Abstract A promising solution to improve the performance of Bulk heterojunction organic photovoltaic devices is the insertion of functionalized self-assembled monolayers (SAMs) at the interface between the Electron Transporting Layer (ETL) and the active layer. By grafting such dipolar SAMs based on Y-PP-COOH (P = Phenyl, Y = CH3O, F)) on a ZnO ETL, both the electronic and the chemical properties of the interface are modified. The growth of the active blend the poly(3-hexylthiophene)- [ 6 , 6 ]-phenyl C61-butyric acid methylester blend deposited onto the SAMs is also altered. The dipole with a component oriented perpendicularly to the ZnO surface modifies the ZnO work function whereas the surface energy of the SAM influences the microstructuration of the active material. When we analyze the inverted photovoltaic cell, we find that the two effects may be distinguished: the CH3O moiety favorably affects the electrical transfer of carriers with mainly an improvement of the open-circuit voltage Voc whereas fluorine disfavors both electron extraction and blend microstructure quality, with a lower Voc and electrical current density Jsc.

中文翻译：

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接枝在 ZnO 上的偶极自组装单层用于调节聚（3-己基噻吩）-[ , ]-苯基 C61-丁酸甲酯混合物的电子特性

摘要 提高体异质结有机光伏器件性能的一个有前景的解决方案是在电子传输层 (ETL) 和活性层之间的界面插入功能化自组装单层 (SAM)。通过在 ZnO ETL 上接枝这种基于 Y-PP-COOH（P = 苯基，Y = CH3O，F）的偶极 SAM，界面的电子和化学性质都得到了改变。沉积在 SAM 上的聚（3-己基噻吩）-[6, 6]-苯基 C61-丁酸甲酯共混物的活性共混物的生长也发生了变化。具有垂直于 ZnO 表面定向的分量的偶极子改变了 ZnO 功函数，而 SAM 的表面能影响活性材料的微观结构。当我们分析倒置光伏电池时，