Ternary organic photovoltaics (OPVs) combining two polymer donors (PM6, J71) and one non-fullerene acceptor Y6 were prepared in conventional configuration. The complementary absorption spectra of PM6 and J71 can maximize photon harvesting in ternary films that is beneficial to the enhancement of short circuit current density (J_SC). The open circuit voltage (V_OC) of ternary OPVs show a monotonously increased trend along with the increase of J71 content, which is attributed to reduced energy loss considering the similar HOMO energy levels of two donors. Furthermore, the optimized molecular arrangement and phase separation in ternary films result a high fill factor (FF) of 76.0%. As a result, by incorporating 10 wt% J71 in ternary films, the power conversion efficiency of ternary OPVs achieves 16.5% that is the highest values for ternary OPVs with two donors. The results indicate that ternary OPVs with two donors could achieve high performance by well-optimized photon harvesting and phase separation.

以常规配置制备了结合了两个聚合物供体（PM6，J71）和一个非富勒烯受体Y6的三元有机光伏（OPV）。PM6和J71的互补吸收光谱可以使三元膜中的光子捕获最大化，这有利于增强短路电流密度（J _SC）。开路电压（V _OC）三元OPV随J71含量的增加而呈现单调增加的趋势，这归因于考虑到两个供体的HOMO能量水平相似，能量损失减少。此外，三元膜中优化的分子排列和相分离导致76.0％的高填充因子（FF）。结果，通过在三元膜中掺入10重量％的J71，三元OPV的功率转换效率达到16.5％，这是具有两个施主的三元OPV的最高值。结果表明，具有两个供体的三元正痘病毒可以通过充分优化的光子收集和相分离来实现高性能。