Abstract

A novel copolymer donor (Qx) based quinoxaline with asymmetric side chains, namely PBDTTS-2FClQx, is synthesized. The PCE of optimized ternary OSC (PBDTTS-2FClQx:Y6:PC71BM = 1 : 0.9 : 0.1) is 13.59%, but binary PBDTTS-2FClQx:Y6 (12.41%).

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