Researchers at Purdue University in Indiana have found that using modified silicon wafers as a layer for solar absorption devices help capture sunlight more efficiently while lowering production costs and reducing re-emission created by heated objects. The modified silicon device has a silver reflective layer on its back, and an upper layer containing an anti-reflection coating made of silicon nitride. "Ideally, the hybrid solar-power system could achieve efficiencies of more than 50 percent, compared to 31 percent for photovoltaic cells alone," says an article on


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