Global Solar cells
Thin-film cells are fast becoming competitive in solar photovoltaics. Because they use much less material than polycrystalline silicon, they can lower the cost significantly of solar electricity even though the cell efficiency is lower. Here is a string of cells from Global Solar Energy which are made from CIGS, a combination of copper, indium, gallium, and selenide.
October 15, 2008 11:59 AM PDT
Photo by: Martin LaMonica/CNET News
| Caption by: Martin LaMonica
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