Perovskits solar cells have gone from nothing to 23% efficiency in a decade, but they are fragile in air. Now researchers at the US Department of Energy’s National Renewable Energy Laboratory (NREL) have made a perovskite cell that, without protective encapsulation, retains 94% of its starting efficiency after 1,000 hours exposure to air – the ...
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from Electronics Weekly https://www.electronicsweekly.com/news/research-news/perovskite-solar-cells-lasts-air-2018-02/
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