mit solar exitons
TRANSCRIPT
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The MIT Energy InitiativeCarmel Rotschild
Massachusetts Institute of TechnologyDepartment of Electrical Engineering & Computer Science
[email protected]://softsemi.mit.edu
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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
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• 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
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Research
Education
Campus Energy
The MIT Energy Initiative
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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
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Campus Energy Spotlight: Monitor, Inform, Save $$
Example #2:Fume hoods
Example #1:Lighting
Department of Chemistry expects to save around $100K annually!
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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)
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DOE Energy Frontier Research Center
Head of center: Prof. Marc Baldo
exciton—a localized excited state characteristic of disordered and low-dimensional materials.
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LUMINESCENCE SOLAR CONCENTRATORS
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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)
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•Separation of optical and electrical properties
LSC advantages
Localized excitons Long range order
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•Simple construction using low cost materials
LSC advantages
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•No expensive sun-tracking system
LSC advantages
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•Minimal heating
LSC advantages
7.0
2
≈−=∇
γγITk
η :−0.5%/°C
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•Collect diffused light
LSC advantages
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•Defect tolerant
LSC advantages
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•Improved open circuit voltage
LSC advantages
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•A pre-P.V. platform for optical manipulation
LSC advantages
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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?
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Energy Internships Available for MIT Students (undergraduates and graduates) and Recent Alumni
[email protected]/misti
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MISTI MIT-Israel Collaborating Organizations (partial list)
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LUMINESCENCE SOLAR CONCENTRATORS
Carmel Rotschild Massachusetts Institute of Technology
Department of Electrical Engineering & Computer [email protected]
http://softsemi.mit.edu