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High efficiency planar-type perovskite solar cells with negligible hysteresis using EDTA-complexed SnO2

Author

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  • Dong Yang

    (Shaanxi Normal University
    Center for Energy Harvesting Materials and System (CEHMS), Virginia Tech)

  • Ruixia Yang

    (Shaanxi Normal University)

  • Kai Wang

    (Center for Energy Harvesting Materials and System (CEHMS), Virginia Tech)

  • Congcong Wu

    (Center for Energy Harvesting Materials and System (CEHMS), Virginia Tech)

  • Xuejie Zhu

    (Shaanxi Normal University)

  • Jiangshan Feng

    (Shaanxi Normal University)

  • Xiaodong Ren

    (Shaanxi Normal University)

  • Guojia Fang

    (Wuhan University)

  • Shashank Priya

    (Center for Energy Harvesting Materials and System (CEHMS), Virginia Tech)

  • Shengzhong (Frank) Liu

    (Shaanxi Normal University
    Chinese Academy of Sciences)

Abstract

Even though the mesoporous-type perovskite solar cell (PSC) is known for high efficiency, its planar-type counterpart exhibits lower efficiency and hysteretic response. Herein, we report success in suppressing hysteresis and record efficiency for planar-type devices using EDTA-complexed tin oxide (SnO2) electron-transport layer. The Fermi level of EDTA-complexed SnO2 is better matched with the conduction band of perovskite, leading to high open-circuit voltage. Its electron mobility is about three times larger than that of the SnO2. The record power conversion efficiency of planar-type PSCs with EDTA-complexed SnO2 increases to 21.60% (certified at 21.52% by Newport) with negligible hysteresis. Meanwhile, the low-temperature processed EDTA-complexed SnO2 enables 18.28% efficiency for a flexible device. Moreover, the unsealed PSCs with EDTA-complexed SnO2 degrade only by 8% exposed in an ambient atmosphere after 2880 h, and only by 14% after 120 h under irradiation at 100 mW cm−2.

Suggested Citation

  • Dong Yang & Ruixia Yang & Kai Wang & Congcong Wu & Xuejie Zhu & Jiangshan Feng & Xiaodong Ren & Guojia Fang & Shashank Priya & Shengzhong (Frank) Liu, 2018. "High efficiency planar-type perovskite solar cells with negligible hysteresis using EDTA-complexed SnO2," Nature Communications, Nature, vol. 9(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-05760-x
    DOI: 10.1038/s41467-018-05760-x
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    Cited by:

    1. Xinchen Dai & Pramod Koshy & Charles Christopher Sorrell & Jongchul Lim & Jae Sung Yun, 2020. "Focussed Review of Utilization of Graphene-Based Materials in Electron Transport Layer in Halide Perovskite Solar Cells: Materials-Based Issues," Energies, MDPI, vol. 13(23), pages 1-24, December.
    2. Sajid, Sajid & Huang, Hao & Ji, Jun & Jiang, Haoran & Duan, Mingjun & Liu, Xin & Liu, Benyu & Li, Meicheng, 2021. "Quest for robust electron transporting materials towards efficient, hysteresis-free and stable perovskite solar cells," Renewable and Sustainable Energy Reviews, Elsevier, vol. 152(C).
    3. Martin, Blake & Amos, Delaina & Brehob, Ellen & van Hest, Maikel F.A.M. & Druffel, Thad, 2022. "Techno-economic analysis of roll-to-roll production of perovskite modules using radiation thermal processes," Applied Energy, Elsevier, vol. 307(C).

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