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Multifunctional molecular modulators for perovskite solar cells with over 20% efficiency and high operational stability

Author

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  • Dongqin Bi

    (Ecole polytechnique fédérale de Lausanne)

  • Xiong Li

    (Ecole polytechnique fédérale de Lausanne
    Huazhong University of Science and Technology)

  • Jovana V. Milić

    (Ecole polytechnique fédérale de Lausanne)

  • Dominik J. Kubicki

    (Ecole polytechnique fédérale de Lausanne
    Ecole polytechnique fédérale de Lausanne)

  • Norman Pellet

    (Ecole polytechnique fédérale de Lausanne)

  • Jingshan Luo

    (Ecole polytechnique fédérale de Lausanne
    College of Electronic Information and Optical Engineering, Nankai University)

  • Thomas LaGrange

    (Interdisciplinary Centre for Electron Microscopy)

  • Pierre Mettraux

    (Molecular and Hybrid Materials Characterization Center)

  • Lyndon Emsley

    (Ecole polytechnique fédérale de Lausanne)

  • Shaik M. Zakeeruddin

    (Ecole polytechnique fédérale de Lausanne)

  • Michael Grätzel

    (Ecole polytechnique fédérale de Lausanne)

Abstract

Perovskite solar cells present one of the most prominent photovoltaic technologies, yet their stability, scalability, and engineering at the molecular level remain challenging. We demonstrate a concept of multifunctional molecular modulation of scalable and operationally stable perovskite solar cells that exhibit exceptional solar-to-electric power conversion efficiencies. The judiciously designed bifunctional molecular modulator SN links the mercapto-tetrazolium (S) and phenylammonium (N) moieties, which passivate the surface defects, while displaying a structure-directing function through interaction with the perovskite that induces the formation of large grain crystals of high electronic quality of the most thermally stable formamidinium cesium mixed lead iodide perovskite formulation. As a result, we achieve greatly enhanced solar cell performance with efficiencies exceeding 20% for active device areas above 1 cm2 without the use of antisolvents, accompanied by outstanding operational stability under ambient conditions.

Suggested Citation

  • Dongqin Bi & Xiong Li & Jovana V. Milić & Dominik J. Kubicki & Norman Pellet & Jingshan Luo & Thomas LaGrange & Pierre Mettraux & Lyndon Emsley & Shaik M. Zakeeruddin & Michael Grätzel, 2018. "Multifunctional molecular modulators for perovskite solar cells with over 20% efficiency and high operational stability," Nature Communications, Nature, vol. 9(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06709-w
    DOI: 10.1038/s41467-018-06709-w
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    Cited by:

    1. Dhruba B. Khadka & Yasuhiro Shirai & Masatoshi Yanagida & Hitoshi Ota & Andrey Lyalin & Tetsuya Taketsugu & Kenjiro Miyano, 2024. "Defect passivation in methylammonium/bromine free inverted perovskite solar cells using charge-modulated molecular bonding," Nature Communications, Nature, vol. 15(1), pages 1-16, December.
    2. Zhipeng Li & Xiao Wang & Zaiwei Wang & Zhipeng Shao & Lianzheng Hao & Yi Rao & Chen Chen & Dachang Liu & Qiangqiang Zhao & Xiuhong Sun & Caiyun Gao & Bingqian Zhang & Xianzhao Wang & Li Wang & Guangle, 2022. "Ammonia for post-healing of formamidinium-based Perovskite films," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    3. Shuai You & Felix T. Eickemeyer & Jing Gao & Jun-Ho Yum & Xin Zheng & Dan Ren & Meng Xia & Rui Guo & Yaoguang Rong & Shaik M. Zakeeruddin & Kevin Sivula & Jiang Tang & Zhongjin Shen & Xiong Li & Micha, 2023. "Bifunctional hole-shuttle molecule for improved interfacial energy level alignment and defect passivation in perovskite solar cells," Nature Energy, Nature, vol. 8(5), pages 515-525, May.

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