Optical damage assessment and recovery investigation of hydrogen-ion and deuterium-ion plasma-irradiated bulk ZnO single crystals

Melvin John F. Empizo, Kohei Yamanoi, Kazuyuki Mori, Keisuke Iwano, Yuki Iwasa, Yuki Minami, Ren Arita, Kazuhito Fukuda, 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 OyaYoshio Ueda

研究成果: Contribution to journalArticle査読

5 被引用数 (Scopus)

抄録

In realizing zinc oxide (ZnO) scintillator applications, we assess the optical damage and investigate the recovery of hydrogen-ion (H-ion) and deuterium-ion (D-ion) plasma-irradiated bulk ZnO single crystals. Hydrothermal-grown bulk crystals are irradiated with H-ion and D-ion beams with 1 keV energy and ∼ 10 20 m − 2 s − 1 flux. After irradiation, the single crystals exhibit decreased visible transparencies, redshifted ultraviolet (UV) emission peaks, shortened UV emission lifetimes, and suppressed visible emission bands. These changes in the optical transmittances and photoluminescence emissions are attributed to the generation of defects during irradiation and to the interaction of hydrogen with other defects and/or impurities. Although modified by ion irradiation, the optical properties of the ZnO crystals, except for the UV emission lifetimes, recover hours after without any sample treatment and only at room temperature. Compared with the H-ion-irradiated sample, the D-ion-irradiated crystal has a slower recovery which may be related to the ions' masses, energy losses, and absolute diffusivities. Our results nevertheless show that bulk ZnO single crystals exhibit resistance to and recovery from H-ion and D-ion irradiation and can therefore be used as scintillator materials for radiation detectors inside future fusion reactors.

本文言語英語
論文番号175102
ジャーナルJournal of Applied Physics
121
17
DOI
出版ステータス出版済み - 5 7 2017
外部発表はい

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

フィンガープリント

「Optical damage assessment and recovery investigation of hydrogen-ion and deuterium-ion plasma-irradiated bulk ZnO single crystals」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル