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Highly efficient photoelectric effect in halide perovskites for regenerative electron sources

Author

Listed:
  • Fangze Liu

    (Los Alamos National Laboratory)

  • Siraj Sidhik

    (Department of Chemical and Biomolecular Engineering Rice University
    Department of Material Science and Nanoengineering Rice University)

  • Mark A. Hoffbauer

    (Los Alamos National Laboratory)

  • Sina Lewis

    (Los Alamos National Laboratory)

  • Amanda J. Neukirch

    (Los Alamos National Laboratory)

  • Vitaly Pavlenko

    (Los Alamos National Laboratory)

  • Hsinhan Tsai

    (Los Alamos National Laboratory)

  • Wanyi Nie

    (Los Alamos National Laboratory)

  • Jacky Even

    (Univ Rennes, INSA Rennes, CNRS, Institut FOTON - UMR 6082)

  • Sergei Tretiak

    (Los Alamos National Laboratory)

  • Pulickel M. Ajayan

    (Department of Material Science and Nanoengineering Rice University)

  • Mercouri G. Kanatzidis

    (Northwestern University
    Northwestern University
    Northwestern University)

  • Jared J. Crochet

    (Los Alamos National Laboratory)

  • Nathan A. Moody

    (Los Alamos National Laboratory)

  • Jean-Christophe Blancon

    (Department of Chemical and Biomolecular Engineering Rice University)

  • Aditya D. Mohite

    (Department of Chemical and Biomolecular Engineering Rice University
    Department of Material Science and Nanoengineering Rice University)

Abstract

Electron sources are a critical component in a wide range of applications such as electron-beam accelerator facilities, photomultipliers, and image intensifiers for night vision. We report efficient, regenerative and low-cost electron sources based on solution-processed halide perovskites thin films when they are excited with light with energy equal to or above their bandgap. We measure a quantum efficiency up to 2.2% and a lifetime of more than 25 h. Importantly, even after degradation, the electron emission can be completely regenerated to its maximum efficiency by deposition of a monolayer of Cs. The electron emission from halide perovskites can be tuned over the visible and ultraviolet spectrum, and operates at vacuum levels with pressures at least two-orders higher than in state-of-the-art semiconductor electron sources.

Suggested Citation

  • Fangze Liu & Siraj Sidhik & Mark A. Hoffbauer & Sina Lewis & Amanda J. Neukirch & Vitaly Pavlenko & Hsinhan Tsai & Wanyi Nie & Jacky Even & Sergei Tretiak & Pulickel M. Ajayan & Mercouri G. Kanatzidis, 2021. "Highly efficient photoelectric effect in halide perovskites for regenerative electron sources," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-20954-6
    DOI: 10.1038/s41467-021-20954-6
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