Tandem organic solar cells reaches 15% efficiency

Researchers at the University of Michigan have found a way to stack solution-processed organic solar cells on top of vacuum-processed cells, creating an tandem solar cell with 15% efficiency. “For the last couple of years, efficiency for organic photo-voltaics was stuck around 11 to 12%,” said Michigan physicist Xiaozhou Che. The top solution-processed non-fullerene-acceptor cell ...
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