June 17, 2013 Presentation Outline GOAL: Help you understand how to - - PowerPoint PPT Presentation
Solar Technology Trends in Semiconductors, Multijunction Cells and CPV Danny Gold Project Engineer Office 212-991-2141 Mobile 347-415-5903 E-mail: danny.gold@aecom.com June 17, 2013 Presentation Outline GOAL: Help you understand how to
Solar Technology Trends in Semiconductors, Multijunction Cells and CPV
Danny Gold Project Engineer Office 212-991-2141 Mobile 347-415-5903 E-mail: danny.gold@aecom.com
June 17, 2013
Source: www.bpc.edu
Si Si Si Si Si Si Si Si Si Si P-N Junction P N B Si Si Si Si Si Si Si Si P Si Si Si Si Si Si Fermi energy = that energy in the photon from the specific point in the spectrum = the energy needed to knock the electron from one shell to another
Its high school chemistry! Remember valance shells of electrons? 1S(2), 2S(2), 2P(6), 3S(2), 3P(2) = Silicon! 2 + 2 + 6 + 2 + 2 = 14
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What’s been happening with pricing?
Source: Paula Mints, Navigant, Solar Services Program
Silicon Shortage (second most abundant element on Earth) Why a shortage? In my life I have had
And thus needed
Now I need ~20 modules Each with 60 wafers, or 1200 wafers, 3 orders of magnitude more of this material
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Standard Industry Module Cost Eurocents/Watt
Source: Photovoltaic (PV) Pricing Trends: Historical, Recent, and Near-term Projections, D. Feldman, G. Barbose, R. Margolis, R. Wiser, B. Darghought, A. Goodrich., NREL, LBNL, Nov. 2012.
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Si
P-N Junction P N
Fermi energy = that energy in the photon from the specific point in the spectrum = the energy needed to knock the electron from one shell to another
Si Si Si Ga Si In Si Si Si Si Si Si As Si Si Si Si Si
P-N Junction P N
Si Si Si Ga Si I n Si Si Si Si Si Si As Si Si Si Si Si
P-N Junction P N
Si Si Si Ga Si In Si Si Si Si Si Si P Si Si Si Si 7
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Wafers Cells Modules
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Soitec, France’s Intel SolarJunction – Stanford Spinoff Boeing SpectroLab – 6 decades of experience, satellite solar panels Amonix – CPV module manufacturer III-V Semiconductor Cells
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Source: NREL
Fresnel Plastic Lens
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How does efficiency impact installed system prices BOS What mayprevent the III-V multi junction cells from getting cheaper, as silicon presented a roadblock for Mono-crystallaline?
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