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ID 117562
著者
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
Suzuki, Toyoaki Japan Aerospace Exploration Agency
Kokusho, Takuma Nagoya University
Kaneda, Hidehiro Nagoya University
Ishikawa, Daichi Nagoya University
キーワード
CdZnTe
infrared transmittance
cryogenic material
absorption coefficient
資料タイプ
学術雑誌論文
抄録
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.
掲載誌名
Journal of Electronic Materials
ISSN
03615235
cat書誌ID
AA00697093
出版者
The Minerals, Metals & Materials Society|Springer Nature
51
2
開始ページ
564
終了ページ
576
発行日
2022-01-03
権利情報
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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言語
eng
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部局
教養教育院