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Self-assembled materials with an ordered hydrophilic bilayer for high performance inverted Perovskite solar cells

Author

Listed:
  • Geping Qu

    (Southern University of Science and Technology
    City University of Hong Kong)

  • Letian Zhang

    (Southern University of Science and Technology)

  • Ying Qiao

    (Southern University of Science and Technology)

  • Shaokuan Gong

    (Southern University of Science and Technology)

  • Yuanjia Ding

    (Southern University of Science and Technology)

  • Yuli Tao

    (University of Science and Technology of China)

  • Siyuan Cai

    (Southern University of Science and Technology)

  • Xiao-Yong Chang

    (Southern University of Science and Technology)

  • Qian Chen

    (Southern University of Science and Technology)

  • Pengfei Xie

    (Southern University of Science and Technology)

  • Junyuan Feng

    (Southern University of Science and Technology)

  • Changqin Gao

    (Southern University of Science and Technology)

  • Guopeng Li

    (Southern University of Science and Technology)

  • Hui Xiao

    (Northwest Normal University)

  • Fei Wang

    (Shenzhen Polytechnic University)

  • Hanlin Hu

    (Shenzhen Polytechnic University)

  • Jie Yang

    (Henan University)

  • Shi Chen

    (Henan University)

  • Alex K.-Y. Jen

    (City University of Hong Kong)

  • Xihan Chen

    (Southern University of Science and Technology)

  • Zong-Xiang Xu

    (Southern University of Science and Technology
    Southern University of Science and Technology)

Abstract

While self-assembled material based inverted perovskite solar cells have surpassed power conversion efficiencies of 26%, enhancing their performance in large-area configurations remains a significant challenge. In this work, we report a self-assembled material based hole-selective layer 4-(7H-dibenzo[c,g]carbazol-7-yl)phenyl)phosphonic acid, with a π-expanded conjugation. The enhanced intermolecular π–π interactions facilitate the self-assembly of 4-(7H-dibenzo[c,g]carbazol-7-yl)phenyl)phosphonic acid molecules to form an ordered bilayer with a hydrophilic surface, which passivates the buried perovskite interface defect and enables high-quality and large-area perovskite preparation, while simultaneously enhancing interfacial charge extraction and transport. The certified efficiency of 4-(7H-dibenzo[c,g]carbazol-7-yl)phenyl)phosphonic acid based small-area (0.0715 cm2) device is 26.39% with high stability. Furthermore, a certified efficiency of 25.21% is achieved for a 99.12 mm2 large area device.

Suggested Citation

  • Geping Qu & Letian Zhang & Ying Qiao & Shaokuan Gong & Yuanjia Ding & Yuli Tao & Siyuan Cai & Xiao-Yong Chang & Qian Chen & Pengfei Xie & Junyuan Feng & Changqin Gao & Guopeng Li & Hui Xiao & Fei Wang, 2025. "Self-assembled materials with an ordered hydrophilic bilayer for high performance inverted Perovskite solar cells," Nature Communications, Nature, vol. 16(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-024-55523-0
    DOI: 10.1038/s41467-024-55523-0
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