Swedish and Chinese scientists are aiming indoor photovoltaics with organic materials for flexible solar cells. A 1cm2 cell made from them converted 1000 lux light at 26.1% efficiency, and delivered above 1V for more than 1,000 hours under ambients between 200 and 1,000 lux. A 4cm2 version, created by blade coating, maintained 23% efficiency. Chemically, the researchers ...

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