検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

Effects of implantation conditions on the luminescence properties of Eu-doped GaN

EuドープしたGaNの発光特性の注入条件依存性

中西 康夫*; 若原 昭浩*; 岡田 浩*; 吉田 明*; 大島 武; 伊藤 久義; 中尾 節男*; 斎藤 和雄*; Kim, Y. T.*

Nakanishi, Yasuo*; Wakahara, Akihiro*; Okada, Hiroshi*; Yoshida, Akira*; Oshima, Takeshi; Ito, Hisayoshi; Nakao, Setsuo*; Saito, Kazuo*; Kim, Y. T.*

サファイア基板上にエピタキシャル成長した窒化ガリウム(GaN)(0001)へEuイオンを注入し、フォトルミネッセンス発光特性を調べた。室温でEuイオンを多段階のエネルギーで注入することで2.8$$times$$10$$^{19}$$から2.8$$times$$10$$^{20}$$/cm$$^{3}$$のEu濃度層を形成した。注入後、NH$$_{3}$$,N$$_{2}$$雰囲気中で900から1050$$^{circ}C$$の温度範囲で5から30分間熱処理することで結晶を回復させた。その結果、621nm付近にEu$$^{3+}$$の4f-4f遷移に起因する鋭い発光ピークが観測された。このピーク強度はEu濃度の増加とともに増加したが2.8$$times$$10$$^{20}$$/cm$$^{3}$$では飽和した。

Photo luminescence properties of GaN implanted with Eu ions were studied. The GaN was epitaxialy grown on sapphire substrate. Multiple-implantation at RT was done to form box profile of Eu at a mean Eu concentration from 2.8$$times$$10$$^{19}$$ to 2.8$$times$$10$$^{20}$$/cm$$^{3}$$. Samples were annealed in NH$$_{3}$$, N$$_{2}$$ at 900-1050$$^{circ}$$C for 5-30 min after implantation. As the result, sharp emission peaks around 621nm which is assigned as 4f-4f transition were observed. The intensity of peaks increases with increasing Eu concentration and saturate at Eu concentrations around 2.8$$times$$10$$^{20}$$/cm$$^{3}$$.

Access

:

- Accesses

InCites™

:

パーセンタイル:74.43

分野:Instruments & Instrumentation

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.