zinc oxide nanofluid ink for printed electronics · 2017-05-23 · zinc oxide nanofluid ink for...
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Zinc oxide nanofluid ink for printed electronics
K. S. Suganthi, K. Harish, and P. Swaminathan*Department of Metallurgical and Materials Engineering, IIT – Madras, Chennai 600036
Email: swamnthn@iitm.ac.in
MOTIVATION
• Employment of colloidal dispersions of functional nanomaterials has gained importance in printed electronics
• The colloidal dispersions of solid nanoparticles (diameter < 100 nm) in liquids are known as nanofluids
• By appropriate choice of nanomaterial and surface functionalization, these nanofluids can be employed in printed electronics
• The primary challenge is to prepare stable dispersions of oxide nanoparticles (nanofluids)
Synthesis of ZnO nanoparticles
Two step method Ethylene glycol as base fluid No dispersant Bath ultrasonication
Formulation of ZnO nanofluid
Bandgap:
3.23 ± 0.75 eV
Direct writing
Custom made direct writer, CFI, IITM
ZnO-EG printed on glass slide
Direct writer
Pass 1 Pass 2 Pass 6Pass 3
40 °C 50 °C 60 °C
40 °C 50 °C 60 °C
Effect of number of passes
Effect of substrate temperature
ZnO-EG printed on photopaper
Effect of substrate temperature
CONCLUSIONS: ZnO nanoparticles synthesized using chemical precipitation
method ZnO-ethylene glycol nanoink prepared using bath ultrasonicaiton ZnO nanoink printed over different substrates using direct writer Single and double passes resulted in continuous patterns Higher substrate temperature helped in faster drying of the
printed lines Printed patterns will be further investigated for their electrical
performance
REFERENCES:
1. A. Kamyshny, J. Steinke and S. Magdassi, The Open Applied PhysicsJournal, 4 (2011) 192. S.U.S. Choi, in Developments and Applications of Non- Newtonian Flows,edited by D.A. Singer and H.P. Wang, American Society of MechanicalEngineers , Fluids Engineering Division (Publication) FED, San Francisco,USA, (1995) 993. J. Perelaer, P.J. Smith, D. Mager, D. Soltman, S.K. Volkman,V. Subramanian, J.G. Korvink and U.S. Schubert, Journal of MaterialsChemistry, 20 (2010) 8446
ACKNOWLEDGEMENTS:This research work has been supported by Institute postdoctoral fellowship, Indian institute of Technology Madras, Chennai.
Crystallite size:
32 ± 3 nm
3223 NaNO2OHZnNaOH2NOZn
OHZnOOHZn 22
300 mm 50 mm 10 mm
40 °C 50 °C 60 °C
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