IDEAS home Printed from https://ideas.repec.org/a/nat/natene/v8y2023i8d10.1038_s41560-023-01288-7.html
   My bibliography  Save this article

Reduction of bulk and surface defects in inverted methylammonium- and bromide-free formamidinium perovskite solar cells

Author

Listed:
  • Rui Chen

    (Huazhong University of Science and Technology)

  • Jianan Wang

    (Huazhong University of Science and Technology)

  • Zonghao Liu

    (Huazhong University of Science and Technology
    Optics Valley Laboratory)

  • Fumeng Ren

    (Huazhong University of Science and Technology)

  • Sanwan Liu

    (Huazhong University of Science and Technology)

  • Jing Zhou

    (Huazhong University of Science and Technology)

  • Haixin Wang

    (Huazhong University of Science and Technology)

  • Xin Meng

    (Huazhong University of Science and Technology)

  • Zheng Zhang

    (Huazhong University of Science and Technology)

  • Xinyu Guan

    (Huazhong University of Science and Technology)

  • Wenxi Liang

    (Huazhong University of Science and Technology)

  • Pavel A. Troshin

    (Federal Research Center for Problems of Chemical Physics and Medicinal Chemistry of Russian Academy of Sciences
    Zhengzhou Research Institute of HIT
    Harbin Institute of Technology)

  • Yabing Qi

    (Okinawa Institute of Science and Technology Graduate University (OIST))

  • Liyuan Han

    (Shanghai Jiao Tong University)

  • Wei Chen

    (Huazhong University of Science and Technology
    Optics Valley Laboratory)

Abstract

Power conversion efficiencies of inverted perovskite solar cells (PSCs) based on methylammonium- and bromide-free formamidinium lead triiodide (FAPbI3) perovskites still lag behind PSCs with a regular configuration. Here we improve the quality of both the bulk and surface of FA0.98Cs0.02PbI3 perovskite films to reduce the efficiency gap. First, we use dibutyl sulfoxide, a Lewis base additive, to improve the crystallinity and reduce the defect density and internal residual stress of the perovskite bulk. Then, we treat the surface of the perovskite film with trifluorocarbon-modified phenethylammonium iodide to optimize the energy levels, passivate defects and protect the film against moisture. The inverted PSCs simultaneously achieve 25.1% efficiency (24.5% from the reverse current–voltage scan measured by a third-party institution) and improved stability. The devices maintained 97.4% and 98.2% of their initial power conversion efficiencies after operating under continuous 1-sun air mass 1.5 G illumination for 1,800 h and under damp heat conditions (85 °C and 85% relative humidity) for 1,000 h, respectively.

Suggested Citation

  • Rui Chen & Jianan Wang & Zonghao Liu & Fumeng Ren & Sanwan Liu & Jing Zhou & Haixin Wang & Xin Meng & Zheng Zhang & Xinyu Guan & Wenxi Liang & Pavel A. Troshin & Yabing Qi & Liyuan Han & Wei Chen, 2023. "Reduction of bulk and surface defects in inverted methylammonium- and bromide-free formamidinium perovskite solar cells," Nature Energy, Nature, vol. 8(8), pages 839-849, August.
    • Handle: RePEc:nat:natene:v:8:y:2023:i:8:d:10.1038_s41560-023-01288-7
    DOI: 10.1038/s41560-023-01288-7
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41560-023-01288-7
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.
    File URL: https://libkey.io/10.1038/s41560-023-01288-7?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natene:v:8:y:2023:i:8:d:10.1038_s41560-023-01288-7. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.