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Suppressed recombination loss in organic photovoltaics adopting a planar–mixed heterojunction architecture - Nature Energy
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At present, high-performance organic photovoltaics mostly adopt a bulk-heterojunction architecture, in which exciton dissociation is facilitated by charge-transfer states formed at numerous donor–acceptor (D-A) heterojunctions. However, the spin character of charge-transfer states originated from recombination of photocarriers allows relaxation to the lowest-energy triplet exciton (T1) at these heterojunctions, causing photocurrent loss. Here we
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