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Optimized active layer morphology toward efficient and polymer batch insensitive organic solar cells

Author

Listed:
  • Kangkang Weng

    (Beihang University)

  • Linglong Ye

    (Beihang University
    Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University)

  • Lei Zhu

    (Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University)

  • Jinqiu Xu

    (Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University)

  • Jiajia Zhou

    (Beihang University)

  • Xiang Feng

    (Frontier Institute of Science and Technology, Xi’an Jiaotong University)

  • Guanghao Lu

    (Frontier Institute of Science and Technology, Xi’an Jiaotong University)

  • Songting Tan

    (Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University)

  • Feng Liu

    (Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University)

  • Yanming Sun

    (Beihang University)

Abstract

Morphology control in laboratory and industry setting remains as a major challenge for organic solar cells (OSCs) due to the difference in film-drying kinetics between spin coating and the printing process. A two-step sequential deposition method is developed to control the active layer morphology. A conjugated polymer that self-assembles into a well-defined fibril structure is used as the first layer, and then a non-fullerene acceptor is introduced into the fibril mesh as the second layer to form an optimal morphology. A benefit of the combined fibril network morphology and non-fullerene acceptor properties was that a high efficiency of 16.5% (certified as 16.1%) was achieved. The preformed fibril network layer and the sequentially deposited non-fullerene acceptor form a robust morphology that is insensitive to the polymer batches, solving a notorious issue in OSCs. Such progress demonstrates that the utilization of polymer fibril networks in a sequential deposition process is a promising approach towards the fabrication of high-efficiency OSCs.

Suggested Citation

  • Kangkang Weng & Linglong Ye & Lei Zhu & Jinqiu Xu & Jiajia Zhou & Xiang Feng & Guanghao Lu & Songting Tan & Feng Liu & Yanming Sun, 2020. "Optimized active layer morphology toward efficient and polymer batch insensitive organic solar cells," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-16621-x
    DOI: 10.1038/s41467-020-16621-x
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    Cited by:

    1. Zirui Gan & Liang Wang & Jinlong Cai & Chuanhang Guo & Chen Chen & Donghui Li & Yiwei Fu & Bojun Zhou & Yuandong Sun & Chenhao Liu & Jing Zhou & Dan Liu & Wei Li & Tao Wang, 2023. "Electrostatic force promoted intermolecular stacking of polymer donors toward 19.4% efficiency binary organic solar cells," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    2. Yunhao Cai & Qian Li & Guanyu Lu & Hwa Sook Ryu & Yun Li & Hui Jin & Zhihao Chen & Zheng Tang & Guanghao Lu & Xiaotao Hao & Han Young Woo & Chunfeng Zhang & Yanming Sun, 2022. "Vertically optimized phase separation with improved exciton diffusion enables efficient organic solar cells with thick active layers," Nature Communications, Nature, vol. 13(1), pages 1-11, December.

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