Chem. J. Chinese Universities ›› 2023, Vol. 44 ›› Issue (7): 20230069.doi: 10.7503/cjcu20230069

• Article • Previous Articles     Next Articles

Cross-linking PEDOT∶F Hole-transporting Layer to Enhance Photovoltaic Performance of Flexible Organic Solar Cells

WEI Wanxia, ZHOU Xianmin, DONG Xinyun, LIU Tiefeng, XIE Cong, CHENG Jingyu, CHEN Jianping, LU Xin, FENG Kai, ZHOU Yinhua()   

  1. Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074,China
  • Received:2023-02-17 Online:2023-07-10 Published:2023-04-22
  • Contact: ZHOU Yinhua E-mail:yh_zhou@hust.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(52273180)

Abstract:

Silver nanowires(AgNWs) are important printable top electrodes in flexible organic solar cells(OSCs). However, when fabricating AgNWs from ethanol solution, it could cause damage on the hole-transporting layer below due to washing out. In this work, we propose a cross-linking strategy on the hole-transporting layer of poly(3,4-ethylenedioxythiophene)∶perfluorinated sulfonic acid ionomer(PEDOT∶F) to improve its alcohol resistance. By introducing a cross-linker of poly(ethylene glycol)diglycidyl ether(PEGDE), PEDOT:F was successfully cross-linked. Based on the cross-linked PEDOT∶F hole-transporting layer, small-area flexible OSCs(0.041 cm2) showed power conversion efficiency of 14.86%. Flexible organic solar module(21.18 cm2) was then fabricated and an efficiency of 12.38% was achieved.

Key words: Hole-transporting layer, PEDOT∶F, Cross-linking, Silver nanowires, Flexible organic solar cell

CLC Number: 

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