Rather than splitting an exiton across a p-n junction, why not receive light like radio waves, with an antenna and a diode? That is the thinking behind a project at Georgia Tech, which has produced a class of devices called rectennas. The first optical rectenna was produced in 2015, now the Tech is reporting a ...
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from Electronics Weekly https://www.electronicsweekly.com/news/research-news/thz-solar-antennas-instead-solar-cells-2018-02/
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