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Highly efficient all-inorganic perovskite solar cells with suppressed non-radiative recombination by a Lewis base

Author

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  • Jing Wang

    (City University of Hong Kong)

  • Jie Zhang

    (City University of Hong Kong)

  • Yingzhi Zhou

    (Institute of Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology)

  • Hongbin Liu

    (University of Washington)

  • Qifan Xue

    (Institute of Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology)

  • Xiaosong Li

    (University of Washington)

  • Chu-Chen Chueh

    (National Taiwan University)

  • Hin-Lap Yip

    (Institute of Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology)

  • Zonglong Zhu

    (City University of Hong Kong)

  • Alex K. Y. Jen

    (City University of Hong Kong
    University of Washington
    City University of Hong Kong)

Abstract

All-inorganic perovskite solar cells (PVSCs) have drawn increasing attention because of their outstanding thermal stability. However, their performance is still inferior than the typical organic-inorganic counterparts, especially for the devices with p-i-n configuration. Herein, we successfully employ a Lewis base small molecule to passivate the inorganic perovskite film, and its derived PVSCs achieved a champion efficiency of 16.1% and a certificated efficiency of 15.6% with improved photostability, representing the most efficient inverted all-inorganic PVSCs to date. Our studies reveal that the nitrile (C-N) groups on the small molecule effectively reduce the trap density of the perovskite film and thus significantly suppresses the non-radiative recombination in the derived PVSC by passivating the Pb-exposed surface, resulting in an improved open-circuit voltage from 1.10 V to 1.16 V after passivation. This work provides an insight in the design of functional interlayers for improving efficiencies and stability of all-inorganic PVSCs.

Suggested Citation

  • Jing Wang & Jie Zhang & Yingzhi Zhou & Hongbin Liu & Qifan Xue & Xiaosong Li & Chu-Chen Chueh & Hin-Lap Yip & Zonglong Zhu & Alex K. Y. Jen, 2020. "Highly efficient all-inorganic perovskite solar cells with suppressed non-radiative recombination by a Lewis base," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-019-13909-5
    DOI: 10.1038/s41467-019-13909-5
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    Cited by:

    1. 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.
    2. Nieto-Díaz, Balder A. & Crossland, Andrew F. & Groves, Christopher, 2021. "A levelized cost of energy approach to select and optimise emerging PV technologies: The relative impact of degradation, cost and initial efficiency," Applied Energy, Elsevier, vol. 299(C).
    3. Fangyuan Ye & Shuo Zhang & Jonathan Warby & Jiawei Wu & Emilio Gutierrez-Partida & Felix Lang & Sahil Shah & Elifnaz Saglamkaya & Bowen Sun & Fengshuo Zu & Safa Shoaee & Haifeng Wang & Burkhard Stille, 2022. "Overcoming C60-induced interfacial recombination in inverted perovskite solar cells by electron-transporting carborane," Nature Communications, Nature, vol. 13(1), pages 1-12, December.
    4. Ran Ji & Zongbao Zhang & Yvonne J. Hofstetter & Robin Buschbeck & Christian Hänisch & Fabian Paulus & Yana Vaynzof, 2022. "Perovskite phase heterojunction solar cells," Nature Energy, Nature, vol. 7(12), pages 1170-1179, December.
    5. Raman, Rohith Kumar & Gurusamy Thangavelu, Senthil A. & Venkataraj, Selvaraj & Krishnamoorthy, Ananthanarayanan, 2021. "Materials, methods and strategies for encapsulation of perovskite solar cells: From past to present," Renewable and Sustainable Energy Reviews, Elsevier, vol. 151(C).

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