| Recently, researchers at the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) announced that they have moved closer to creating a thin-film solar cell that can compete with the efficiency of the more common silicon-based solar cell. The Copper Indium Gallium Diselenide (CIGS) thin-film solar cell recently reached 19.9% efficiency in testing at the lab, setting a new world record |
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