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Chlorinated phenazine-based donor–acceptor conjugated copolymer PCTClP was designed and synthesized through Suzuki coupling polymerization. Compared to the unsubstituted copolymer PCTP, PCTClP exhibited a narrower band gap and a lower HOMO energy level. PCTClP/PC71BM based polymer solar cells show improved photovoltaic performance with power conversion efficiencies up to 4.06%.
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Li et al. (2013) studied this question.
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