In this study, an effective and simple approach for optimizing the performance of both cathode and anode interlayers in OSCs is demonstrated using 4-heptyl-4′-cyanobiphenyl (7CB) to dope a classic cathode (ZnO and SnO₂) or an anode interlayer [poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)]. Because of the enhanced light absorption, improved physical contact between a photoactive layer and an interlayer, and increased carrier recombination, all of the devices based on a 7CB-doped interlayer show increased short-circuit current density (J_sc), fill factor (FF), and power conversion efficiency (PCE) compared to the corresponding undoped interlayer, regardless it is the anode interlayer or the cathode interlayer, which is a rare phenomenon in the interlayer modification field.

中文翻译：

---

通过在阴极和阳极夹层中添加液晶分子来增强有机太阳能电池的性能

在这项研究中，使用 4-庚基-4'-氰基联苯 (7CB) 掺杂经典阴极（ZnO 和 SnO ₂）或阳极夹层，展示了一种优化 OSC 中阴极和阳极夹层性能的有效且简单的方法[聚（3,4-亚乙基二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）]。由于增强的光吸收、改进的光敏层和夹层之间的物理接触以及增加的载流子复合，所有基于 7CB 掺杂夹层的器件都显示出增加的短路电流密度 ( J _sc)、填充因子(FF)和功率转换效率(PCE)与相应的未掺杂夹层相比，无论是阳极夹层还是阴极夹层，这在夹层改性领域都是罕见的现象。