Decreased Domain Size and Improved Crystallinity by Adjusting Solvent-Polymer Interaction Parameters

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  All-polymer solar cells(all-PSCs),which are composed of binary blends of conjugated polymer donor and acceptor,offer several advantages over conventional polymer donor/fullerene based PSCs.Despite significant efforts to optimize all-PSCs,less success has been achieved for all-PSCs than for polymer/fullerene PSC systems.
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