Kesterite solar cells are low-cost alternatives for photovoltaics, based only on abundant metals, but they exhibit limited voltages. A new wide-gap kesterite solar cell provides a much higher voltage at a good efficiency.
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Siebentritt, S. High voltage, please!. Nat Energy 2, 840–841 (2017). https://doi.org/10.1038/s41560-017-0031-x
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DOI: https://doi.org/10.1038/s41560-017-0031-x