"Solar upstart HelioVolt on Monday will announce that it has reached 12.2 percent efficiency with its CIGS solar cells, setting another mark in the race against competitors and silicon."http://www.news.com/8301-11128_3-9940422-54.html
"Solar upstart HelioVolt on Monday will announce that it has reached 12.2 percent efficiency with its CIGS solar cells, setting another mark in the race against competitors and silicon."
http://www.news.com/8301-11128_3-9940422-54.html
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