Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology , Guangzhou 510640, P. R. China.
State Key Laboratory of Supramolecular Structure and Materials, Jilin University , Changchun 130012, P. R. China.
ACS Appl Mater Interfaces. 2017 May 24;9(20):17265-17270. doi: 10.1021/acsami.7b01427. Epub 2017 May 15.
A perylene bisimide (PBI-C4) with strong self-aggregation ability was used with polythieno[3,4-b]-thiophene/benzodithiophene (PTB7) to form an underlying morphology-inducing layer in organic solar cells. The PTB7:PCBM ([6,6]-phenyl C butyric acid methyl ester) spin-coated atop the preprocessed morphology-inducing thin layer showed an enhanced domain size with better phase separation compared with the conventional spin-coating of PTB7:PCBM on ZnO directly. Proper aggregation morphology of the active layer shows higher electrical properties resulting in a 14% improvement in the power conversion efficiency (PCE) (8.96% vs 7.85%). After replacing the ZnO cathode interlayer with a photoconductive interlayer (ZnO:PBI-H), a maximum PCE of 9.47% is obtained, which is among the best device performance based on PTB7:PCBM systems.
一种具有强自组装能力的苝二酰亚胺（PBI-C4）与聚噻吩[3,4-b]-噻吩/苯并二噻吩（PTB7）结合，在有机太阳能电池中形成底层形态诱导层。在预处理的形态诱导薄膜上旋涂的 PTB7：PCBM（[6,6]-苯基 C 丁酸甲酯）与直接在 ZnO 上旋涂的 PTB7：PCBM 相比，显示出增强的畴尺寸和更好的相分离。活性层的适当聚集形态表现出更高的电性能，从而使功率转换效率（PCE）提高了 14%（8.96%对 7.85%）。用光电导层（ZnO：PBI-H）取代 ZnO 阴极中间层后，获得了 9.47%的最高 PCE，这是基于 PTB7：PCBM 系统的最佳器件性能之一。
