TY - JOUR
T1 - ZnO crystal as a potential damage-recoverable window material for fusion reactors
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
N1 - Funding Information:
This work was supported by the Japan Society for the Promotion of Science (JSPS) through the Grants-in-Aid for Scientific Research (KAKENHI) Grant Number 15K18304 .
PY - 2016/12/1
Y1 - 2016/12/1
N2 - 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.
AB - 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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U2 - 10.1016/j.optmat.2016.10.058
DO - 10.1016/j.optmat.2016.10.058
M3 - Article
AN - SCOPUS:85003583766
VL - 62
SP - 646
EP - 650
JO - Optical Materials
JF - Optical Materials
SN - 0925-3467
ER -