ZnO crystal as a potential damage-recoverable window material for fusion reactors

Kohei Yamanoi; Melvin John F. Empizo; Kazuyuki Mori; Keisuke Iwano; Yuki Minami; Ren Arita; Yuki Iwasa; Kazuhito Fukuda; Kosaku Kato; Keisuke Takano; Toshihiko Shimizu; Makoto Nakajima; Masashi Yoshimura; Nobuhiko Sarukura; Takayoshi Norimatsu; Masanori Hangyo; Hiroshi Azechi; Tsuguo Fukuda; Bess G. Singidas; Roland V. Sarmago; Makoto Oya; Yoshio Ueda

doi:10.1016/j.optmat.2016.10.058

ZnO crystal as a potential damage-recoverable window material for fusion reactors

Kohei Yamanoi, Melvin John F. Empizo, Kazuyuki Mori, Keisuke Iwano, Yuki Minami, Ren Arita, Yuki Iwasa, Kazuhito Fukuda, Kosaku Kato, Keisuke Takano, Toshihiko Shimizu, Makoto Nakajima, Masashi Yoshimura, Nobuhiko Sarukura, Takayoshi Norimatsu, Masanori Hangyo, Hiroshi Azechi, Tsuguo Fukuda, Bess G. Singidas, Roland V. SarmagoMakoto Oya, Yoshio Ueda

Research output: Contribution to journal › Article

1 Citation (Scopus)

Abstract

Hydrothermal-grown bulk zinc oxide (ZnO) single crystals are investigated before and after 1-keV hydrogen-ion and deuterium-ion plasma irradiation. A decrease in optical transmittance, red-shifting of ultraviolet (UV) emission peaks, and shortening of UV emission lifetimes are observed from the bulk crystals immediately after irradiation. The results are attributed to the radiation-induced defects formed by hydrogen implantation. Although these defects immediately affect the optical properties of the single crystals, the optical transmittances and photoluminescence emissions recover days after irradiation. Our observations show the potential properties of a bulk ZnO single crystal as a damage-recoverable window material in high-flux-radiation environments such as those of fusion reactors.

Original language	English
Pages (from-to)	646-650
Number of pages	5
Journal	Optical Materials
Volume	62
DOIs	https://doi.org/10.1016/j.optmat.2016.10.058
Publication status	Published - Dec 1 2016
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Computer Science(all)
Atomic and Molecular Physics, and Optics
Spectroscopy
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Electrical and Electronic Engineering

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10.1016/j.optmat.2016.10.058

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Yamanoi, K., Empizo, M. J. F., Mori, K., Iwano, K., Minami, Y., Arita, R., Iwasa, Y., Fukuda, K., Kato, K., Takano, K., Shimizu, T., Nakajima, M., Yoshimura, M., Sarukura, N., Norimatsu, T., Hangyo, M., Azechi, H., Fukuda, T., Singidas, B. G., ... Ueda, Y. (2016). ZnO crystal as a potential damage-recoverable window material for fusion reactors. Optical Materials, 62, 646-650. https://doi.org/10.1016/j.optmat.2016.10.058

ZnO crystal as a potential damage-recoverable window material for fusion reactors. / Yamanoi, Kohei; Empizo, Melvin John F.; Mori, Kazuyuki; Iwano, Keisuke; Minami, Yuki; Arita, Ren; Iwasa, Yuki; Fukuda, Kazuhito; Kato, Kosaku; Takano, Keisuke; Shimizu, Toshihiko; Nakajima, Makoto; Yoshimura, Masashi; Sarukura, Nobuhiko; Norimatsu, Takayoshi; Hangyo, Masanori; Azechi, Hiroshi; Fukuda, Tsuguo; Singidas, Bess G.; Sarmago, Roland V.; Oya, Makoto; Ueda, Yoshio.

In: Optical Materials, Vol. 62, 01.12.2016, p. 646-650.

Research output: Contribution to journal › Article

Yamanoi, K, Empizo, MJF, Mori, K, Iwano, K, Minami, Y, Arita, R, Iwasa, Y, Fukuda, K, Kato, K, Takano, K, Shimizu, T, Nakajima, M, Yoshimura, M, Sarukura, N, Norimatsu, T, Hangyo, M, Azechi, H, Fukuda, T, Singidas, BG, Sarmago, RV, Oya, M & Ueda, Y 2016, 'ZnO crystal as a potential damage-recoverable window material for fusion reactors', Optical Materials, vol. 62, pp. 646-650. https://doi.org/10.1016/j.optmat.2016.10.058

Yamanoi, Kohei ; Empizo, Melvin John F. ; Mori, Kazuyuki ; Iwano, Keisuke ; Minami, Yuki ; Arita, Ren ; Iwasa, Yuki ; Fukuda, Kazuhito ; Kato, Kosaku ; Takano, Keisuke ; Shimizu, Toshihiko ; Nakajima, Makoto ; Yoshimura, Masashi ; Sarukura, Nobuhiko ; Norimatsu, Takayoshi ; Hangyo, Masanori ; Azechi, Hiroshi ; Fukuda, Tsuguo ; Singidas, Bess G. ; Sarmago, Roland V. ; Oya, Makoto ; Ueda, Yoshio. / ZnO crystal as a potential damage-recoverable window material for fusion reactors. In: Optical Materials. 2016 ; Vol. 62. pp. 646-650.

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abstract = "Hydrothermal-grown bulk zinc oxide (ZnO) single crystals are investigated before and after 1-keV hydrogen-ion and deuterium-ion plasma irradiation. A decrease in optical transmittance, red-shifting of ultraviolet (UV) emission peaks, and shortening of UV emission lifetimes are observed from the bulk crystals immediately after irradiation. The results are attributed to the radiation-induced defects formed by hydrogen implantation. Although these defects immediately affect the optical properties of the single crystals, the optical transmittances and photoluminescence emissions recover days after irradiation. Our observations show the potential properties of a bulk ZnO single crystal as a damage-recoverable window material in high-flux-radiation environments such as those of fusion reactors.",

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AU - Yamanoi, Kohei

AU - Empizo, Melvin John F.

AU - Mori, Kazuyuki

AU - Iwano, Keisuke

AU - Minami, Yuki

AU - Arita, Ren

AU - Iwasa, Yuki

AU - Fukuda, Kazuhito

AU - Kato, Kosaku

AU - Takano, Keisuke

AU - Shimizu, Toshihiko

AU - Nakajima, Makoto

AU - Yoshimura, Masashi

AU - Sarukura, Nobuhiko

AU - Norimatsu, Takayoshi

AU - Hangyo, Masanori

AU - Azechi, Hiroshi

AU - Fukuda, Tsuguo

AU - Singidas, Bess G.

AU - Sarmago, Roland V.

AU - Oya, Makoto

AU - Ueda, Yoshio

PY - 2016/12/1

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