Lec_26 - EE143 F2010 Lecture 26 Solar Cells Fabrication...

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Professor N Cheung, U.C. Berkeley Lecture 26 EE143 F2010 Solar Cells Fabrication Technologies 1 •Crystalline Si Cell Technologies •Amorphous Si Cell Technologies •Thin Film Cell Technologies For a comprehensive tutorial on solar cells in general, see www.udel.edu/igert/pvcdrom
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Professor N Cheung, U.C. Berkeley Lecture 26 EE143 F2010 Global Energy Sources projection Source: World Energy Council
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Professor N Cheung, U.C. Berkeley Lecture 26 EE143 F2010 3 The Growth Rate Captures the Attention Source: AMAT
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Professor N Cheung, U.C. Berkeley Lecture 26 EE143 F2010 Solar Facts The earth receives more energy from the sun in just one hour than the world uses in a whole year. 1% of the land today used for crops and pasture could supply the world's total energy consumption. The Sun provides 1020 Watts/meter² peak power at sea- level Cell efficiency of 10% translates to ~100W/meter 2
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Professor N Cheung, U.C. Berkeley Lecture 26 EE143 F2010 Commonly Known Solar Cell Materials
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Professor N Cheung, U.C. Berkeley Lecture 26 EE143 F2010 Fraunhofer
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Professor N Cheung, U.C. Berkeley Lecture 26 EE143 F2010 7 Beside efficiency, there are other considerations for ultilization
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Professor N Cheung, U.C. Berkeley Lecture 26 EE143 F2010 Projected Module Cost
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Professor N Cheung, U.C. Berkeley Lecture 26 EE143 F2010 9 Energy Content EG silicon ~ 200 kWh/kg Solar Grade Si ~ 50kWh/kg MG silicon ~ 20kWh/kg Richard Corkish , Solar Progress , (1997) Energy Payback time Monocrystalline Si cell ~ 4 years Polycrystalline Si cell 1.6 to 2.7 years Amorphous Si cell 0.9 to 1.6 years.
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Professor N Cheung, U.C. Berkeley Lecture 26 EE143 F2010 10 Crystalline Silicon
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Lec_26 - EE143 F2010 Lecture 26 Solar Cells Fabrication...

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