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New solar cell uses that other thing the sun emits: heat

A team of scientists has invented a new type of solar cell that converts both the sun's heat and light into electricity, potentially giving a boost to the efficiency of solar energy harvesting devices. The cell combines a photovoltaic process that turns light into electricity with another that converts heat; combined, they beat the current record for solar energy efficiency, as well as the theoretical efficiency limit of a cell of this design.

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