Perovskite Solar Cells Keep On Surging

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Science  02 May 2014:
Vol. 344, Issue 6183, pp. 458
DOI: 10.1126/science.344.6183.458

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Researchers from three research groups reported last week that they beat the previous efficiency record for converting the energy in sunlight to electricity in solar cells called perovskites. Though perovskite solar cells are only 5 years old, their efficiency has skyrocketed from 3.8% to 19.3%. Ultimately, engineers may be able to layer perovskite solar cells atop conventional photovoltaics made from crystalline silicon, creating cells that are up to 32% efficient. That could make solar electricity as cheap as power produced from fossil fuels.