The energy band structure of the conduction band (energy–momentum relation of electrons) is crucial to understanding the electron transport of crystalline materials. In this paper, we describe an angle-resolved low-energy inverse photoelectron spectroscopy (AR-LEIPS) apparatus that examines the conduction band structures of materials sensitive to the electron beam, such as organic semiconductors and organic–inorganic hybrid perovskites. The principle of this apparatus is based on AR inverse photoelectron spectroscopy. To minimize radiation damage and improve energy resolution, we employed our previous approach used in LEIPS [H. Yoshida, Chem. Phys. Lett. 539–540, 180 (2012)]. We obtained an overall energy resolution of 0.23 eV with a momentum resolution of 0.9 nm−1 at the electron kinetic energy of 2 eV or higher.
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High-energy-resolution angle-resolved inverse-photoelectron spectroscopy apparatus for damage-free measurements of conduction band structures of functional materials
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June 2023
Research Article|
June 09 2023
High-energy-resolution angle-resolved inverse-photoelectron spectroscopy apparatus for damage-free measurements of conduction band structures of functional materials
Yuki Kashimoto;
Yuki Kashimoto
(Data curation, Formal analysis, Investigation, Software, Writing – original draft)
1
Graduate School of Science and Engineering, Chiba University
, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
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Satoshi Ideta;
Satoshi Ideta
(Investigation)
1
Graduate School of Science and Engineering, Chiba University
, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
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Haruki Sato
;
Haruki Sato
(Data curation, Investigation, Visualization)
1
Graduate School of Science and Engineering, Chiba University
, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
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Hibiki Orio
;
Hibiki Orio
(Data curation, Formal analysis)
1
Graduate School of Science and Engineering, Chiba University
, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
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Keita Kawamura;
Keita Kawamura
(Data curation)
1
Graduate School of Science and Engineering, Chiba University
, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
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Hiroyuki Yoshida
Hiroyuki Yoshida
a)
(Conceptualization, Formal analysis, Funding acquisition, Methodology, Supervision, Writing – original draft, Writing – review & editing)
1
Graduate School of Science and Engineering, Chiba University
, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
2
Graduate School of Engineering, Chiba University
, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
3
Molecular Chirality Research Center, Chiba University
, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
a)Author to whom correspondence should be addressed: hyoshida@chiba-u.jp
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a)Author to whom correspondence should be addressed: hyoshida@chiba-u.jp
Rev. Sci. Instrum. 94, 063903 (2023)
Article history
Received:
December 09 2022
Accepted:
May 18 2023
Citation
Yuki Kashimoto, Satoshi Ideta, Haruki Sato, Hibiki Orio, Keita Kawamura, Hiroyuki Yoshida; High-energy-resolution angle-resolved inverse-photoelectron spectroscopy apparatus for damage-free measurements of conduction band structures of functional materials. Rev. Sci. Instrum. 1 June 2023; 94 (6): 063903. https://doi.org/10.1063/5.0138204
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