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2D/3D heterojunction engineering at the buried interface towards high-performance inverted methylammonium-free perovskite solar cells

Author

Listed:
  • Haiyun Li

    (Chongqing University)

  • Cong Zhang

    (Chongqing University)

  • Cheng Gong

    (Chongqing University)

  • Daliang Zhang

    (Chongqing University)

  • Hong Zhang

    (Fudan University)

  • Qixin Zhuang

    (Chongqing University)

  • Xuemeng Yu

    (Southern University of Science and Technology)

  • Shaokuan Gong

    (Southern University of Science and Technology)

  • Xihan Chen

    (Southern University of Science and Technology)

  • Jiabao Yang

    (Northwestern Polytechnical University)

  • Xuanhua Li

    (Northwestern Polytechnical University)

  • Ru Li

    (Chongqing University)

  • Jingwei Li

    (Chongqing University)

  • Jinfei Zhou

    (Chongqing University)

  • Hua Yang

    (Chinese Academy of Sciences (CAS))

  • Qianqian Lin

    (Wuhan University)

  • Junhao Chu

    (Fudan University)

  • Michael Grätzel

    (École Polytechnique Fédérale de Lausanne)

  • Jiangzhao Chen

    (Chongqing University)

  • Zhigang Zang

    (Chongqing University)

Abstract

The main bottlenecks limiting the photovoltaic performance and stability of inverted perovskite solar cells (PSCs) are trap-assisted non-radiative recombination losses and photochemical degradation at the interface between perovskite and charge-transport layers. We propose a strategy to manipulate the crystallization of methylammonium-free perovskite by incorporating a small amount of 2-aminoindan hydrochloride into the precursor inks. This additive also modulates carrier recombination and extraction dynamics at the buried interface via the formation of a bottom-up two-dimensional/three-dimensional heterojunction. The resultant inverted PSC achieves a power conversion efficiency of 25.12% (certified 24.6%) at laboratory scale (0.09 cm2) and 22.48% at a larger area (1 cm2) with negligible hysteresis. More importantly, the resulting unencapsulated devices show superior operational stability, maintaining >98% of their initial efficiency of >24% after 1,500 hours of continuous maximum power point tracking under simulated AM1.5 illumination. Meanwhile, the encapsulated devices retain >92% of initial performance for 1,200 hours under the damp-heat test (85 °C and 85% relative humidity).

Suggested Citation

  • Haiyun Li & Cong Zhang & Cheng Gong & Daliang Zhang & Hong Zhang & Qixin Zhuang & Xuemeng Yu & Shaokuan Gong & Xihan Chen & Jiabao Yang & Xuanhua Li & Ru Li & Jingwei Li & Jinfei Zhou & Hua Yang & Qia, 2023. "2D/3D heterojunction engineering at the buried interface towards high-performance inverted methylammonium-free perovskite solar cells," Nature Energy, Nature, vol. 8(9), pages 946-955, September.
  • Handle: RePEc:nat:natene:v:8:y:2023:i:9:d:10.1038_s41560-023-01295-8
    DOI: 10.1038/s41560-023-01295-8
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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. Bo Li & Qi Liu & Jianqiu Gong & Shuai Li & Chunlei Zhang & Danpeng Gao & Zhongwei Chen & Zhen Li & Xin Wu & Dan Zhao & Zexin Yu & Xintong Li & Yan Wang & Haipeng Lu & Xiao Cheng Zeng & Zonglong Zhu, 2024. "Harnessing strong aromatic conjugation in low-dimensional perovskite heterojunctions for high-performance photovoltaic devices," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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