TY - JOUR
T1 - Highly efficient photoelectric effect in halide perovskites for regenerative electron sources
AU - Liu, Fangze
AU - Sidhik, Siraj
AU - Hoffbauer, Mark A.
AU - Lewis, Sina
AU - Neukirch, Amanda J.
AU - Pavlenko, Vitaly
AU - Tsai, Hsinhan
AU - Nie, Wanyi
AU - Even, Jacky
AU - Tretiak, Sergei
AU - Ajayan, Pulickel M.
AU - Kanatzidis, Mercouri G.
AU - Crochet, Jared J.
AU - Moody, Nathan A.
AU - Blancon, Jean Christophe
AU - Mohite, Aditya D.
N1 - Funding Information:
The work at Rice University was supported by ARO STIR project N-mensional interfaces, grant W911NF-19-1-0353. The work at Los Alamos National Laboratory (LANL) was supported by the LANL Laboratory Directed Research and Development Funds (LDRD) program. This work was done in part at the Center for Nonlinear Studies (CNLS) and the Center for Integrated Nanotechnologies (CINT), a U.S. Department of Energy and Office of Basic Energy Sciences user facility, at LANL. This research used resources provided by the LANL Institutional Computing Program. Los Alamos National Laboratory is operated by Triad National Security, LLC, for the National Nuclear Security Administration of the U.S. Department of Energy (Contract No. 89233218NCA000001).
Funding Information:
J.E. acknowledges the financial support from the Institut Universitaire de France. Work at Northwestern was supported by the U.S. Department of Energy, Office of Science (Grant No. SC0012541, structure characterization). We thank Anna Marie Alexander and Anju Poudel for their help with Auger electron spectroscopy.
Publisher Copyright:
© 2021, The Author(s).
PY - 2021/12
Y1 - 2021/12
N2 - 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.
AB - 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.
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U2 - 10.1038/s41467-021-20954-6
DO - 10.1038/s41467-021-20954-6
M3 - Article
C2 - 33514723
AN - SCOPUS:85100071097
VL - 12
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
IS - 1
M1 - 673
ER -