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 Photovoltaics

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2anrip



Posts : 18
Join date : 2012-12-05
Age : 29
Location : indore

PostSubject: Photovoltaics   Tue Dec 25, 2012 7:24 pm

A solar cell, or photovoltaic cell (PV), is a device that converts light into electric current using the photoelectric effect. The first solar cell was constructed by Charles Fritts in the 1880s. In 1931 a German engineer, Dr Bruno Lange, developed a photo cell using silver selenide in place of copper oxide. Although the prototype selenium cells converted less than 1% of incident light into electricity, both Ernst Werner von Siemens and James Clerk Maxwell recognized the importance of this discovery. Following the work of Russell Ohl in the 1940s, researchers Gerald Pearson, Calvin Fuller and Daryl Chapin created the silicon solar cell in 1954. These early solar cells cost 286 USD/watt and reached efficiencies of 4.5–6%.
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aidenrock

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Join date : 2013-01-05
Age : 22
Location : delhi

PostSubject: interactive information   Tue Jan 22, 2013 11:03 pm

This is the interactive information on solar power i ever heard.
http://www.collegefootballwinning.com
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