Source: Green Energy News
April 17, 2007 – Vol.12 No.4
http://www.green-energy-news.com/arch/nrgs2007/20070051.html
Honda is developing them, so is Shell in its venture it calls Avancis. Less familiar names are also working on what could be the next generation of solar cells and thus solar products: DayStar Technologies, HelioVolt, Nanosolar, W¸rth Solar and Odersun. Those next-gen cells, CIS (Copper Indium Selenide), and their close cousins CIGS (Copper Indium Gallium Diselenide), offer solar-to-electric conversion efficiencies about the same as silicon solar (efficiencies in the mid to high teens) but conceivably could be offered at a much lower cost.
The reason? CIS and CIGS are very thin, thin-film solar technologies, a 100th or thinner than traditional silicon. Very thin equates to very little material is needed to make them: The less material, the less cost. Yet the commercialization of CIS and CIGS technologies has been slowed by adequate high speed production methods. CIS and CIGS cells are difficult to make. Difficult to produce means high costs despite the lower cost of materials.
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