Abstract New non-conjugated small molecules (C4-OH and C6-OH) were synthesized and applied to the inverted organic solar cells (OSCs) as the cathode interlayer (CIL). The power conversion efficiencies (PCEs) of 9.35 and 9.21% were obtained in the device based on ZnO/C4-OH and ZnO/C6-OH, which are better than those of pristine ZnO (8.74%). The work function of ZnO/C4-OH and ZnO/C6-OH are also decreased from −4.5 to −4.27 eV and −4.37 eV, respectively. Consequently, OSCs with two small molecules exhibited enhanced photovoltaic properties due to the formation of interface dipole.

中文翻译：

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小分子电解质作为增强有机太阳能电池性能的中间层实验

摘要 合成了新的非共轭小分子（C4-OH 和 C6-OH），并将其作为阴极夹层（CIL）应用于倒置有机太阳能电池（OSCs）。在基于 ZnO/C4-OH 和 ZnO/C6-OH 的器件中获得了 9.35% 和 9.21% 的功率转换效率 (PCE)，优于原始 ZnO (8.74%)。ZnO/C4-OH 和 ZnO/C6-OH 的功函数也分别从 -4.5 降至 -4.27 eV 和 -4.37 eV。因此，由于界面偶极子的形成，具有两个小分子的 OSC 表现出增强的光伏特性。