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Perovskite–fullerene hybrid materials suppress hysteresis in planar diodes

Author

Listed:
  • Jixian Xu

    (University of Toronto)

  • Andrei Buin

    (University of Toronto)

  • Alexander H. Ip

    (University of Toronto)

  • Wei Li

    (University of Toronto)

  • Oleksandr Voznyy

    (University of Toronto)

  • Riccardo Comin

    (University of Toronto)

  • Mingjian Yuan

    (University of Toronto)

  • Seokmin Jeon

    (Center for Nanophase Materials Sciences, Oak Ridge National Laboratory)

  • Zhijun Ning

    (University of Toronto)

  • Jeffrey J. McDowell

    (University of Toronto)

  • Pongsakorn Kanjanaboos

    (University of Toronto)

  • Jon-Paul Sun

    (Dalhousie University)

  • Xinzheng Lan

    (University of Toronto)

  • Li Na Quan

    (Ewha Womans University)

  • Dong Ha Kim

    (Ewha Womans University)

  • Ian G. Hill

    (Dalhousie University)

  • Peter Maksymovych

    (Center for Nanophase Materials Sciences, Oak Ridge National Laboratory)

  • Edward H. Sargent

    (University of Toronto)

Abstract

Solution-processed planar perovskite devices are highly desirable in a wide variety of optoelectronic applications; however, they are prone to hysteresis and current instabilities. Here we report the first perovskite–PCBM hybrid solid with significantly reduced hysteresis and recombination loss achieved in a single step. This new material displays an efficient electrically coupled microstructure: PCBM is homogeneously distributed throughout the film at perovskite grain boundaries. The PCBM passivates the key PbI3− antisite defects during the perovskite self-assembly, as revealed by theory and experiment. Photoluminescence transient spectroscopy proves that the PCBM phase promotes electron extraction. We showcase this mixed material in planar solar cells that feature low hysteresis and enhanced photovoltage. Using conductive AFM studies, we reveal the memristive properties of perovskite films. We close by positing that PCBM, by tying up both halide-rich antisites and unincorporated halides, reduces electric field-induced anion migration that may give rise to hysteresis and unstable diode behaviour.

Suggested Citation

  • Jixian Xu & Andrei Buin & Alexander H. Ip & Wei Li & Oleksandr Voznyy & Riccardo Comin & Mingjian Yuan & Seokmin Jeon & Zhijun Ning & Jeffrey J. McDowell & Pongsakorn Kanjanaboos & Jon-Paul Sun & Xinz, 2015. "Perovskite–fullerene hybrid materials suppress hysteresis in planar diodes," Nature Communications, Nature, vol. 6(1), pages 1-8, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms8081
    DOI: 10.1038/ncomms8081
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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).
    2. 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.

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