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The alloy acceptor (indene-C60 bis-adduct (ICBA)/6,6-phenyl-C71 -butyric acid-methyl-ester (PC71 BM)) is employed to replace the widely used fullerene acceptor (PC71 BM) in organic solar cells based on five different polymer donors, which exhibit a higher efficiency and much better device stability than the PC71 BM counterpart.
Cheng et al. (2016) studied this question.