A poly(thieno[3,4-b]-thiophene/benzodithiophene) (PTB7)-based polymer solar cell (PSC) with conventional structure can achieve a significant power conversion efficiency of 8.42%, which is realized by integrated optimization of both anode and cathode interlayers. The effects of a conjugated microporous polymer film as the anode interlayer are threefold: it enhances the contact with active layer, increases the work function and conductivity, and blocks electrons.
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Gu et al. (2014) studied this question.
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