Ternary strategy has been confirmed as an efficient method to improve the power conversion efficiency (PCE) of organic photovoltaics (OPVs). The 15.7% PCE is achieved from PM6:Y6 based binary OPVs. One nonfullerene acceptor Br-ITIC and fullerene derivative PC₇₁BM are selected as the third component on the basis of efficient binary OPVs, respectively. The optimized ternary OPVs exhibit 16.4% and 16.2% PCE with Br-ITIC and PC₇₁BM as the third component, respectively, corresponding to the short circuit current density (J_SC) of 25.5 mA cm^-2 vs. 25.6 mA cm^-2, open circuit voltage (V_OC) of 0.854 V vs. 0.836 V and fill factor (FF) of 75.1% vs. 75.6%. The advantage on photovoltaic parameters of two ternary OPVs may be recombined into one cell by employing PC₇₁BM as the fourth component. A 16.8% PCE is achieved from the optimized quaternary OPVs, resulting from the further increased J_SC of 25.8 mA cm^-2 and FF of 76.4% compared with the optimized ternary OPVs. The third party certificated PCE of quaternary OPVs is 16.2%. In comparison to 15.7% PCE of the binary OPVs, about 4.5% and 7.0% PCE improvement are step-by-step achieved from the optimized ternary and quaternary OPVs, respectively. Multi-components strategy may provide enough room to achieve highly efficient OPVs.

三元策略已被确认为提高有机光伏（OPV）的功率转换效率（PCE）的有效方法。从基于PM6：Y6的二进制OPV中获得15.7％的PCE。基于有效的二元OPV，分别选择一种非富勒烯受体Br-ITIC和富勒烯衍生物PC ₇₁ BM作为第三组分。优化的三元OPV分别具有16.4％和16.2％的PCE，其中Br-ITIC和PC ₇₁ BM作为第三成分，分别对应于25.5 mA cm ^-2与25.6 mA cm ^-2的短路电流密度（J _SC），开路电压（V _OC）0.854 V与0.836 V的相对电压）和填充系数（FF）分别为75.1％与75.6％通过使用PC ₇₁ BM作为第四组件，可以将两个三元OPV的光伏参数优势重新组合为一个电池。与优化的三元OPV相比，优化的四元OPV获得了16.8％的PCE，这是由于J _SC进一步提高了25.8 mA cm ^-2，FF达到了76.4％。第三方OPV的第三方认证PCE为16.2％。与二进制OPV的15.7％PCE相比，优化的三元和四元OPV分别逐步实现了约4.5％和7.0％的PCE改善。多组件策略可以提供足够的空间来实现高效的OPV。