEE Conf. on Electr. Insuln. and Dielectric Phen., p. 219-24, Oct. 1990.

43. "Pulsed Surface Flashover Performance of Monocrystalline SiO2 Bridged Vacuum Gaps," with Bommakanti and Le Gressus, IEEE XIV Int. Symp. on Discharges and Electrical Insulation in Vacuum, Santa Fe, NM, p. 377-80, Sept. 1990.


42. "Flashover: Method of Investigations and Mechanisms," with C. Le Gressus and C. Blaise, Ibid., Santa Fe, NM, p. 299-306, Sept. 1990.

41. "Effect of Leakage Current and Light Emission on Surface Flashover along Silicon in Vacuum," with S.H. Nam, 6th Intl. Symp. on High Voltage Engineering, New Orleans, Aug. 1989.

40. "Simulation of Avalanches in a Composite Dielectric Medium," with Lam and Mahajan, Ibid

39. "Influence of Insulator Surface Finish on the Pulsed Surface Flashover performance," with Bommakanti, 7th Pulsed Power Conference, Monterey, CA, p. 828-31, June 1989.

38. "Pre-breakdown (leakage) and Breakdown Currents and Light Emission Related to Surface Flashover Along Silicon in Vacuum," with Nam, p. 362-64, Ibid.

37. "Correlation Between Insulator Surface and dc Flashover Characteristics in Vacuum," IEEE Conf. on Electrical Insulation and Dielectric Phenomena, Ottawa, p. 53-59, Oct. 1988.

36. "Observation of Three Distinct Phases Leading to Pulsed Surface Flashover Along Silicon in Vacuum," with S.H. Nam, 13th Int. Symp. on Discharges and Electrical Insulation in Vacuum, Paris, 1988.

35. "Analysis and Design of a Traveling Wave Feedthrough-Electric Field and Insulator Material Considerations," with Bommakanti, 6th Pulse Power Conference, Arlington, VA, p. 200-204, June l987.

34. "A Collision-Ionization Model for DC Surface Flashover Across Insulator-Vacuum Interfaces," with Jaitly, Ibid., p. 64-68.

33. "Avalanches near a Dielectric Spacer in High Pressure Nitrogen Gas," with Mahajan, Ibid., p. 191-194.

32. "Avalanches near a Dielectric Spacer in Nitrogen Gas," with Mahajan and Dougal, 5th Int. Symp. on Gaseous Dielectrics, Knoxville, May l987.

31. "Invited paper: 45 Degree Insulator Surface Flashover; A Review and New Results," with Thompson, Arnold, and Dougal. 12th Int. Symp. on Discharges and Electrical Insulation in Vacuum. Israel, p. 23l-240, September 1986.

30. "Flashover at Dielectric Interfaces: The Interaction of Surface and Volume Processes," with Kraft and Dougal, IEEE Intl. Symposium on Electrical Insulation, Washington D.C., p. 230-234, June 1986.

29. "A Model for Highly Overstressed Vacuum Breakdown," with Warren, Dougal and Thompson, 5th IEEE Pulsed Power Conference, Washington, June 1985.

28. "Partial Discharge Characteristics in Layered Barium Titanate Structures," with D. Chang, R. Dougal, N. Chan, B. Rawal and J.E. Thompson, IEEE Conf. on Electrical Insulation and Dielectric Phenomena, p. 38-45, October 1984.

27. "Measurements of Pulsed Insulator Surface Flashover in Vacuum," with P.A. Arnold, R.A. Dougal and J.E. Thompson, 11th Int. Symp. on Discharges and Electrical Insulation in Vacuum, East Germany, 1984.

26. "Role of Surface Charging in the Breakdown of 45 Degree Insulators Subjected to High Voltage Nanosecond Excitation," with P. Arnold, C. Courtney, et al., IEEE Int. Symp. on Electrical Insulation, Montreal, Canada, p. 222-225, June 1984.

25. "Breakdown Measurements for Overstressed Vacuum Gaps," with F.T. Warren, J.E. Thompson and R.A. Dougal, 16th Power Modulator Symposium, p. 79-70 June 1984.

24. "Voltage Recovery Time of a Vacuum Switch," with C.L. McDonald, R.A. Dougal and J.E. Thompson, Ibid., p. 91-94.

23. "Liquid Metal Wetting of Metals using a Plasma Discharge Technique," with Lim, Dougal and Hefley, IEEE Int. Conf. on Plasma Science, p. 19, May 1984.

22. "The Simultaneous Measurement of Light and Current Pulses in Liquid Dielectrics," with M. Hanna, J.E. Thompson, and E. Forster, Conference on Electrical Insulation and Dielectric Phenomena, Pocconos, Pennsylvania, pp. 245-250, October l983.


21. "Pre-breakdown and Breakdown Phenomena of Dielectric Surfaces in Vacuum and N2 Gas Stressed by 60 Hz Voltages," with J. Lewis, J.E. Thompson, D. Lee and R.A. Dougal, Conf. on Interfacial Phenomena in Practical Insulating Systems, NBS, Washington, DC, pp. 12-18, Sept. l9-20, l983.

20. "Breakdown and Recovery Measurements for Low Pressure Pulsed Gaps," with T. Warren, J. Thompson, C. McDonald and R. Dougal. 4th Int. Pulsed Power Conference, Albuquerque, NM, p. 216-222, June l983.

19. "Metal Ion Source for Metallic Surface Metallurgy," with Xu Zhong, et al., l0th International Symposium on Discharges and Electrical Insulation in Vacuum, Columbia, SC, p. 368-373, Oct. l982.

18. "Current Evolution in a Pulsed Overstressed Radial Vacuum Gap," with F.T. Warren, J.E. Thompson and R.L. Boxman, l0th Int. Symp. on Disch. and El. Ins. in Vac., Columbia, SC, p. 43-53, Oct. l982.

17. "Breakdown Time of a Triggered Vacuum and Low Pressure Switch," with JE. Thompson, J.M. Wilson and R.L. Boxman. l0th International Symposium on Discharges and Electrical Insulation in Vacuum, Columbia, SC, p. 268-27l, October l982.

16. "Prebreakdown Conduction Measurements in Vacuum Gaps Bridged with Alumina Insulators," with R. Lee, G.R. Nagabhusana, and J.E. Thompson, IEEE Electrical Insulation Conference, Philadelphia, p. l03-l07, l982.

15. "Surface Flashover Measurements in Vacuum and N2 Gas," with H. Rhinehart, J.E. Thompson, G.R. Nagabhusana, and R. Lee, Conference on Electrical Insulation and Dielectric Phenomena, Whitehaven, PA., p. 424-29, October l98l.

14. "Triggered Vacuum Switch Breakdown and Conduction Characteristics," with F.T. Warren, J.M. Wilson and J.E. Thompson, 3rd Int. Pulsed Power Conference, Albuquerque, New Mexico, p. 36-39, June l98l.

13. "Measurement of Surface Electric Fields and Charge for Pulsed 45 Insulators," with P. Arnold, D. Chang, and J.E. Thompson, 3rd Int. Pulsed Conference, Albuquerque, New Mexico, p. 24-27, June l98l.

12. "The Role of Microparticles in Pulsed Vacuum Gap Breakdown," with M. Butner, J.E. Thompson and G. Wierzba, 9th Int. Symp. on Discharges and Electrical Insulation in Vacuum, Eindhoven, The Netherlands, Sept. l980.

11. "Insulator Surface Flashover," with J.E. Thompson, J. Lin, M. Kristiansen, K. Mikkelson, H. Rhinehart, 9th Int. Symp. on Discharges and Electrical Insulation in Vacuum, Eindhoven, The Netherlands, Sept. l980.

10. "Design of a Triggered Vacuum Gap," with J.E. Thompson, F.T. Warren, Jr. and R.G. Fellers, 14th Pulse Power Modulator Symposium, Orlando, Florida, p. 85-9l, June l980.

9. "Electro-Optical Measurements of Insulator Preflashover Fields in Vacuum and Gas," with J.E. Thompson and H. Rhinehart, l980 Region 3 Conference and Exhibit, Nashville, Tenn., p. 296-99, April l980.

8. "The Effects of Water Immersion, Voltage and Frequency on the Electric Strength of Miniature XLPE Cables," with J. Densley and A. Bulinski, Conf. on Electrical Insulation and Dielectric Phenomena, p. 469-479, l979.

7. "Electro-Optical Measurement of Insulator Surface Preflashover Fields in Vacuum," with J.E. Thompson and D. Hyslop, Ibid. pp. 334-44.

6. "The Prediction of Insulation Life at Cryogenic Temperatures," with A.T. Bulinski and R.J. Densley, Conference on Electrical Insulation and Dielectric Phenomena, p. 575-584, l979.

5. "The Partial Discharge and Breakdown Characteristics of Insulating Tapes Immersed in Liquid Nitrogen," with A.T. Bulinski and R.J. Densley, l978 Conference on Electrical Insulation and Dielectric Phenomena, National Academy of Sciences-National Research Council, USA, p. 390-95, l978.

4. "Partial Discharges in Polymeric Insulation Systems at Cryogenic Temperatures," with A.T. Bulinski, R.J. Densley, l978, IEEE International Symposium on Electrical Insulation, Philadelphia, USA, p. 36, June l978.

3. "Some Results of Partial-Discharge Measurements during the Growth of Electrical Trees," with R.J. Densley, l977, Conference on Electrical Insulation and Dielectric Phenomena, National Academy of Sciences-National Research Council, USA, p. 330-338, l977.


2. "Partial Discharge Characteristics of Solid Insulation Containing Spherical Cavities of Small Diameters," with R.J. Densley, l976, Conference on Electrical Insulation and Dielectric Phenomena, National Academy of Sciences-National Research Council, p. 28l-288, l976.

1. "The Effect of Secondary Electron Emission on the Flashover of Solid Insulators in Vacuum," with J.D. Cross, IEEE Canadian Communications and Power Conference, Montreal, p. 245, Nov. l974.

LIST OF ABSTRACTS AND UNREFEREED PUBLICATIONS AND REPORTS

1. "Partial Discharges in Solid Dielectrics," Cage Club meeting, Laval, Quebec, Canada, May l975.

2. "Electrical Insulation Research at the National Research Council of Canada," Cage Club meeting, Waterloo, Ontario, Canada, May l977.

3. "Partial Discharges in Insulating Materials Immersed in Liquid Nitrogen," Cage Club meeting, Montreal, Canada, May l978.

4. "Role of Microparticles in Vacuum Gap Breakdown," with J.E. Thompson and G.M. Wierzba, Progress Report for Navy Contract No. 6092l-79-C-Al86, Sept. l980.

5. "Electro-optical Measurements of Solid Insulator Surface Fields and Surface Charging in Vacuum," with D.M. Hyslop and J.E. Thompson, Report to National Bureau of Standards, Grant NB 80NADA l0l5, April l980.

6. "Optical Measurements of Surface Flashover Mechanisms in Vacuum/Solid and Gas/Solid Interfaces," with J.E. Thompson, Technical Report to the National Bureau of Standards, Grant NB 80NADA l0l5, Sept. l980.

7. "Investigations of Pulsed Vacuum Gaps," with J.E. Thompson, and J.M. Butner, Final Report to Naval Surface Weapons Center, Contract 6092l-79-C-Al86, February l98l.

8. "l980 Annual Report: Optical Measurements for Interfacial Conduction and Breakdown," with R.E. Hebner, E.F. Kelly, J.E. Thompson, and T.B. Jones, l980.

9. "Electro-optical Measurements and Field Calculations Associated with Pulse Stressed 45 degree Insulator/Vacuum Interface," with D. Chang, P. Arnold, and J.E. Thompson, technical report to Sandia Laboratory, contract No. GTK/l3-983l, August l98l.

10. "Liquid Metal Wetting of Metal and Insulator Surfaces for High Power Applications," with J.E. Thompson, annual report to NSF, Grant No. CPE-80247l2, June l982.

11. "Surface Flashover Measurements and Analyses for Vacuum/Solid and Gas/Solid Interfaces," with J.E. Thompson, final report to the National Bureau of Standards, Grant NB80 NADA l0l5, June l982.

12. "Prebreakdown Phenomena Across Dielectric Surfaces, Stressed by 60 Hz Voltages," with R. Lee and J. E. Thompson, report to National Bureau of Standards, Grant NB80 NADA l0l5, August, l982.

13. "Investigations of Pulsed Vacuum Gap Breakdown Mechanisms," with J.E. Thompson, final report to the Naval Surface Weapons Center, contract No. N6092l-8l-CAl42, May l982.

14. "Conduction and Breakdown Mechanisms in Barium Titanate," with J. Thompson and D. Chang. Report to AVX Corporation, l983.

15. "Liquid Metal Wetting of Metal Electrodes," final report to NSF, Award No. CPE-8024712, Aug. 20, 1984.

16. "Investigations of Insulator Surface Flashover in Gas," final report to National Bureau of Standards, contract No. NB 82 NA DA 3035, Oct. 18, 1984.

17. "Investigations of Interfacial Phenomena in Compressed Nitrogen Gas," annual report to Oak Ridge National Laboratory, contract No. 19 x-89627c, November 9, 1984.

18. "Ionization Phenomena at Gas-solid Dielectric Interfaces Under High Voltage Stress," literature review report to Oak Ridge National Laboratory, March 1985.


19. "New Insulators for TWT Feedthroughs," literature search report, INTELSAT, INTEL-429, Dec. 7, 1984.

20. "New Insulators for TWT Feedthroughs - Phase I," report to INTELSAT, 75 pages, June 3, 1985.

21. "Basic Investigations of Electronic Processes in the Breakdown of Compressed Gas - Solid Dielectric Interfaces," annual report to Oak Ridge National Lab., 86 pages, Sept. 23, 1985.

22. "Partial Discharge Measurements in Lineman Rubber Gloves," Preliminary Investigations, report to North Hand Co., Charleston, 25 pages, October 1985.

23. "New Insulators for TWT Feedthroughs - E Field," report to INTELSAT, 40 pages, December 6, 1985.

24. "New Insulators for TWT Feedthroughs - Flange Testing," report to INTELSAT, 31 pages, March 20, 1986.

25. "Clean Feedthrough Test Report and Investigations of Feedthrough Deconditioning," report to INTELSAT, INTEL-429, 35 pages. September 5, 1986.

26. "Basic Investigations of Electronic Processes in the Breakdown of Compressed Gas - Solid Dielectric Interfaces," final report to DOE/Oak Ridge National Lab., Contract No. 19X-89627C, 150 pages, Dec. 12, 1986.

27. "New Insulators for TWT Feedthroughs," INTELSAT, contract No. INTEL-429. Final report, 220 pages, August 1, 1987.

28. "Investigations of Pulsed Surface Flashover Phenomena Along Dielectric and Photoconducting Materials," first annual report to the Office of Naval Research, 45 pages, April 1987 to March 1988.

29. "A Three Stage Process Leading to Pulsed Flashover of High-Purity Si in Vacuum," Workshop on Optically and Electron Beam Controlled Semiconductor Switches, Old Dominion Univ., May 23-24, 1988.

30. "Time-Resolved Pre-breakdown and Breakdown Measurements for Photoconducting Silicon in Vacuum under 0.6/10 µs pulse excitation," SDIO/ONR Pulse Power Workshop, Univ. of Rochester, Aug. 15-16, 1988.

31. "Time-Resolved Breakdown Measurements for 99.9% Alumina Bridged Vacuum Gaps under 0.5/15 µs Impulse excitation,” Ibid.

32. "Investigations of Pulsed Surface Flashover Phenomena along Dielectric and Photoconducting Materials,” second annual report to the Office of Naval Research, 75 pages, April 1988 to March 1989.

33. "Correlation of Alumina Surface Finish with the Pulsed Surface Flashover Performance," SDIO/IST workshop on Pulse Power Physics, San Diego State University, July 25-26, 1989.

34. "Initiation Mechanism of Pulsed Surface Flashover along Silicon in Vacuum by Pre-breakdown Conduction Photon Emission," SDIO/IST workshop on Pulse Power Physics, San Diego State University, July 25-26, 1989.

35. "Pulsed Surface Flashover Characteristics along Ceramic Insulators and Photoconducting Silicon," 3rd SDIO/ONR Pulse Power Meeting, Old Dominion University, Aug. 2-3, 1990.

36. "Influence of Surface Microstructure of Alumina Ceramics on the Pulsed Surface Flashover Phenomena in Vacuum," M. J. Murdock Charitable Trust: First Annual Report, July 1990.

37. "Influence of Surface Microstructure of Alumina Ceramics on the Pulsed Surface Flashover Phenomena in Vacuum," M. J. Murdock Charitable Trust: Second Annual Report, August 1991.

38. "High Temperature Performance of Power Cable Connectors," final report to Pirelli Cable Corp., 87 pages, February 1991.

39. "Investigations of Pulsed Surface Flashover Behavior of Insulators and Semiconductors," Proc. of the 4th SDIO/ONR Pulse Power Meeting, Los Angeles, pp. 44-54, June 1991.

40. "Correlation between the Surface Properties and the Breakdown Phenomena of Alumina Ceramics," First Annual Report to NSF, Feb. 1992.

41. "A Total Quality Approach to Photoconductive Power Switches," Proc. of the 5th SDIO/ONR Pulse Power Meeting, Aug., Washington, D.C., pp. 152-69, 1992.


42. "Influence of Surface Microstructure of Alumina Ceramics on the Pulsed Surface Flashover Phenomena in Vacuum," Final Report to Murdock Trust, Aug. 1992.

43. "Investigations of High Field Effects in SiC Films," DNA/BMDO, July 1993. 44. "High Voltage Performance of Photoconductive Silicon Wafers," Proc. of the 6th SDIO/ONR Pulse Power

Meeting, Chicago, pp. 108-21, August 1993. 45. "Correlation between the Surface Properties and the Breakdown Phenomena of Alumina Ceramics," Second

Annual Report to NSF, Feb. 1994. 46. "Spectroscopic Observations of Dielectric Preflashover Activity in Vacuum," with C.R. Li, Annual Report,

CEIDP, Arlington, TX, Oct. 1994. 47. "Survey of the State-of-Art Small Gap Electrical Insulation," report submitted to SI Diamond Technology,

Inc., Houston, TX, May 1994 (proprietary). 48. "High Power Diamond Cold Cathode for Directed Energy Applications," report to SI Diamond Technology,

Inc., Austin, TX, Nov. 1994 (proprietary). 49. "Recent Investigations of High Field Effects in High Resistivity SiC," Report to BMDO/IST, Dr. D.

Duston, Dr. G. Roy, Feb. 1995. 50. "Electrical Breakdown of an Oil Gap formed across a Bearing Electrode," report to AS&M Inc., Hampton,

VA, March 1995. 51. "Correlation between the Surface Properties and the Breakdown Phenomena of Alumina Ceramics," Final

Annual Report to NSF, Dec. 1995. 52. "High Field Characterization of 4-H SiC p-n Junction Diodes by the Surface Avalanche Method," report to

BMDO/ONR, Dr. D. Duston and G. Roy, Oct. 1995. 53. "C-V and Local Avalanche Characterization of p-type 6H-SiC MOS Structures," report to BMDO/ONR,

Dr. D. Duston and G. Roy, Nov. 1995. 54. "High Temperature Characteristics of High Resistivity and Semi-Insulating 6H-SiC under Pulsed Fields,"

report to BMDO/IST, Dr. D. Duston, March 1996. 55. "Electrical Breakdown and High Field Behavior Studies in Ta-Ta2O5-Metal and Ta-Ta-Ta2O5-Organic

Semiconductor Structures," Final Report, AVX Corp., Myrtle Beach, Jan. 6, 1997. 56. "High Voltage/High Field Behavior of SiC for High Power Electronic Device Applications," report to

ARO, Research Triangle Park, Feb. 2, 1997. 57. "Microspacer Insulation for Field Emission Displays," DARPA High Definition System (HDS) Information

Exchange Conference, Washington, DC, March 23-25, 1998. 58. "High Voltage/High Field Behavior of SiC for High Power Electronic Device Applications," annual report

to ARO, Research Triangle Park, Feb. 2, 1998. 59. "Surface Flashover Characteristics of Single Crystal Diamond," with P. Muzikov and X. Ma, Diamond

Microelectronics Corp. CREDA Workshop, Nanosystems, Inc., Oxford, CT, Oct. 29, 1998. 60. "High Voltage/High Field Behavior of SiC for High Power Electronic Device Applications," annual report

to ARO, Research Triangle Park, Jan. 11, 1999. 61. "Defect Formation during SiC Bulk Crystal Growth," with I. Khlebnikov, 1999 Workshop on Compound

Semiconductor Materials and Devices (WOCSEMMAD), New Orleans, Feb. 21–24, 1999. 62. “SiC substrate issues - thick film epitaxy for ‘filling-up’ micropipes,” with I. Khlebnikov, WOCSEMMAD,

New Orleans, Feb. 21–24, 1999. 63. “New device concepts - 1kV Schottky diodes on P-type SiC using thick oxide film for edge termination,”

with I. Khlebnikov, WOCSEMMAD, New Orleans, Feb. 21–24, 1999. 64. "High Voltage Characterization of Type IA Nitrogen Doped Diamond," with P. Muzykov and X. Ma,

Diamond Microelectronics Corp. CREDA Workshop, MIT Lincoln Lab, March 12, 1999. 65. "Silicon Carbide Film Growth and Processing Issues," Litton Industries, Airtron Dvn, March 17, 1999. 66. "Microspacer Insulation for Field Emission Displays," DARPA High Definition System (HDS) Information

Exchange Conference, Washington, DC, March 24, 1999. 67. "High Voltage/High Field Behavior of SiC for High Power Electronic Device Applications," final report to

ARO, Research Triangle Park, Jan. 2000. 68. "Microspacer Insulation for Field Emission Displays," monthly reports to ONR/DARPA.


69. "Selective Doping in SiC via Diffusion," with Y. Gao and S. Soloviev, 2000 Workshop on Compound Semiconductor Materials and Devices (WOCSEMMAD), San Diego, Feb. 19-23, 2000.

70. "SiC Device Modeling using ATLAS," with M. Tarplee and V. Madangarli, WOCSEMMAD, San Diego, Feb. 19-23, 2000.

71. "Growth of Porous SiC: Si vs. C Face," with S. Soloviev and T. Das. ONR Workshop on Challenges in Porous and Amorphous Wide Gap Semiconductors, Corner Brook, NF, Canada, June 10 – 14, 2001.

72. "Structural & Electrical Characterization of Porous SiC," S. Soloviev and T. S. Sudarshan, DURINT Workshop on Nanoporous Silicon Carbide and Gallium Nitride, Tampa, FL, Jan. 3-4, 2002.

73. "Defect Delineation in Silicon Carbide by EBIC," with S. Maximenko and R. Bondokov, ONR workshop on Extended Defects in Widegap Semiconductors; Electrical and Optical Effects. January 27-31, 2002, Belize.

74. "Electrical & Optical Effects," invited talk at ONR workshop on Extended Defects in Wide Gap Semiconductors, Belize, January 2002.

75. "Definition of Usable Area in SiC wafers," with M. Parker, Y. Khlebnikov, X. Ma and P. Muzykov, 2002 Workshop on Compound Semiconductor Materials and Devices (WOCSEMMAD), Austin, TX, Feb. 2002.

76. "Non-Destructive SiC Wafer Characterization," with X. Ma, Y. Ma, T. Kuboto, and P. Talekar, WOCSEMMAD, Austin, TX, Feb. 2002.

77. "A-Face Silicon Carbide," with Y. Khlebnikov, I. Khlebnikov and P. Muzykov, WOCSEMMAD, Austin, TX, Feb. 2002.

78. "An Automated Defect Detection System for Silicon Carbide Wafers," with T. Kubota, P. Talekar, X. Ma, M. Parker, and Y. Ma, 2002 SE Conference, April 2002.

79. “Silicon Carbide research activity in South Carolina,” with I.I. Khlebnikov at the IV International Seminar on Silicon Carbide and Related Materials, ISSCRM, Novgorod, Russia, May 2002.

80. “Current Status of SiC Research in the US,” with I.I. Khlebnikov at the IV International Seminar on Silicon Carbide and Related Materials, ISSCRM, Novgorod, Russia, May 2002.

81. "Si-SiC Bulk Growth: Purity and Doping Issues," with I. Khlebnikov, ONR workshop on Challenges in Semi-Insulating Nitrides & SiC conference, Laugarvatn, Iceland, July 14-18, 2002.

82. "Characterization of Semi-Insulating SiC wafers: Electrical and Optical," with P. Muzykov, ONR workshop on Challenges in Semi-Insulating Nitrides & SiC conference, Laugarvatn, Iceland, July 14-18, 2002.

83. “Polytype Transformation during SiC Crystal Growth,” with Y. Khlebnikov, G. Stratiy, S. Maximenko, I. Khlebnikov, D. Cherednichenko, and R. Bondokov, MRS Boston, MA, Dec. 2002.

84. “Formation and characterization of porous SiC,” with S. Soloviev, T. Das, J. Bai, P.I. Gouma, Y. Khlebnikov, and I. Khlebnikov, DURINT Workshop, Richmond, VA, March 2003.

85. “Hot-Wall CVD Epi-Growth of 4H-SiC using PVT Buffer Layer,” with Y. Gao, Z. Zhang, X. Ma, and Y. Khlebnikov, 45th Electronic Materials Conference Salt Lake City, UT, June 2003.

86. “Study of Forward Voltage Drop Degradation in Diffused SiC PIN Diodes,” with D. Cherednichenko, S. Soloviev, Y. Gao, Y. Ma, and A. Grekov, EMC, Salt Lake City, UT, June 2003.

87. “Nondestructive defect characterization of SiC substrates and epilayers,” with X. Ma, EMC, Salt Lake City, UT, June 2003.

88. “Nondestructive defect mapping of SiC substrates and epilayers using a PLM system,” with X. Ma, ONR Workshop on Extended Defects in Wide Gap Semiconductors, Richmond, VA July 2003.

89. “Substrate Defects and III-Nitride Epitaxy,” with X. Ma and M.A. Khan, 8th Wide-Bandgap III-Nitride Workshop, Richmond, VA Sept. 2003.

90. "Formation and Structure of Porous Silicon Carbide" with S. Soloviev, Seminar for the Center for Functional Nanomaterials at Brookhaven National Laboratory October 2003.

91. “Evaluation of SiC Wafers for Device Fabrication,” with X. Ma, invited 12th International Workshop on the Physics of Semiconductor Devices (IWPSD) Dec. 2003.

92. “Non-degrading 4H-SiC PIN diodes: fabrication and characterization,” with S. Soloviev, WOCSEMMAD, Pasadena, CA, Feb. 2004.


93. “Characterization of Defects Generated during Boron Diffusion in SiC,” with XF. Lin, S. Smith, X. Ma, L. Wang, Q. Zhang, and H-R. Chang, 2004 MRS Spring Meeting, San Francisco, CA, April 2004.

94. “The Effect of Doping Concentration and Conductivity Type on Preferential Etching of 4H-SiC by Molten KOH,” with Y. Gao, Z. Zhang, R. Bondokov, and S. Soloviev, 2004 MRS Spring Meeting, San Francisco, CA, April 2004.

95. “Nondestructive Defect Characterization and Its Significance in WBG Material/Device Development,” with X. Ma, DARPA/MTO TriServices, Monterey, CA, May 2004.

96. "Silicon Carbide Material Characterization, Epitaxy, and Device Fabrication and Testing,” with S. Soloviev, ONR Electronics Division Materials Program Review, Monterey, CA, August 2004.

97. “Micro robots for harsh environments,” with Q. Li, ARL Advanced Microsystems Workshop, Jan. 30-31, 2006, Research Triangle Park.

98. “Graphite and BN/AIN Annealing Caps for Ion Implanted SiC,” M. C. Wood, K. A. Jones, T. S. Zheleva, K. W. Kirchner, M. A. Derenge, A. Bolonikov, T. S. Sudarshan, R. D. Vispute, S. S. Hullavarad, and S. Dhar, 25th Army Science Conference, November 27-30, 2006, Orlando, FL.

99. "Defect-Device Performance Correlation for DOW SiC Epiwafers," ONR/DOW Corning Known Good Substrates Program Review Meeting, Dec. 14, 2006, Chicago.

100. “Investigation of epilayer growth on low off axis 4H-SiC substrates,” ONR Electronic Device Material Review, Washington, DC, August 6-10, 2007.

101. “Study of trap centers in n-type SiC MOS capacitors using thermally stimulated current (TSC) and capacitance voltage (CV) measurements,” Peter Muzykov, A.V. Bolotnikov, and Prof. T. S. Sudarshan Presented at SiC MOS workshop at ARL, 2800 Powder Mill Rd., (Bldg 601), Adelphi, MD 20783, Thursday 21 and Friday 22 August 2008.

102. “SiC Epitaxial Growth: Challenges and Opportunities – Workshop on Energy Efficiency through Wide Bandgap Power Electronics,” presented at NRL. T. S. Sudarshan and Peter Muzykov, January 7-8, 2009.

103. “Development of High Quality 4H-SiC Thick Epitaxy for Reliable High Power Electronics Using Chlorinated Precursors,” ONR annual report, T. S. Sudarshan, August, 2010.

104. “Development of High Quality 4H-SiC Thick Epitaxy for Reliable High Power Electronics Using Chlorinated Precursors,” ONR annual report, T. S. Sudarshan, August, 2011.

105. “Development of High Quality 4H-SiC Thick Epitaxy for Reliable High Power Electronics Using Halogenated Precursors,” ONR annual report, T. S. Sudarshan, August, 2012.

FUNDED GRANTS AND CONTRACTS

Project Title Role Sponsor Total Amount and Share of

Funding

Start Year

End Year

1 "Liquid Metal Coating of Metal Electrodes"

PI U.S.C. Research and Productive Scholarship

$3,622 1/80 12/80

2 "Nanosecond Surface Flashover Mechanisms in Vacuum"

Co-PI with J. E. Thompson, Sandia Labs/US DOE

$77,000 11/79 3/81

3 "Investigations of Surface Flashover" Co-PI with J. E. Thompson, National Bureau of Standards/ USDOE

$68,644 10/79 9/80


4 "Investigations of Pulsed Vacuum Breakdown"

Co-PI with J. E. Thompson and G. M. Wierzba, The Naval Surface Weapons Center

$49,000 5/79 5/80

5 "Role of Microparticles in Vacuum Breakdown"


$26,000 8/80 12/80

6 “Vacuum Gap Prebreakdown and Breakdown"

Co-PI with J. E. Thompson, The Naval Surface Weapons Center

$68,000 1980

7 "Development of Pulsed High Power Vacuum Switch"

Co-PI with J. E. Thompson, Los Alamos Scientific Laboratory

$88,000 1980

8 "Liquid Metal Wetting of Metal and Insulator Surfaces for High Power Applications"

PI with J. E. Thompson and J. W. Faust, Jr., NSF

$63,052 6/81 6/82

9 "Investigations of Pulsed Vacuum Mechanisms"


$80,000 1980

10 "Nanosecond Surface Flashover Mechanisms in Vacuum"

Co-PI with J. E. Thompson, Sandia Laboratories

$70,000 1980

11 "Investigations of Pulsed Vacuum Mechanisms"

Co-PI with J. E. Thompson, The Naval Surface Weapons Center

$125,000 1/81 6/81

12 "Liquid Metal Wetting of Metal and Insulator Surfaces for High Power Applications"

PI with J. E. Thompson, NSF

$63,500 6/82 6/83

13 "Investigations of Pulsed Vacuum Characteristics, Breakdown Mechanisms, and Recovery Rates"

Co-PI with J. E. Thompson and R. L. Boxman The Naval Surface Weapons Center

$120,000 6/82 6/83

14 "Investigations of Surface Flashover in Gas"

PI with J. E. Thompson, National Bureau of Standards

$95,000 9/82 12/83

15 Partial Support for the 10th International Symposium on Discharges and Electrical Insulation

Co-PI with J. E. Thompson, AFOSR/NSWC/AFWAL

$9,000 10/82

16 Partial Support for the 10th International Symposium on Discharges and Electrical Insulation in Vacuum

Co-PI with J. E. Thompson, ONR

$2,000 10/82

17 Partial Support for the 10th International Symposium on Discharges and Electrical Insulation in Vacuum;

Co-PI NSF $2,000 10/82

18 "Investigations of Interfacial Phenomena in Compressed N2 Gas"

PI with R. A. Dougal, DOE/ORNL

$49,000 2/84 9/84

19 "New Insulators for High Voltage TWT Feedthroughs"

PI INTELSAT $120,000 11/84 8/87

20 "Basic Investigations of Electronic Processes in the Breakdown of Compressed Gas-Solid Dielectric Interfaces,"

PI with R. A. Dougal, DOE/ORNL (USC cost sharing $ 40,000)

$141,794 2/85 12/86

21 "Swarm Parameters along Gas/Solid PI DOE/ORNL $5,000 9/86 12/86


Interfaces," 22 International Travel Support to India to

Visit the High Voltage Engineering Department, Indian Institute of Science, Bangalore, India,

PI NSF $3,000 (a) May 1984

(b) May 1987

23 "Engineering Research Equipment Grant: Fast Multichannel Digital Data Acquisition System"

PI with Dougal and Hudgins, NSF

$63,000 Sept. 1987

24 "Investigations of Pulsed Surface Flashover Phenomenon along Dielectric and Photoconducting Materials"

PI ONR/SDIO $392,000 6/87 12/91

25 "Influence of the Surface Microstructure of Alumina Ceramics on the Pulsed Surface Flashover Phenomena in Vacuum,"

PI M. J. Murdock Trust $180,000 7/89 6/92

26 "Vacuum Insulator Breakdown under High Frequency Excitation"

PI Sandia National Laboratory

$90,000 5/90 12/91

27 "High Temperature Performance of Power Cable Connectors"

PI Pirelli Cable Corporation, S.C

$50,000 1/90 12/90

28 "Effect of Magnetic Fields on the Immune System"

PI with J. Hudgins and A. Ghaffar, SCE&G

$13,000 5/90 12/91

29 "Design and Construction of a Compact Termination System for Power Cable Testing"

PI with C. Brice, Virginia Electric Power Company/ Pirelli Cable

$61,500 9/91 8/92

30 "Correlation between Surface Properties and Breakdown Phenomenon of Alumina Ceramics"

PI NSF $225,000 1/92 12/94

31 "Surface Breakdown Issues in Photoconductive Switches"

PI SDIO/ONR $300,000 1/92 12/94

32 "Pulsed RF Breakdown Performance of Solid Insulators for Linear Accelerator Applications"

PI ONR/EPSCOR $114,795 9/92 8/95

33 Short-Term Research Program for the Investigation of High Field Effects in SiC Films"

PI DNA/UT-Arlington $60,000 5/93 12/93

34 "Engineering Research Equipment for Studying High Field Effects in Materials"

PI ONR/EPSCOR $127,250 9/93 12/94

35 "Engineering Research Equipment; Wideband Tunable Laser-Optical Spectrometer System"

PI NSF $85,000 9/93 2/95

36 "Surface Breakdown Issues in Photoconducting Materials"

PI SDIO/ONR $140,000 3/94 2/95

37 "High Field Characteristics of SiC at High Voltages for High Power Electronic Devices"

PI BMDO/ONR $220,000 5/95 5/96

38 "High Field Characteristics of Nitride Devices for High Power Electronics Technology"

PI BMDO/US Army SSDC

$250,000 6/96 6/97

39 "High Voltage/High Field Behavior of SiC for High Power Electronic Device Applications"

PI ARO $541,934 9/96 8/99


40 "Microspacer Insulation for Field Emission Displays"

PI DARPA/ONR $900,000 6/96 5/99

41 "Optical Characterization of Defects in Wide Bandgap Semiconductors for High Power Electronics"

PI Equipment Grant, ONR

$170,855 8/96 7/97

42 "Electrical Breakdown and High Field Behavior Studies in Ta-Ta2O5-Metal and Ta-Ta-Ta2O5-Organic Semiconductor Structures,"

PI AVX Corp., Myrtle Beach

$14,000 4/96 7/96



$250,000 6/97 6/98

44 "High Power Microwave Field Effect Transistors based on GaN-AlGaN Hetero-Junctions"

Co-PI M. A. Khan and T. S. Sudarshan, BMDO/US Army SSDC

$3,500,000 1997 1998



$229,005 6/98 6/99

46 "Thick Film Epitaxial Growth of SiC to Cover Micropipes in Commercial SiC wafers"

PI Litton Corp./ Airtron Dvn., Morris Plains, NJ

$120,000 6/98 12/99

47 "SiC Materials Research and Technology Development"

PI ONR $1,000,000 11/99 4/02

48 "SiC Materials Research and Technology Development"

PI ONR $1,750,000 5/00 3/02

49 "High Temperature Epitaxial Growth of SiC"

PI ONR $101,679 6/00 5/01

50 " SiC Materials Research and Technology Development "

PI ONR $1,306,021 12/00 2/03

51 “A Non-destructive Defect Mapping System for SiC”

PI CMAT $18,000 4/02 6/02

52 “Characterization of Surface Modification for Single Crystal SiC during Polishing”

PI CMAT $15,000 4/02 6/02

53 “Porous Silicon Carbide: Fabrication and Characterization of Test Structures for Use in Implantable Biological Devices”

PI USC VPR Funds $40,000 2002 2003

54 “Silicon Carbide Growth Modeling, Material Processing and Characterization”

PI ONR $999,997 4/02 12/03

55 “Silicon Carbide: Material characterization, Epitaxy, and Device Fabrication and Testing”

PI ONR $1,467,906 3/03 3/05

56 “Lapping and Polishing of Silicon Carbide Wafers”

PI USCRF $84.42 8/24/04 1/31/09

57 III-Nitride MOSHFET based advanced RF circuits,”

PI US Army Space Missile Defense Command (USASMDC)

$1,183,067 3/11/05 3/10/08

58 “Local PVT growth of SiC films on 4H- PI GE Global Research $50,000 9/15/05 7/30/06


SiC substrates,” 59 “Silicon carbide research fund,” PI gift from GE Global

Research $20,000 9/28/2005

60 “SiC epiwafer quality assessment by device performance,”

PI Dow Corning Corp., Midland, MI,

$90,162 4/06 3/07/2006

61 "Study of the Influence of Specific Crystallographic Defects on Current Gain Stability of SiC BJTs and Leakage Current of Schottky Diodes,”

PI CREE, Inc., Durham, N.C.

$25,000 5/06 9/30/2006

62 "Halocarbon Etching Surface Preparation of Silicon Carbide,"

PI ONR $2,488 9/20/2006 9/30/2007

63 "Epitaxial SiC on Convex Surfaces," PI ONR $60,733 9/20/2006 9/30/2007 64 “Investigation of Degradation

Phenomena in SiC NPN Bipolar Junction Transistors,

PI CREE, Inc./ Army Research Lab/DoD

$100,000 2/1/2007 12/31/ 2008

65 Defect Correlation of Schottky Based SiC Devices Using New Form of KOH Etching

PI Magellan Scholar Award for Kevin Daniels: MGS:

$2,819 4/5/2007 4/4/2008

66 “Characterization of 4H-SiC using a Halide Based Precursor on Low Off-axis Substrates”,

PI ONR $14,880 7/17/2007 9/30/2008

67 “Homoepitaxial Growth of 4H-SiC Using Halide Based Precursor on Low Off-axis Substrates”,

PI ONR $22,730 8/13/07 8/12/08

68 “Polymer Nanocomposites as Future Materials For Defense and Energy Applications: High Energy Density Storage Systems with Reduced Size and Weight for Pulse Power Applications,”

Co-PI DEPSCOR 08, $50,000 7/15/2008 7/14/2011

69 “Polymer Nanocomposites for Energy Storage and Pulsed Power”

Co-PI Air Force/UTC $70,000 10/1/2008 3/31/2010

70 “Growth of Thick Epitaxial Layers on 4H-SiC Substrates Using Chlorine Chemistry for High Power Applications,”

PI ONR. $300,000 3/1/2009 2/28/2011

71 “Development of High Quality 4H-SiC Thick Epitaxy for Reliable High Power Electronics Using Chlorinated Precursors,”

PI ONR $600,000 4/1/2010 3/31/2014

72 “Process chemistry and Monitoring Support for SRNL R&D Program”

PI SCUREF/DOE $50,000 10/1/2010 7/1/2011

73 “Hosting of Safeguard Technology Workshop,”

PI SCUREF/DOE $25,000 10/14/2010 5/31/2011

74 “Low Cost, Scalable Manufacturing of Surface Engineered Super Hard Substrates For Next Generation Electronic and Photonic Devices,”

USC PI Sinmat, Inc./NIST $150,000 3/1/2011 1/31/2014

75 Novel Defect Capped Planarization Assisted Growth (DC-PAG) Method to Eliminate Device Killing Defects in SiC Epitaxial Process

USC PI SBIR, Phase I, Sinmat, Inc./AirForce

$25,000 7/18/2012 4/30/2013

Total Funded Research ~ $ 18,966,517


RESEARCH SUPERVISION

• Number of post-doctoral associates and Research Professors 23 • Number of Ph.D. students 27 ( 23 Ph.D. students

graduated ) • Number of M.S. students 53 ( 51 M.S. students

graduated ) • Number of undergraduate research students 129 (As of January, 2011) • Number of 499 projects supervised 35 • PhD advisory committees 20

A. Post-Doctoral and Research Associate Supervision

1. Prof. Zhong Xu, Visiting Scholar from Taiyuan Engineering Institute, "Permeation of Metallic Ions in Metal Substrates by the Double Layer Glow Discharge Technique," March 1982 - June 1983,.

2. Dr. D. Li, Yeungnam University, South Korea, "Investigations of Surface Flashover in Compressed Nitrogen," Sept. 1982- Sept. 1983,.

3. Dr. T. Asokan, Carborundum Corporation, India, "Investigations of Pulsed Surface Breakdown of Dielectric Materials," Dec. 1991 to 1994.

4. Dr. J. Wang, Centre de Physique Atomique, Toulouse, France, "Computational Analysis of the Surface Permittivity and Charging of Dielectrics using the SEM Mirror Technique," Dec. 1990 to July 1991.

5. Dr. G. Gradinaru, R&D Institute for Electronic Components, Bucharest, Romania, "High Field Effects in Semiconductor -Dielectric Systems," Nov. 1991 – 1998.

6. Dr. C. Li, North China Institute of Power, Beijing, China, "Spectroscopic Investigations of Discharges and Light Emission from Dielectric Materials under High Fields," June 1992 - Jan. 1995.

7. Dr. G. Korony, Institute of Physics and Technology of Materials, Bucharest, Romania, "Thin Film Semiconductors and Contacts," June 1992 – 1996.

8. Dr. Igor Khlebnikov, Taganrog State University of Radio Engineering, "Silicon Carbide Bulk and Epitaxial Growth," June 1996 – March 2003.

9. Dr. Xianyun Ma, Tsinghua University, Beijing, "Breakdown of Micrometric Vacuum Gaps and Microspacer Insulation," Aug. 1996 – Aug. 2004.

10. Dr. Vipin Madangarli, USC graduate, "High Field Characterization of Wide Bandgap Semiconductor Materials (SiC and GaN) and Device Test Structures," Jan. 1997 – 2001.

11. Dr. Stanislov Soloviev, Taganrog State University of Radio Engineering, "Silicon Carbide Device Processing – Oxidation, Schottky Diode Fabrication, etc." April 1997 – September 2004.

12. Dr. J. D. Kim, EE Dept., Kyungnam University, Korea, "Microgap Insulation in Vacuum," Sept. 1995. Aug. 1996.

13. Dr. D. Cherednichenko, Taganrog State University of Radio Engineering, "Silicon Carbide Crystal Growth Modeling," Dec. 1997 to Dec. 2003.

14. Dr. C. Chandler, joined USC from MEMC Corp., Spartanburg, "Silicon Carbide Specimen Surface Preparation," May 1998 – Dec. 1999.


15. Dr. Robert Bondokov, St. Petersburg Electrotechnical University, "Silicon Carbide Wafer Lapping, Polishing, and Etching," March 2000 to October 2004.

16. Mr. Tsankko Lashkov, “Wafer-scale lapping, polishing, and Characterization of SiC wafers”, Aug. 2001 – Nov. 2005.

17. Dr. Ying Gao, USC graduate, "Dopant Diffusion in Silicon Carbide," August 2001 to August 2002.

"SiC Epitaxial Growth," Sept. 2002 to Sept. 2004.

18. Dr. Arulchakkaravarthi Arjunan, Anna University, India, “Bulk Growth of silicon carbide,” Sept. 2003-May, 2005.

19. Dr. Sergei Maximenko, USC graduate, "Defect Characterization in SiC using EBIC," Nov. 2005 to Oct. 2006.

20. Dr. Zehong Zhang, USC graduate, "Reduction of Basal Plane Dislocations in SiC Epitaxial Films," Oct. 2005 to July, 2006.

21. Dr. Alexander Grekov, USC graduate, "Device/Defect Correlations in SiC Schottky and PiN Diodes," Oct. 2005 to Aug. 2006.

22. Dr. Haizheng Song, University of Science and Technology of China, “Silicon Carbide epitaxial growth and defect characterization”, Oct. 2009 to present.

Mentoring of Research Professors

Dr. Peter Muzykov, Intrinsic Semiconductor, USC Centenary Plan Research Assistant Professor, "SiC Epitaxial Growth using Halogenated Precursors and Device/Defect Correlations in SiC Devices," Nov. 2006 to present.

Collaborated on projects with the following visiting professors

(a) Dr. G. R. Nagabhusana, Indian Institute of Science, India, 1980-81. (i) Prebreakdown current measurements along insulators in vacuum (ii) Analysis of electric fields using analog techniques. (b) Dr. R. L. Boxman, Tel Aviv University, 1981-82, "Study of Pulsed Vacuum Gap Breakdown

Mechanisms". (c) Dr. S. Grzybowski, University of Poznan, Poland, 1982-83, "Partial Discharges in Multi-layered

Ceramics". (d) Prof. Jung-Dal Kim, Kyungnam University, S. Korea, "Prebreakdown Conduction Micrometric Vacuum

Gaps," 1995-96. (e) Prof. Chengmu Luo, Tsinghua University, China, "Computation of Electric Fields relevant to FETs and

Micrometric Vacuum Gaps," 1996. (f) Prof. Stanislav Lilov, Univ. of Sofia, Bulgaria, Fulbright Fellow, “Growth and investigation of SiC for

Device applications in High temperature Electronics,” Sept. 1, 2005- Feb. 1, 2006.

B. Doctoral Students l. D. D. Chang, "Partial discharge characteristics of barium titanate capacitors," April 1984. ATT Bell Labs

2. F. T. Warren, Jr., "Modeling of overstressed two element vacuum and low pressure gas gaps," April 1985. Los Alamos National Lab

3. P.A. Arnold, "A study of vacuum insulator flashover on the nanosecond time scale," May 1986. Lawrence Livermore National Lab

4. N. C. Jaitly, "Mechanism of surface flashover and performance of broad area insulator bridged vacuum gaps under DC stress," Dec. l986. Maxwell Labs: Defense Contractor


5. S. Mahajan, "Electron and Ion Avalanche Growth Modifications near a Solid Insulator in Nitrogen Gas," August 1987. Tennessee Tech.; Professor

6. S. H. Nam, "Pulsed flashover phenomena along photoconducting materials," July l990. South Korea Atomic Energy

7. R. G. Bommakanti, "Pulsed flashover phenomena along alumina in vacuum," July l990.

8. V. P. Madangarli, "High Field Effects in Semiconductor -Dielectric Systems," August, 1996. Presently at AMD, Dallas

9. Xiabin Wang, “Ultraviolet photoluminescence method od mappaing defects in SiC wafers”, started summer of 1999, withdrew Dec. 31, 2000.

10. Mohsen Banizaman-Lari, “Investigation of chemomechanical polishing of SiC to reduce sub-surface damage in SiC wafers”, started Sept. 2000, withdrew Dec. 31, 2000.

11. Peter Muzikov, "Cold-Emitters Insulation for Vacuum Microelectronics," Dec. 2000. Presently at Intrinsic Semiconductor.

12. Mark Tarplee, "Development of Basic Design Rules and Evaluation of Novel Design Structures for High Power SiC Diodes through Device Simulation," Dec. 2000. Presently at York Tech, SC; Dean

13. Ying Gao, "Doping of SiC by Diffusion of Boron and Aluminum," Aug. 2001. Presently at Sensor Electronic Technologies.

14. Qingchun Zhang, "Novel SiC Devices for High Power and High Temperature Applications," Aug. 2001. Presently at Cree Inc

15. Iouri Khlebnikov, "Investigation of the Growth Processes and Defect Formation in Epitaxial Layers and Bulk Crystals of Silicon Carbide," May 2002. Presently at Cree Res.

16. Roman Drachev, "Modeling of Defect Formation in SiC during PVT Growth," May 2002. Presently at Dow Corning Corp.

17. Serguei Maximenko, “Investigation of Device Performance Limiting Defects in SiC Semiconductor”, Nov 2005. Presently at Naval Research Labs.

18. Alexander Grekov” Investigation Of Diffused SiC Pin-Diode For High Power Applications”, Oct 2005. Presently Research Associate at USC, EE Dept.

19. Zehong Zhang, “Growth of Low Basal Plane Dislocation Density Epilayers of 4H-SiC for Stable Bipolar Diodes” Oct 2005. Presently at Applied Materials.

20. Alexander Bolotnikov, “Development of High Temperature Diffusion Technology for Edge Termination and Switching Behavior Improvement of SiC p-i-n Diodes, November 12, 2008. Presently at GE Res.

21. Amitesh Shrivastava, “Epitaxial Growth and Characterization of 4H-SiC on Low Off-Axis Substrates for High Power Devices”, November 10, 2008. Presently at Intel Corporation.

22. Iftekhar Ali Chowdhury, started May, 2005, “High Growth Rate and High Purity Semi-insulating Epitaxy Using Dichlorosilane for High Power Devices”, PhD awarded May 2011, Presently at Intel Corporation.

23. Robert Kennedy, “Degradation Phenomena in 4H-SiC N-P-N” Bipolar Junction Transistors”, started Jan. 2005; discontinued 2007.

24. Eugene Tupitsyn, “New design approaches and numerical simulation aimed at high quality sic bulk growth”, November 14, 2008. Presently at Fisk University.

25. Georgy Bolyuba, “Novel approaches to large area SiC pin diodes based on co-diffusion of Aluminum and Boron”, started Jan., 2006, returned to Russia in Aug. 2006.

26. Biplob Daas, “Development of high quality oxide for high inversion channel mobility SiC MOSFETs”, started Jan. 2009. Presently at Intel Corporation.

27. Rana Talwid, “Defect-free Silicon Carbide epitaxial growth using novel techniques”, Jan. 2008; expected to complete in May 2013.

28. Omar Sabih, supervising with Dr. Chandra, “Study of device performance in vertical SiC power rectifiers: a crystal defect perspective”, Aug 2010.


C. Ph.D. Committee Member (since 2005) 1. Mohsen Ghajargar, graduated Dec. , 2007, Denfense, “Simulation of a Flat MEMS Loop Heat Pipe.”

2. J. P. Scaffidi, graduated April 11, 2005, Defense, “Characterization of Ablation and Atomic

3. Emission Enhancements in Dual-pulse Laser-induced Breakdown Spectroscopy using Femtosecondand

4. Nanosecond-pulse Lasers.”

5. Ryan Joseph Priote, graduated June 29, 2005, Defense, “The Design, Fabrication and

6. Implementation of Point Detection and Chemical Imaging Sensors Utilizing Optical and Digital

7. Regression Techniques.”

8. Pan Zhao, graduated Summer 2008, Defense, “Study of SiC Oxidation ofr Device Application,”

9. Nanyang Technological University, Singapore.

10. Kumta Amit Sudhaker, graduated Summer 2009, Defense, “Development of Process Technology for

11. Fabrication of 4H-SiC Silicon Carbide Schottky Barrier Diodes,” Nanyang Technological

12. University, Singapore.

13. Maria Damian, Chemistry Department, USC, December 2009, "Remote detection of High Explosive

14. Vapors/Residues using Micro-Impulse Radar with Selective Multiphoton Laser Ionization and

15. Sample Ablation (Micro-Impulse REMPI RADAR)".

16. Shivasubrama Balasubramanian, Chemistry Department, USC, May 2011, “Polymer Composite

17. Dielectric Materials for Pulse Power Applications.”

18. Bipob Daas, Electrical Engineering Department, USC, June 2011, “

19. Mohammod Qazi, Electrical Engineering Department, USC, June 2011, “Microcantilever Based

20. Potentiometric Sensors For Harsh Environment Applications.”

21. Mohammad Mahbubul Islam, Electrical Engineering Department, USC, defense, October 2011.

22. Nomani Khan, Electrical Engineering Department, USC, defense, October 2011.

23. Fu, (Advisor Dr. Santi ), Modeling of SiC Power Semiconductor Devices for Switching Converter Applications, 2012

24. Nomani, (Advisor Dr. Koley), Graphene Based Chemical and IR Sensors and Correlated Carrier Transport, 2012

25. Amol Singh, (Advisor Dr. Koley), Graphene Growth, Characterization and Applications in Chemical Sensing, 2012

26. Kevin Daniels, (Advisor Dr. Chandra), Electro and Biochemical Treatments of Epitaxial Graphene: Functionalization of Dimensional Carbon, 2012

27. Shamaita Shetu, (Advisor Dr. Chandra), Structural and Electrical Tuning of Graphene Plasmons, 2012

28. Taher AlSharabati, (Advisot Dr. Chen), Mitigating 3G Interference to GPS Signals in 3G Mobile Handsets, 2012

D. Masters Degree Students 1. Yow-Juang Bill Liu, "Wetting of Metal and Insulator Surfaces by Liquid Metals for Applications in the

Development of High Power Switches," l98l.


2. J. M. Butner, "Detection of Microparticles in Pulsed Vacuum Gaps," l980. Sandia National Labs; Scientist 3. F. T. Warren, "Investigations of a Low Pressure Triggered Switch for Crowbar Applications," l980. 4. P. A. Arnold, "Nanosecond Surface Flashover Across 45 Degree Insulators in Vacuum," l980. 5. D. D. Chang, "Electrical Measurements and Computer Aided Analysis of 45 degree Insulator Surface Fields in

Vacuum," l98l. 6. J. M. Wilson, "Breakdown Characteristics of a Triggered Vacuum and Low Pressure Switch," l98l. Sandia

National Labs; Sr. Manager 7. R. J. Lee, "Prebreakdown Phenomena Across Dielectric Surfaces Stressed by 60 Hz Voltages, l982. 8. H. Rhinehart, "Electro-optical Measurements of Insulator Surface Interfacial Fields in Vacuum and Gas," l982. 9. M. Hanna, "Simultaneous Measurement of Prebreakdown Current and Light Emission in Stressed Liquids,"

Sept. 1983. 10. C. Courtney, "Numerical Analysis of E Fields Between HV Electrodes Bridged by 45 Degree Insulators," April

1984. 11. M. H. Lim "Plasma Interaction and Surface Coating Techniques for the Wetting of Metals with Mercury," July

1984. Univ. of Singapore; Professor 12. J. R. Lewis, Jr., "Pre-breakdown and Breakdown Phenomena of Dielectric Surfaces in Vacuum and Nitrogen

Gas Stressed by 60 Hz Voltages," July 1984. 13. J. Warren, Jr., "Electro-optical Measurement of Interfacial Electric Fields," July 1984. 14. J. Cahill, "Insulating Materials for High Voltage Vacuum Tube Feedthrough" November 1985. 15. R. J. Kraft, "Surface Flashover Characteristics of PMMA Bridged/Uniform Field Gaps in a Compressed

Nitrogen Gas System," January 1986. Army Research Labs 16. J. Costello. "Design of a Nitrogen/Dye Laser System to Study the Fast Recovery of Vacuum Gaps," April 1986. 17. Gopi Bommakanti. "E-Field and Insulator Material Considerations for improving the voltage Holdoff

Performance of DC Stressed Coaxial Feedthrough Geometries in vacuum," June 1987. 18. Ken Foo, "Self-Breakdown and Laser Initiated Breakdown Studies of Plain and Solid Insulator-Bridged

Compressed Nitrogen Gas Gaps". May 1988 19. John Gamble, "High-speed photographic studies of pulsed discharge development along photoconducting Si in

vacuum," started Aug. 1988. 20. Satish Menon, "Surface conduction and breakdown properties of Silicon and Diamond wafers," Started in Sept.

1989, incomplete - Aug. 1990. 21. R. Shankararaman, "RF breakdown of insulators in vacuum," started 07/1990 - incomplete -Aug. 1991. 22. R. Sundararaman, "Spectroscopic Investigations of Surface Flashover across an Insulator under Pulsed

Excitation," May 1993. Silicon Valley High Tech Co. 23. E. Kelley, "Effects of 60 Hz Magnetic Fields on Phagocytosis by Macrophages and Mitosis by Splenocytes,"

May 1993. 24. R. Sharangpani, "Investigations of Insulator Flashover under Radio Frequency Bipolar Excitation," Sept. 1993 25. W. Eccles, "Computer Control of High Voltage Laboratory Equipment," June 1992-May 1993. 26. M. Vaidya, "Characterization of Optical Discharges in CEBAF Superconducting Cavity Structure;" started Aug.

1992 – incomplete due to health reasons. 27. Dragos Bica, "Numerical Computer Analysis of Electric Field Distributions for the Design of High Voltage

Electrode Contacts for semiconductor Wafers," April 1994. 28. A. Mitra, "Influence of Residual Stress on the Surface Flashover Properties of Polycrystalline Alumina," May

1994. Motorola 29. K. Broome, "Electron Swarm Parameters for Plain and Insulator Bridged Gaps using the Pulsed Townsend

Technique," May, 1994. 30. K. Salisbury, "Design, Construction and Testing of a High voltage Radio Frequency Generator," Jan. 1995. 31. J. Cai, "The Effect of Surface Passivation on the High Field Performance of Silicon Devices," Jan. 1996. 32. B. Sivankoil, " Pre-Flashover and Flashover Luminosity Studies in Alumina Dielectric in Vacuum," Nov. 25,

1996. 33. M. Helmi, "High Field Behavior of Micropipes in 6H-SiC Single Crystals," Nov. 25, 1996. 34. M. B. Lari, "Surface Modification of Hexagonal Silicon Carbide Wafers," Oct., 2000. 35. R. Ayyagari, "Mechanical Treatment of Hexagonal Silicon Carbide Wafers," Nov., 2000. 36. Harmanpaul Gill, "Investigation of Lapping Process for 4H and 6H SiC,” April 2002. 37. Georgiy Stratiy, “Silicon Liquid Phase Formation during SiC Crystal Growth,” May 2002. 38. Venkatraghavan Aravala, “Hall Effect Measurements of Hexagonal Silicon Carbide,” August 2002.


39. Parag Talekar, “An Automated Defect Detection System for Silicon Carbide wafers,” April 2002. 40. Jack Bonnette, “Reactive Ion Etching of Silicon Carbide using CF4/O2,” April 2003. 41. Srikanth Regula, “Electrical Characterization of Semi-Insulating SiC Wafers,” Nov. 2002. 42. Taniya Das, “Porous SiC: Formation and Characterization,” Nov. 2002. 43. Liang Wang, “Optical characterization of silicon carbide,” 2003. 44. Yuefei Ma, “Study of Forward Voltage degradation of diffused 4H-SiC PiN diode,” 2003. 45. Naveen Tipirneni, “Hydrogen etching of SiC: Applications and Limitations,” 2003. 46. Srikumar Kadagambadi, “Chemical etching of [11-20] oriented SiC wafers by molten potassium hydroxide,”

2003. 47. Geraldine Andrews, “Formation and Passivation of Deep (>10 μm) MESA Structures for SiC Power Devices,”

2003. 48. Prema Radhakrishnan, “Reverse Recovery time measurements in 4H-SiC P-i-N diodes”, Apr 2005. 49. Priyamvada Sadagopan, “Study of the Issues in Integration of SiC Schottky Diodes”, Nov 2005. Currently at

QualComm, San Diego, CA. 50. Christopher Morgan, "Fabrication and Testing of a High Temperature CVD Furnace for the Growth of Thick

SiC Epitaxial Films," August, 2006. Currently at CREE, Inc., Research Triangle Park, NC. 51. Jay Prakash Gupta, “Wafer-scale I-V Characterization of SiC Scottky Diodes”, started August, 2006;

discontinued January 2007. 52. Robert Kennedy, “Degradation Phenomena in 4H-SiC N-P-N Bipolar Junction Transistors”, August 2007.

E. Undergraduate Student Supervision: Undergraduate research students supervised: 129 (As of 2011)

Name Year Title or Topic 1 Andrew Patterson

2013 Spring Desalination of water by an electrochemical process 2 Wil Bledsoe 3 Joey Andrews

4 Aaron Harris Feb 2013 to Present Characterization of SIC Epitaxial Films

5 G. Brown 2011-12 Fabrication and Implementation of Filter Media to Remove Heavy Metals from Influent Water 6 R. Drayer

7 Joey Andrews Fall 2012 AFM and Optical characterization of Graphene Films F. Engineering Special Projects

1. L. Park, "Computer Automation of an Electrolytic Tank for Electric Field Measurements," ENGR 430 Project, August 1981-Aug. 1982.

2. K. Salisbury, "Electrostatic Field Distributions using the Electrolytic Tank Analog Technique for Two Dielectric Systems," ENGR 430 Project, January 1982,-October 1983.

3. K. Coleman, "Wetting of Metals by Liquid Mercury: Theory and Procedures," ENGR 430 Project, January 1982-May 1982.

4. A. Dalloul, "Vibrating Probe to Measure Charge Build up on an Insulator," ENGR 430 Project, January 1984-September 1984.

5. Ken Foo, "Study of Partial Discharge Characteristics in Lineman Rubber Gloves," EECE 499 Project, January 1986-May 1986.

6. Stanley Artis, "DC Flashover Along Conical Frustrum Shaped Insulators in Vacuum," EECE 499 Project, January-May l987.

7. William Flake, "AC/DC High Voltage Power Supply," EECE 499, Fall '89. 8. Joyce Williams, "Growth of Dense Oxide Layers on Silicon," EECE 499, Fall '89. 9. Bryan Wilson, "Design and Testing of a Test System to Study Breakdown Properties of Dielectric Fluids,"

EECE 499, Spring 1990. 10. Keith Byrd, "High Voltage Diagnostic System for the Study of Breakdown of Dielectric Fluids," EECE

499, Spring 1990.


11. Raiford Bonnell, "Study of Correlation between Surface Condition of Alumina Insulators and Breakdown Characteristics in Compressed N2 Gas," EECE 499, July 1990.

12. Michael Stringer, "Trip Circuit for the 100 kV DC Power Supply," EECE 499, Spring 1990. Also, Lab technician.

13. Manaswee R. Vaidya, "Contact Metalization and Encapsulation of High Purity of Silicon Wafers for Improving Surface Breakdown," EECE 499 project, May-1991.

14. Greg Nance, 1991. Lab technician. 15. Christopher LeCuir, "Triggering of the Marx Generator and Synchronization of the Streak Camera," August

1991. 16. Scott Wintzler, "Trigger Circuit for Spark Gaps," 1991 17. Rick Shoop, "High Voltage RF Generation," 1991. Lab technician. 18. Brian Slader, "Simulation, Design, Fabrication, and Testing of a Compact Marx Generator," EECE 499

project, May 1994. 19. Robert Anderson, "Measurement Control," EECE 499 project, May 1994. 20. Ronald Anderson, “Measurement of Minority Carrier Lifetime and N-Type Silicon,” EECE 499 project,

May 1995. 21. Donald Crankshaw, "Computer Simulation of Electric Field Distribution in Lateral Device Test Structures,"

1995-96. Won NSF and Tau Beta Pi fellowships, left to pursue PhD at MIT. 22. Josh Gleaton, "Virtual Instrument Data Acquisition System for the Spectra-Physics Pulsed Nd:Yag Laser

System," EECE 499 project, 1996. 23. Brian Lawrence, "A Variable High-Voltage Square Pulse Generator," EECE 499 project, 1996. 24. Philip Schoon, "Temperature Control System for High Temperature SiC Growth Furnace," 1996-1998. 25. Robert Galop, "Thermal Modeling of SiC Growth Furnace," 1998. 26. Adrian Gradinaru, "High Field Characterization of GaN Heterostructures," 1998. 27. Mat Parker, "Computer Interfacing of SiC Growth Furnace," 1999-2000. 28. Jeff Derrick, "LabView Development for SiC Growth Furnace Pre-Control," 1999. 29. Oshibar Hardman, "SiC Wafer Surface Preparation," 1999-2000. 30. Josh Parker, "Development of an Automatic Si Wafer Scanning System for SiC Defect Mapping," 2000. 31. Omkar Jani, "SiC Furnace Construction," Jan. 2000 – present. 32. Mat Parker, "Image Processing/Pattern Recognition of Defects in SiC Wafers," ELCT 499 project, fall

2000 – spring 2001. 33. Corey Garriott, “Thin film deposition by electron beam” Oct. 2001- Jan 2003. 34. DeMario Sistrunk, “SiC Wafer Scale Electrical characterization,” Nov 2002-May 2003. 35. Anand Patel, “Porous SiC for biomedical applications,” May 2003 – Aug. 2003 36. Amelia Bogart, “Biocompatibility of SiC,” May 2003 – August 2004. 37. Robert Kennedy, “Grinding and Slicing of SiC boules,” May 2003 - Dec. 2004. 38. Robert Kennedy, “High Temperature CVD Furnace Control,” ELCT 499, Fall 2004. 39. Eric Moulton, “SiC Defect Characterization by Polarized Light Microscopy,” May 2005 to Aug. 2006.

Winner of 2006 Maggellen Award for Undergraduate Research. 40. Fred Bartholomew, "Computerized Control Interface for a Hot-Wall CVD Reactor,'" May – Sept. 2005. 41. Travis Williams, "Minority Carrier Lifetime Measurements in SiC using Photoluminescent Decay," May –

Sept, 2006. 42. Kevin Daniels, "Slicing, Lapping, and Polishing of SiC Device Fabrication and Testing," January 2005 to

present. 43. Alan Nuchnoi, "Characterization of SiC Devices," Sept. 2006 to present. 44. Matt Zimmerman, “Fabrication and characterization of SiC Devices”, Feb. 2007 to May 2009. 45. Kevin Daniels, “Defect Correlation of Schottky Based SiC Devices Using Eutectic Method of KOH

Etching”, ELCT 499, August 2007 – December 2007. 46. Kevin Daniels, Winner of Magellan Award for Undergraduate Research, Spring 2007, “Defect Correlation

of Schottky based SiC Devices using new form of KOH Etching.” 47. Matt Zimmerman, “Formation of Porous Silicon Carbide and Porous Silicon Carbide Powder,” ELCT 499,

January 2008 to May 2008. 48. Sadia Khan, Develop curriculum, presentations, and lab prototypes for 2009 Summer Camp for High

School students, May 2008 to present.


49. Herney Gonzalez, Construction of Solar Panel power source, March 2008 to present. 50. Matt McCoy, Labview Software to implement Solar Energy Power Generation Monitoring, December 2008

to present. 51. Trey Daniels, Solar Powered Water Purification System, October 2008 to present. 52. Leo Perkins, Energy Audit of the Swearingen Building, January 2009 to May 2009. 53. Josh Smith, “To design, build, implement and document Subsystems and Systems for Energy Monitor and

reduced use of energy in the Engineering Building”, from March - June 2009. 54. Zeiglor Laney, “Investigation of Interface Traps in SiC MOSFETs”, November 2008 to 2011. 55. Nadir Khalfay, “Power bicycle, Muscle wire, Coulomb’s Force Law, etc. demos for ELE and Arduino as a

201 project. 56. Calvin Pope, “Develop Novel Demonstration Projects for recruitment of high school students.” January

2009 to2011. 57. Gabriel Brown and Robert Drayer, “Fabrication and Implementation of Filter Media to Remove Heavy

Metals from Influent Water,” developed into ELCT 499 project, September 2010 to December 2011.

SEMINARS AND TECHNICAL PRESENTATIONS

1. "Prebreakdown Phenomena in Solid Insulating Spacers Used in High Voltage High Vacuum Apparatus," High Voltage Engineering Department, Indian Institute of Science, Bangalore, India, August l973.

2. "Flashover of Solid Insulators in Vacuum," IEEE, Montreal/Ottawa Chapter of Electrical Insulation Group, Ottawa, Canada, March l975.

3. "Electrical Insulation Studies in Vacuum," Oak Ridge National Laboratory, Thermonuclear Division, Oak Ridge, TN, USA, June l975.

4. "Aging by Partial Discharges in Solid Insulation Used in Underground Power Cables," High Voltage Engineering Department, Indian Institute of Science, Bangalore, India, July l976.

5. "High Voltage Insulation of Solid Dielectrics in Vacuum; Long Term Deterioration of Solid Insulators used in Underground Power Cables," Texas Tech University, Lubbock, Texas, USA, October, l978.

6. "Electrical Insulation in High Vacuum Devices and Underground Power Cables," University of South Carolina, Columbia, SC, USA, March, l979.

7. "High Voltage Engineering Research at USC". Indian Institute of Science, Bangalore, India, July 4, 1983. 8. "Interfacial Phenomena in Compressed Gas Systems," TVA, Electrical Systems Group, Chattanooga, TN.,

Oct. 7, 1983. 9. "Partial Discharge and Breakdown Characteristics in MLC Capacitors," AVX, Myrtle Beach, Oct. 21,

1983. 10. "High Voltage Research at U. S. C.," Central Power Research Institute, Bangalore, India, May 11, 1984. 11. "Partial Discharge Characteristics in Barium Titanate Capacitors," Indian Institute of Science, Bangalore,

India, June 4, 1984. 12. "Surface Flashover in Compressed Gases," Gas Cable Sub-committee meeting, Electric Power Research

Institute, MIT, April 12, 1985. 13. "Surface Flashover in Compressed Gases," Gas Cable Sub-committee meeting, Electric Power Research

Institute, U. S. C. Columbia, SC, May 8, 1986. l4. "Basic Investigations of Electronic Processes in the Breakdown of Compressed Gas - Solid Dielectric

Interfaces," Sandia National Labs., Oct. 2-3, l986. l5. Organized workshop on "Flashover Phenomena Along Dielectric and Photoconducting Materials," Feb. 25-

26, l986, Columbia, S. C., sponsored by O. N. R.-S. D. I. pulse power program. 16. Presented a series of 4 seminars, including one sponsored by the IEEE Bangalore (India) chapter at the

Indian Institute of Science, Bangalore, India, May. 15-25, 1987. Topics included: a) avalanche measurements in PMMA insulated N2 gas gaps. b) insulator DC flashover studies in vacuum. c) studies on feedthrough insulators for TWT applications, d) pulse power switching.

17. "Laser initiated surface flashover switching in compressed N2 gas, and Insulator breakdown phenomena in Vacuum," Old Dominion University, Norfolk, Va.. April 15, 1988.

18. "Pulsed surface breakdown along high purity silicon in vacuum," Physics and Astronomy Dep't, U. S. C., Feb. 17, l989.


19. "Pulse Power Research at the University of South Carolina," (invited lecture), Indian Institute of Science, High Voltage Engineering Dept., Bangalore, India, November 30, 1990.

20. "Role of Test Procedure and Surface Treatments on the Surface Flashover Performance of Ceramic Insulators," Thomson CSF, Paris, France, Sept. 1, 1992.

21. "High field Surface Breakdown Issues in large Band Gap Materials," Materials Research Center, NC State University, Nov. 20, 1992.

22. "Quality Issues related to Photoconductive High Voltage Switches," Indian Institute of Science - High Voltage Engineering Department, Bangalore, India, Dec. 28, 1992.

23. "Surface Coatings and Other Parameters that Influence the High Field Performance of Dielectric Materials in High Vacuum," DOE, Continuous Electron Beam Accelerator Facility, Newport News, VA, Jan. 12, 1993.

24. "Commercially Viable Silicon Carbide Device Technology Development," presentation to Dr. M. Mazzola from NSWC and Dr. S. Saddow from ARO, May 1993:

25. "Viability of Diamond and SiC for High Voltage/High Field Devices," BMDO, presentation to Dr. D. Duston and Col. P. Rustan, Pentagon, May 1993.

26. "Dielectric Materials for Electrostatic Separators," presentation to Dr. William Kalbrier from CERN, Geneva, May 1993.

27. "High Field Studies in SiC," ONR, Dr. M. Yoder, Washington, DC, June 1993. 28. "Proposed Investigations on Synthetic Diamond and SiC," presentation at DNA to Dr. R. Gullickson, A.

Manriquez, and A. Fahey, Washington, DC, June 1993. 29. "Materials Research for Improving the Dielectric Strength of High Power RF Windows," presentation made

at SURA headquarters in Washington, DC., and several presentations at DOE, Germantown, June 1993. 30. "SiC Research for Power Electronic Device Applications," Westinghouse Corp., Pittsburgh (seminar), July

1993. 31. "Need for High Performance Ceramics in High Field Applications," AlSiMag Technical Ceramics, Inc.,

Laurens, SC (seminar), July 1993. 32. "High Field Studies in Synthetic Diamond for High Temperature Power Electronic Devices," presentation

to Dr. K. Das and colleagues visiting from Kobe Steel, RTP, Raleigh, July 1993. 33. Gave the following seminars in 1993 in Japan on the general topic, "High Electric Filed Phenomena in

Dielectric and Semiconducting Materials": a) Aug. 19: Ibaraki University, Ibaraki b) Aug. 19: Hitachi High Voltage Laboratory, Hitachi-Shi c) Aug. 20: Toshiba Corp. d) Aug. 21: Kyoto University e) Aug. 24: Musashi Institute of Technology f) Aug. 26: Saitama University g) Aug. 27: NEC Corp. 34. "High Field Performance of Photoconducting Si Wavers," Auburn University (seminar), Sept. 1993. 35. "Recent Breakthroughs in PC Silicon," presentation at Pentagon, Col. Pete Rustan, Oct. 1993. 36. New Investigations on Wide-Bandgap Semiconductors," presentation to Dr. Max Yoder, ONR,

Washington, DC, Dec. 1993. 37. "High Field Effects in Alumina Ceramics," presentations to Dr. L. Goldberg and Dr. A. Bhalla, NSF,

Washington, DC, Dec. 1993. 38. "Ceramic Materials for RF Windows," presentation to Dr. P. Kneisel and T. Powers from CEBAF, Jan.

1994. 39. "Research in the Laboratory for High Field Effects in Materials," presentation to Mr. H. Apkarian, CEO of

Mechanical Technology, Inc., Latham, NY, Jan. 1994. 40. "High Performance Ceramics for RF Windows," presentation to Dr. D. Henkel and Dr. Viswanathan, ASM,

Inc., Hampton, VA, March 1994. 41 "Failure of Ceramic RF Windows," presentation to Dr. T. Quadir and Mr. J. McGinnis from AlSiMag

Technical Ceramics of Laurens, SC, March 1994. 42. "Macro-Spacer Performance under High Fields; Design and Process Parameters," SI Diamond Technology

and MCC, Austin, TX, April 21, 1994 (seminar).


43. "High Field Performance of Single Crystal SiC - Preliminary Results," and "Future Research on the High Field Characteristics of Wide Bandgap Semiconductors," presentation to Dr. D. Duston and Col. P. Rustan, BMDO/IST, Washington, DC, April 26, 1994.

44. "Future Directions of Materials Research at USC," presented to Dr. L. Goldberg, Dr. A. Harvey, and Dr. L. G. Salmon, NSF, Washington, DC, April 26, 1994.

45. "Micro-Spacer Technology for FEDs," briefing to D. Slobodin, ARPA, April 28, '94. 46. "Influence of Ceramic Surface Processings on the High Field Performance," presentation to Dr. A. Bhalla,

Dr. V. Hess, NSF, Washington, DC, April 28, 1994. 47. "Influence of Surface Processing Treatments on the High field Characteristics of Ceramics in Vacuum,"

Indian Institute of Science, Bangalore, India, June 2, 1994 (seminar). 48. "Current Status of materials Research at USC and Future Directions of Research in SiC," CREE Research,

Inc., NC, July 28., 1994 (seminar). 49. "Most Recent and Current Investigations of High Field Phenomena in Alumina Ceramics," CEBAF,

Newport News, VA, Sept. 30, 1994 (seminar). 50. "Current Status of Materials Research at USC and Future Directions," ARO, Research Triangle Park, NC,

June 15, 1994 (seminar). 51. "Current Status of Materials Research at USC and Future Directions of Research in Nitrides," Dr. Asif

Khan, APA Optics, Sept. 16, 1994 (seminar). 52. "Wide Bandgap High Power Electronics," Dr. D. Duston, BMDO/DNA, Oct. 31, 1994 (presentation). 53. "Micro-spacer Insulation and e-emission Characterization Issues in FEDs," Dr. D. Slobodin, ARPA, Nov. 7,

1994 (presentation). 54. "High Field Characteristics of SiC for High Temperature Power Electronic Devices," Dr. Deborah

Crawford, NSF/ECS Dvn., Nov. 7, 1994 (presentation). 55. "Proposal for Development of a Compact Cable Termination" (presentations): a) Dr. Mujib Rahman and Mr. Paul Cinquemani, Pirelli Cable Corp., Lexington, SC, Jan 9, 1995. b) Virginia Electric Power Co., Richmond, VA, Jan. 11, 1995. 56. "High Field Characteristics of SiC and Nitrides for High Power Electronic Devices" (presentations): a) Col. Gernot Pomrenke, AFOSR, Bolling AFB, Nov. 21, 1994. b) Dr. Jane Alexander, ARPA, Feb. 14, 1995. c) Dr. Kepi Wu, BMDO/IST, Feb. 21, 1995. 57. "Dc vs. Pulsed Methods of Characterizing Electron Emission from Small-Gap Cold Cathodes"

(presentations): a) Dr. Dave Slobodin, ARPA, Feb. 14, 1995. b) Dr. Max Yoder, ONR, Feb. 21, 1995. 58. "Capabilities, Current Status, and Future Directions of Materials Research at the USC Laboratory for High

Field Effects in Materials," a) Presentation at USC to Dr. Kim Ritchie, V. P., AVX Corp., Jan. 26, 1995. b) Seminar to the Thin Film Division, AVX Corp., Myrtle Beach, May 9, 1995. 59. “Materials Research at the Laboratory for High Field Effects in Materials, USC,” Taganrog State University

of Radio Engineering, May 17, 1995 (seminar). 60. “Electrical Characterization of Wide Bandgap Semiconductors for Next-Generation Power Microwave

Devices,” BMDO Workshop on High Power Electronics Technology, Rockwell Science Center, Thousand Oaks, California, May 31-June 1, 1995.

61. “Breakdown Studies of High Resistivity SiC; Lateral and Vertical Structures Devices,” Presentation to Dr. Bill Mitchel, Wright Patterson Air Force Labs, June 20, 1995.

62. “High Field Characterization of Nitride Devices for High Power Microwave Application,” BMDO/US Army SSDC Workshop on High Power Electronics Technology, Crystal City, VA, July 6, 1995.

63. “High Field Characterization of Nitride Devices for High Power Electronics Technology,” BMDO/US Army SSDC Workshop on High Power Electronics Technology, USC, Columbia, SC, Aug. 8-9, 1995.

64. “High Field Conduction and Breakdown in Semi-Insulating Si and SiC Device Test Structures,” Physics Dept., Auburn University, Sept. 29, 1995 (seminar).

65. The following seminars were given in China (Mainland): a) North China Electric Power University, Beijing: i) "Current Research and Some Future Directions of Research at USC Laboratory for High

Voltage/High Power Electronics," Dec. 20, 1995.


ii) "High Power Microwave Device Issues based on Wide Bandgap Semiconductors," Dec. 21, 1995.

iii) "High Field Conduction and Breakdown of Semi-Insulating Si and SiC," Dec. 22, 1995. iv) "Solid Dielectric Electrical Insulation in Vacuum for High Voltage Applications," Dec. 25,

1995. b) Tsinghua University, Beijing: "Recent Research and Future Research Trends at USC Laboratory for High Voltage/High

Power Electronics," Dec. 26, 1995. 66. "High Voltage Characterization of 4H SiC p-n Junctions, 6H SiC MOS Structures, and High Temperature

Characteristics of Semi-Insulating SiC" (presentations to): a) Dr. D. Duston, BMDO, March 11, 1996. b) Dr. J. Alexander, ARPA, March 11, 1996. c) Dr. Max Yoder and C. Wood, ONR, March 27, 1996. d) Dr. Elliot Brown and Col. G. Pomrenke, ARPA, March 27, 1996.

67. “High Field Characterization of Nitride Devices for High Power Electronics Technology,” BMDO/US Army SSDC workshop on GaN microwave power amplifiers, Minneapolis, August, 1996.

68. "High Field Characterization of GaN-HFETs," BMDO/US Army SSDC workshop on GaN microwave power amplifiers, San Diego, 12/18-19/96.

69. "High Field Performance of Dielectric Spacers in Vacuum: Microspacer Investigations for Field Emission Displays," Motorola Flat Panel Display Division, Tempe, AZ, 12/9/96 (seminar).

70. "Status of Silicon Carbide Research at the University of South Carolina," Wright Patterson Air Force Base, Materials Directorate, 2/28/97 (seminar).

71. "Microspacer Insulation for Field Emission Displays," DARPA High Definition System (HDS) Information Exchange Conference, Washington, DC, 3/25/97.

72. "Silicon Carbide-Related Research at USC." Presentation to Dr. Adrian Kogan and Dr. R. Bommakanti from Raychem Crop., Sept. 29, 1997.

73. "Prebreakdown and Breakdown Performance of Micrometric Vacuum Gaps for FEDs," Microelectronics Corp. of North Carolina (MCNC), Research Triangle Park, NC, Oct. 13, 1997.

74. "Silicon Carbide Film Growth and Processing Issues," Presentation to Dr. David Miller, Dr. Joseph Rutherford, and Mr. Walter Dwyer. Litton Industries, Airtron Dvn, October 24, 1997.

75. "Breakdown Phenomena in AlGaN/GaN HFETs," BMDO/US Army SSDC Workshop on the GaN Microwave Power Amplifier Program, Cal Tech, Pasadena, Nov. 4 and 5, 1997.

76. "Silicon Carbide Thick-Film Epitaxy, Device Processing and Characterization Studies at USC," Litton Industries, Airtron Division, Electronics Materials Group, Morris Plains, New Jersey, Nov. 19, 1997 (seminar).

77. "Prebreakdown and Breakdown Phenomena in Vacuum Gaps relevant to Field Emission Displays," MIT Lincoln Laboratory, Boston, MA, March 9, 1998.

78. "Spacer Breakdown Performance in Field Emission Displays," Motorola Flat Panel Display Dvn., Tempe, Arizona, June 5, 1998.

79. "High Voltage/High Field Breakdown of Insulators in Vacuum: an Overview," presented at NRL, June 22, 1998, Washington, DC.

80. "Silicon Carbide Research at USC" AXT Corp, San Francisco, June 2, 1999. 81. "Silicon Carbide Crystal Growth and Material Processing," Xidian Univ., Xi'an, P. R. China, Oct. 2000.

82. “Electrical Insulation and Breakdown Issues in Vacuum Microgaps," Glimmerglass Networks, Hayward, CA, Aug. 31, 2001.

83. "SiC Growth, Modeling, Material Characterization, Material and Device Processing," General Electric Corporate Research Headquarters, Schenectady, NY, Dec. 12, 2001.

84. DARPA, Dr. Zolper, “Status of SiC research at USC” Nov. 26, 2003 85. “Hot-wall CVD epi-growth of 4H-SiC using PVT buffer layer,” with Gao, Zhang, Ma and Khlebnikov,

TMS, 2003, Salt Lake City, UT, June 25-27, 2003. 86. GE Corporate Research Center, “Degradation of SiC pin diodes and its alleviation,” Jan. 6, 2004. 87. Wright Air Force Laboratory/Northrop Grumman, “Non-destructive SiC wafer characterization” Feb 6,2004. 88. Army Research Laboratory, Adelphi, MD, “SiC crystal growth and device-related investigations at the

University of South Carolina,” July 26, 2005.


89. Naval Research Labs, Washington, DC, “Challenges in the development of non-degrading SiC p-i-n diode,” Aug. 9, 2005.

90. Air Force Office of Scientific Research, Washington, D. C. (Dr. Don Silversmith), "Performance-Limiting Defects in 4H-SiC Power Devices," June 9, 2006.

91. Naval Research Labs, Washington, D. C. (Drs. Caldwell, Gaskill, and Wood), "Efficient Conversion of Basal Plane Dislocations to Threading Edge Dislocations in SiC Epitaxy," July 6, 2006.

92. Army Research Office, Research Triangle Park, N.C. (Dr. John Prater), "Correlation between Defects and Device Characteristics of 4H-SiC Schottky and PiN Diodes," July 19, 2006.

93. Cree Research, Research Triangle Park, N.C., "Long Term Reliability of 4H-SiC Schottky Diodes," July 19, 2006.

94. Cree Research, Research Triangle Park, N.C., "Degradation Phenomena in SiC BJTs," Sept. 25, 2006. 95. Cree Research, Research Triangle Park, N.C., “Design and Optimization of Junction Termination Extension

(JTE) for SiC High Voltage p-i-n diodes using HT Boron Diffusion”, Jan. 19, 2007. 96. Rutgers University School of Engineering, Piscataway, Irons Endowed Lecture Series, “Influence of

Crystallographic Defects Limiting the Performance of SiC Schottky Barrier and Bipolar Devices,” March 21, 2007.

97. Cree Research, Research Triangle Park, N.C., “SiC BJT Degradation Phenomena, May 25, 2007. 98. Cree Research, Research Triangle Park, N.C., “Summary and Updates on Cree Supported Projects”, Dec.

19, 2007. 99. Office of Naval Research, Dr. Paul Maki, SiC Epitaxy and Device-defect Correlation Studies”, June 6,

2008. 100. Office of Naval Research, Dr. Scott Coombe, Growth of Thick Epitaxial Layers on 4H-SiC Substrates

Using Chlorine Chemistry for High Power Applications, April 6, 2009. 101. “Synthesis and Dielectric Characterization of Polystyrene Composites Containing Surface-Modified

Titanates and Novel Mixed-Metal Phosphonates,” by Yogesh K. Anguchamy, Shiva Balasubramanian, P. A. Barber, T. Sudarshan, H-D. zur Loye, and H. J. Ploehn, American Institute of Chemical Engineers meeting, November 9, 2009.

102. “Development of High Quality 4H-SiC Thick Epitaxy for Reliable High Power Electronics Using

Chlorinated Precursors,” ONR Energy Conversion D&I Program Review, T. S. Sudarshan, MVS Chandrasekhar, F. Zhao, K.C. Mandal, H. Song, I.A. Chowdhury, T.A. Rana, S. Omar, September 29, 2010.

103. “Development of High Quality 4H-SiC Thick Epitaxy for Reliable High Power Electronics Using Chlorinated Precursors,” ONR presentation, T. S. Sudarshan, MVS Chandrasekhar, Haizheng Song, Tawhid A Rana, Sabih U Omar, October 4, 2011.

104. “Development of High Quality 4H-SiC Thick Epitaxy for Reliable High Power Electronics Using Halogenated Precursors,” ONR presentation (presented at USC), T. S. Sudarshan, MVS Chandrasekhar, Haizheng Song, Tawhid A Rana, Sabih U Omar, August 6, 2012.

COLLABORATION AND VISITS

• Continuous Electron Beam Accelerator Facility (CEBAF) - DOE facility in Virginia • Naval Surface Warfare Center, Dahlgren, VA • Sandia National Labs, Albuquerque, NM • Grumman Corporation, Electronics System Division, Princeton, NJ • Electric Power Research Institute, in both Knoxville, TN, and Palo Alto, CA • Thomson CSF, France • Toshiba Corporation, Japan European Space Agency, the Netherlands • French Atomic Energy Commission, Paris • Dornier GmbH., Germany • SI Diamond Technology, Inc. • Litton Industires, Airtron Division, New Jersey • General Electric Corporate Research Headquarters, Schenedtady, NY


• Rockwell Scientific Co. LLC, Thousand Oaks, CA • NOVASiC, France • SUNY, Stony Brook, NY • Naval Research Lab, Washington, DC • Wright Airforce Lab, Dayton, OH • Army Research Lab, Adelphi, MD • Case Western Reserve University, Ohio • SUNY at Stonybrook, NY

UNIVERSITY SERVICE

• Hosted, at the request of the Provost’s office, the Duke Energy Executive in Residence Program , a day-long event of meetings, lunch, visits, and seminar; Mr. James Stanley was the Duke Executive participating, October 6, 2011.

• Visited India with American Delegation of International Academic Partnership Program to build linkages between India and the United States, November, 2010.

• Computer Science and Engineering Search Committee Co-Chair, October 2009 to December 2010. • Focus Carolina, Chairman, Teaching and Learning Committee, Jan. 2009 to 2010 • Completed Memorandum of Understanding Academic and Research Collaboration between USC and

The Indian Institute of Techanology (IITM in Madras, India, March 2008. • Mechanical Engineering Search Committee, Chairman, September 2006 to November, 2007. • General Education at the University of South Carolina: Team Leader for Scientific Literacy and

Technological Skills, Nov. 2006 to December, 2007. • Michael J. Mungo Distinguished Professor Selection Committee, 2006 – present • Engineering Dean Search Committee, Co-chairman, May 2005, Feb. 2006 • Search Committee for the nanoelectronics hire for the Nanocenter, Sept. 2005-Mar. 2006 • Search Committee for the Director of USC Nanocenter, Nov. 2004-June 2005 • EE Department Program Committee, Chairman, Feb. 2004, to September 2006 • Southeast Alliance for Graduate Education and the Professoriate (SEAGEP), June 2004 to present • Dean (White) Review Committee, August-December 2003 • Graduate & Research Committee (1992-present), Chairman (1992-1999), member (2000-September 2006) • Member of the Provost's Science, Mathematics, and Engineering Faculty Research Award Selection Panel

(Russell and USC Educational Foundation Research Awards) (1994-96) • T&P Committee of the Chemical Engineering Department to evaluate associate professors, 1994-1999. • ECE representative for the Dean's Research Advisory Committee (1988-June 2000) • ECE Department, T&P Committee, Chairman (1989-90; April 2000-present) • Dean's Ad Hoc Committee on Chairs/Professorships (1993-1999) • ECE Department Mission and Organization Committee (Goals Committee) (1988-95), Chairman (1994-95) • College-wide Civil Engineering Review Committee (1995-96) • College of Engineering Academic Affairs Committee (Aug. 99 to May 2000) • Member of Faculty Advisory Council for the Vice President for Research (September 2000 to August 2002) • EE Department T&P Committee Chairman (April 2000 to 2002) • College of Engineering Research Achievement Award Committee (2002) • COE Carolina Distinguished Professorship Review Committee, Chairman (Dec. 2002-Jan 2003) • ECE committee member for the Dean's Review Board (Aug. 2003 to 2004) • Member, Advisory Board, Innoventure, annual forum to support SC companies, Jan. 2006 to 2009

educational record3. m.sc. physics (solid state) june, 1970 university of mysore, mysore, india . 4....

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