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The phenoxazine-based acceptor–donor–acceptor structured small-molecule material M1 is used either as a hole-transport material in (CH3NH3)PbI3-perovskite-based solar cells or as photoactive donor material in bulk heterojunction organic solar cells. Excellent power conversion efficiencies of 13.2% and 6.9% are achieved in these two types of photovoltaic devices, respectively.
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Cheng et al. (2015) studied this question.
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