"CIGS?" queried an old-hand compound man. "Copper, gallium, indium, selenide." "Oh, that old white hope," was his reply. Significantly, he didn't use the word 'elephant' for, as the compound sector knows, CIGS has undergone a makeover to become among the hottest photovoltaic (PV) subjects. It's certainly a darling in the investment community. And it's not alone. Other compound materials such as that stalwart of the space fraternity - gallium; close silicon affiliate germanium, and cadmium selenide or telluride, not to mention titanium, are all mooted as next PV generation materials.
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