mit solar exitons
TRANSCRIPT
The MIT Energy InitiativeCarmel Rotschild
Massachusetts Institute of TechnologyDepartment of Electrical Engineering & Computer Science
[email protected]://softsemi.mit.edu
The MIT Energy Initiative
[A] great opportunity, and agreat obligation, is ourinstitutional responsibility toaddress the challenges ofenergy and the environment …it is our responsibility to leadin this mission.
MIT President Susan Hockfield
“
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Carmel Rotschild Massachusetts Institute of Technology
Department of Electrical Engineering & Computer [email protected]
http://softsemi.mit.edu
• Focal Area of Research and Education 200 (of 1000) faculty working in energy
• Vibrant Student Community1700+ member MIT Energy Club
• Active EntrepreneurshipCompanies forming, MIT Clean Energy Prize, …
• Key PartnersWorking with industry, government, NGOs, …
• Alumni EngagementMentoring students and new ventures, …
The MIT Energy Scene
Research
Education
Campus Energy
The MIT Energy Initiative
Core Curriculum: One class from each category
• Energy Science Foundations(fundamental principles that govern energy sources, conversion, uses)
• Social Science Foundations of Energy(social science tools that explain human behavior in the energy context)
• Energy Technology/Engineering in Context(application of laws and principles to specific energy context)
Education Spotlight: Undergraduate Energy Minor
Campus Energy Spotlight: Monitor, Inform, Save $$
Example #2:Fume hoods
Example #1:Lighting
Department of Chemistry expects to save around $100K annually!
Research Spotlight: Solar Energy
• Eni-MIT Solar Frontiers Center:Key research in thin films, solar thermal, water splitting,…
• Solar Revolution Project (SRP):Philanthropy for early-stage, breakthrough science and eng.
• U.S. Department of Energy:2 Energy Frontier Research Centers (Exitonics, Thermoelectrics)
DOE Energy Frontier Research Center
Head of center: Prof. Marc Baldo
exciton—a localized excited state characteristic of disordered and low-dimensional materials.
LUMINESCENCE SOLAR CONCENTRATORS
Photon Transport
LSC Description and Operation
Photoluminescent Dyes
Waveguide
Mirrors
Photovoltaic
h
L
LhL
cellsolarofAreacollectorofAreaG
2
==
Solar ExcitationPhotoluminescence
‘LUMINESCENT SOLAR CONCENTRATOR’•W. H. Weber and J. Lambe, Applied Optics 15, 2299 (1976)•A. Goetzberger, W. Greubel, Applied Physics 14,123 (1977)
•Separation of optical and electrical properties
LSC advantages
Localized excitons Long range order
•Simple construction using low cost materials
LSC advantages
•No expensive sun-tracking system
LSC advantages
•Minimal heating
LSC advantages
7.0
2
≈−=∇
γγITk
η :−0.5%/°C
•Collect diffused light
LSC advantages
•Defect tolerant
LSC advantages
•Improved open circuit voltage
LSC advantages
•A pre-P.V. platform for optical manipulation
LSC advantages
MISTI MIT-ISRAEL PROGRAMMIT International Science and Technology InitiativesHands-on Learning in a Global Laboratory
israel-http://web.mit.edu/misti/mit
Coordinator: David Dolev, [email protected]
Do you want an MIT student to do a summer project in your company?
Energy Internships Available for MIT Students (undergraduates and graduates) and Recent Alumni
[email protected]/misti
MISTI MIT-Israel Collaborating Organizations (partial list)
LUMINESCENCE SOLAR CONCENTRATORS
Carmel Rotschild Massachusetts Institute of Technology
Department of Electrical Engineering & Computer [email protected]
http://softsemi.mit.edu