Scientists at UCLA have spray-coated a perovskite solar cell onto thin-film CIGS solar cell to convert energy at 22.4% when the cells are connected in series. Series connection is a tougher test that four-terminal connection, because both top and bottom cells care forced to work at the same current, making it unlikely that both are working ...

This story continues at Perovskite-on-CIGS tandem solar cell hits new high

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