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14 Apr 08:40

Enhanced Photovoltaic Performance by Modulating Surface Composition in Bulk Heterojunction Polymer Solar Cells Based on PBDTTT-C-T/PC71BM

by Xia Guo, Maojie Zhang, Wei Ma, Long Ye, Shaoqing Zhang, Shengjian Liu, Harald Ade, Fei Huang, Jianhui Hou
Thumbnail image of graphical abstract

For the blend film of PBDTTT-C-T:PC71BM, the use of 1,8-diiodooctane as the solvent additive enriches the polymer at the top surface, so that a power conversion efficiency of 9.13% is recorded in the inverted polymer solar cell based on the blend, which is much higher than that of the device with conventional structure.