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12 ore fa · Thin-film solar cells, a second generation of photovoltaic (PV) solar cells: Top: thin-film silicon laminates being installed onto a roof. Middle: CIGS solar cell on a flexible plastic backing and rigid CdTe panels mounted on a supporting structure Bottom: thin-film laminates on rooftops Thin-film solar cells are made by depositing one or more thin layers (thin films or TFs) of photovoltaic ...
12 ore fa · The global African diaspora is the worldwide collection of communities descended from people from Africa, predominantly in the Americas. [39] The African populations in the Americas are descended from haplogroup L genetic groups of native Africans. [40] [41] The term most commonly refers to the descendants of the native West and Central ...
