Limited by the relatively low short-circuit current density (J_sc) and fill factor (FF), the efficiency of all-polymer solar cells (all-PSCs) is still inferior to the small molecular acceptor (SMA) counterpart-based devices. Herein, we fabricate efficient ternary all-PSCs by introducing a fluorinated small molecular acceptor-derived polymer acceptor named PYF-T-o to broaden the absorption of the all-polymer blend and improve the molecular crystallinity. PYF-T-o was found to have a good compatibility with the host PY-DT acceptor, thus contributing to form a homogeneous mixed phase in the active layer. Consequently, the ternary all-PSC exhibits simultaneously improved J_sc and FF than those of the binary all-PSC, resulting in an impressive efficiency of 18.15% (certified as 17.73%). Moreover, the large-area (1 cm²) and eco-friendly ternary all-PSCs (processed with o-xylene) were fabricated, and high efficiencies of 16.43% and 17.67% were obtained, respectively, showing the great potential of all-PSCs for future organic photovoltaic applications.

受限于相对较低的短路电流密度 ( J _sc ) 和填充因子 (FF)，全聚合物太阳能电池 (all-PSC) 的效率仍然不如基于小分子受体 (SMA) 的对应器件。在此，我们通过引入名为 PYF-T- o的氟化小分子受体衍生聚合物受体来制造高效的三元全 PSC，以扩大全聚合物共混物的吸收并提高分子结晶度。发现PYF-T- o与主体 PY-DT 受体具有良好的相容性，从而有助于在活性层中形成均匀的混合相。因此，三元全 PSC 同时表现出改进的J _sc和 FF 比二元全 PSC 的效率高，效率高达 18.15%（认证为 17.73%）。此外，还制备了大面积（1 cm ²）和环保型三元全太阳能电池（用邻二甲苯加工），分别获得了 16.43% 和 17.67% 的高效率，显示出全太阳能电池的巨大潜力。用于未来有机光伏应用的 PSC。