ID | 117562 |
Author |
Maeshima, Hiroshi
The University of Tokyo|Japan Aerospace Exploration Agency
Matsumoto, Kosei
The University of Tokyo|Japan Aerospace Exploration Agency
Hirahara, Yasuhiro
Nagoya University
Nakagawa, Takao
Japan Aerospace Exploration Agency
Koga, Ryoichi
Nagoya University
Hanamura, Yusuke
Nagoya University
Wada, Takehiko
Japan Aerospace Exploration Agency
Nagase, Koichi
Japan Aerospace Exploration Agency
Oyabu, Shinki
Tokushima University
Tokushima University Educator and Researcher Directory
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Suzuki, Toyoaki
Japan Aerospace Exploration Agency
Kokusho, Takuma
Nagoya University
Kaneda, Hidehiro
Nagoya University
Ishikawa, Daichi
Nagoya University
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Keywords | CdZnTe
infrared transmittance
cryogenic material
absorption coefficient
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Content Type |
Journal Article
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Description | To reveal the causes of infrared absorption in the wavelength region between electronic and lattice absorptions, we measured the temperature dependence of the absorption coefficient of p-type low-resistivity (∼102 Ωcm) CdZnTe crystals. We measured the absorption coefficients of CdZnTe crystals in four wavelength bands (λ=6.45, 10.6, 11.6, 15.1 μm) over the temperature range of T=8.6-300 K with an originally developed system. The CdZnTe absorption coefficient was measured to be α=0.3-0.5 cm−1 at T=300 K and α=0.4-0.9 cm−1 at T=8.6 K in the investigated wavelength range. With an absorption model based on transitions of free holes and holes trapped at an acceptor level, we conclude that the absorption due to free holes at T=150-300 K and that due to trapped-holes at T<50 K are dominant absorption causes in CdZnTe. We also discuss a method to predict the CdZnTe absorption coefficient at cryogenic temperature based on the room-temperature resistivity.
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Journal Title |
Journal of Electronic Materials
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ISSN | 03615235
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NCID | AA00697093
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Publisher | The Minerals, Metals & Materials Society|Springer Nature
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Volume | 51
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Issue | 2
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Start Page | 564
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End Page | 576
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Published Date | 2022-01-03
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Rights | This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
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language |
eng
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Publisher
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departments |
Liberal Arts and Sciences
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