PDF(Pubmed)
Abstract：
Based on the PM6:Y6 binary system, a novel non-fullerene acceptor material, D18-Cl, was doped into the PM6:Y6 blend to fabricate the active layer. The effects of different doping ratios of D18-Cl on organic solar cells were investigated. The best-performing organic solar cell was achieved when the doping ratio of D18-Cl reached 20 wt%. It exhibited a short-circuit current of 28.13 mA/cm2, a fill factor of 70.25%, an open-circuit voltage (Voc) of 0.81 V, and a power conversion efficiency of 16.08%. The introduction of an appropriate amount of D18-Cl expanded the absorption spectrum of the active layer, improved the morphology of the active layer, reduced large molecular aggregation and defects, minimized bimolecular recombination, and optimized the collection efficiency of charge carriers. These results indicate the critical importance of selecting an appropriate third component in binary systems and optimizing the doping ratio to enhance the performance of ternary organic solar cells.
摘要：
基于PM6:Y6二元系统，一种新型的非富勒烯受体材料，D18-Cl,掺杂到PM6:Y6共混物中以制造有源层。研究了不同掺杂比例的D18-Cl对有机太阳能电池的影响。当D18-Cl的掺杂率达到20wt％时，可以获得性能最佳的有机太阳能电池。它的短路电流为28.13mA/cm2，填充因子为70.25％，开路电压(Voc)为0.81V，功率转换效率为16.08%。引入适量的D18-Cl扩大了活性层的吸收光谱，改善了活性层的形貌，减少大分子聚集和缺陷，最小化双分子重组，优化了电荷载流子的收集效率。这些结果表明，在二元体系中选择合适的第三组分并优化掺杂比以提高三元有机太阳能电池的性能至关重要。
