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Harmonizing the bilateral bond strength of the interfacial molecule in perovskite solar cells

Author

Listed:
  • Qiuyang Li

    (Peking University)

  • Hong Liu

    (Chinese Academy of Sciences
    Chinese Academy of Sciences)

  • Cheng-Hung Hou

    (Academia Sinica)

  • Haoming Yan

    (Peking University)

  • Shunde Li

    (Peking University)

  • Peng Chen

    (Peking University)

  • Hongyu Xu

    (Peking University)

  • Wen-Yi Yu

    (Academia Sinica)

  • Yiping Zhao

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Yanping Sui

    (Chinese Academy of Sciences)

  • Qixuan Zhong

    (Peking University)

  • Yongqiang Ji

    (Peking University)

  • Jing-Jong Shyue

    (Academia Sinica)

  • Shuang Jia

    (Peking University)

  • Bo Yang

    (ShanghaiTech University)

  • Pengyi Tang

    (Chinese Academy of Sciences
    Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Qihuang Gong

    (Peking University
    Peking University Yangtze Delta Institute of Optoelectronics
    Shanxi University)

  • Lichen Zhao

    (Peking University)

  • Rui Zhu

    (Peking University
    Peking University Yangtze Delta Institute of Optoelectronics
    Shanxi University)

Abstract

Interfacial molecules have been demonstrated to improve the photovoltaic performance of perovskite solar cells (PSCs). However, the effect is influenced by the targeted substrate and, in particular, by its bond with the interfacial molecule. A weaker bonding of the interfacial molecule with the substrate usually implies a stronger bonding with the perovskite that could lead to uncontrollable insertion of the interfacial molecule into the perovskite bulk, resulting in device degradation. Here we select bis(2-aminoethyl) ether (BAE) as the interfacial molecule between the perovskite and the electron transport layer (ETL) in n–i–p PSCs and develop a strategy to harmonize the strength of the bilateral bonds of BAE. In particular, we manipulate the electronic structure of the ETL with doping to increase the strength of the BAE–ETL bond. This thereby results in a weakening of the BAE–perovskite bond. The harmonization in bilateral bonds of the interfacial molecule leads to PSCs with an efficiency surpassing 26.5% (certified as 26.31%) and improved stability.

Suggested Citation

  • Qiuyang Li & Hong Liu & Cheng-Hung Hou & Haoming Yan & Shunde Li & Peng Chen & Hongyu Xu & Wen-Yi Yu & Yiping Zhao & Yanping Sui & Qixuan Zhong & Yongqiang Ji & Jing-Jong Shyue & Shuang Jia & Bo Yang , 2024. "Harmonizing the bilateral bond strength of the interfacial molecule in perovskite solar cells," Nature Energy, Nature, vol. 9(12), pages 1506-1516, December.
    • Handle: RePEc:nat:natene:v:9:y:2024:i:12:d:10.1038_s41560-024-01642-3
    DOI: 10.1038/s41560-024-01642-3
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    Cited by:

    1. Yang Bai & Yuanyuan Meng & Ming Yang & Ruijia Tian & Jingnan Wang & Boxin Jiao & Haibin Pan & Jiangwei Gao & Yaohua Wang & Kexuan Sun & Shujing Zhou & Xiaoyi Lu & Zhenhua Song & Chang Liu & Ziyi Ge, 2025. "Lattice stabilization and strain homogenization in Sn-Pb bottom subcells enable stable all-perovskite tandems solar cells," Nature Communications, Nature, vol. 16(1), pages 1-15, December.
    2. Jike Ding & Yunxiao Liao & Hao Liu & Yong Ding & Quanxing Ma & Mengjia Li & Zuoling Zhang & Jiajia Zhang & Jian-Xin Tang & Jiang Sheng & Jiangzhao Chen & Cong Chen, 2025. "Stabilizing buried interface by bilateral bond strength equilibrium strategy toward efficient perovskite photovoltaics," Nature Communications, Nature, vol. 16(1), pages 1-11, December.

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