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In this work, three dithieno[3,2- b :2′,3′- d ]pyrrol fused-ring electron acceptors ( IPT-2F , IPTT-2F , and IPTTT-2F ) have been successfully developed as efficient asymmetric nonfullerene acceptors (NFAs) for organic solar cells (OSCs).
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Yang et al. (2019) studied this question.
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