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Enhancing stability and efficiency of perovskite solar cells with crosslinkable silane-functionalized and doped fullerene

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  • Yang Bai

    (College of Engineering, University of Nebraska-Lincoln
    Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln)

  • Qingfeng Dong

    (College of Engineering, University of Nebraska-Lincoln
    Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln)

  • Yuchuan Shao

    (College of Engineering, University of Nebraska-Lincoln
    Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln)

  • Yehao Deng

    (College of Engineering, University of Nebraska-Lincoln
    Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln)

  • Qi Wang

    (College of Engineering, University of Nebraska-Lincoln
    Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln)

  • Liang Shen

    (College of Engineering, University of Nebraska-Lincoln
    Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln)

  • Dong Wang

    (College of Engineering, University of Nebraska-Lincoln
    Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln)

  • Wei Wei

    (College of Engineering, University of Nebraska-Lincoln
    Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln)

  • Jinsong Huang

    (College of Engineering, University of Nebraska-Lincoln
    Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln)

Abstract

The instability of hybrid perovskite materials due to water and moisture arises as one major challenge to be addressed before any practical application of the demonstrated high efficiency perovskite solar cells. Here we report a facile strategy that can simultaneously enhance the stability and efficiency of p–i–n planar heterojunction-structure perovskite devices. Crosslinkable silane molecules with hydrophobic functional groups are bonded onto fullerene to make the fullerene layer highly water-resistant. Methylammonium iodide is introduced in the fullerene layer for n-doping via anion-induced electron transfer, resulting in dramatically increased conductivity over 100-fold. With crosslinkable silane-functionalized and doped fullerene electron transport layer, the perovskite devices deliver an efficiency of 19.5% with a high fill factor of 80.6%. A crosslinked silane-modified fullerene layer also enhances the water and moisture stability of the non-sealed perovskite devices by retaining nearly 90% of their original efficiencies after 30 days’ exposure in an ambient environment.

Suggested Citation

  • Yang Bai & Qingfeng Dong & Yuchuan Shao & Yehao Deng & Qi Wang & Liang Shen & Dong Wang & Wei Wei & Jinsong Huang, 2016. "Enhancing stability and efficiency of perovskite solar cells with crosslinkable silane-functionalized and doped fullerene," Nature Communications, Nature, vol. 7(1), pages 1-9, November.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12806
    DOI: 10.1038/ncomms12806
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    Cited by:

    1. 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).

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