Ammonolysis-free synthesis of La2O2CN2 by cyanamidation of La(OH)3 using urea, and its photoluminescence properties

Ceramics International 45 巻 7 号 9325-9329 頁 2019-05 発行
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タイトル ( eng )
Ammonolysis-free synthesis of La2O2CN2 by cyanamidation of La(OH)3 using urea, and its photoluminescence properties
作成者
Okada Ryoki
Kawanishi Kodai
収録物名
Ceramics International
45
7
開始ページ 9325
終了ページ 9329
抄録
A facile method was successfully developed to prepare lanthanum oxycyanamide, La2O2CN2. Urea was selected as a cyanamidation agent, instead of gaseous NH3 with graphite containers, to achieve a safe and simple synthetic strategy. Through the optimization of reaction conditions, including content of urea and heat-treatment temperature, single-phase La2O2CN2 could be obtained without any impurities. We also prepared a La2O2CN2:Eu3+ phosphor. The Eu3+-doped La2O2CN2 matrix showed a red emission. Furthermore, in comparison with La2O3:Eu3+, the photoluminescence excitation bands corresponding to the Eu3+–ligand charge transfer region were broadened. These results suggested that La2O2CN2 prepared via the urea route will offer superb application prospects for photoluminescence materials such as white light-emitting diodes.
著者キーワード
Oxycyanamide
Carbodiimide
Mixed anion compound
Phosphor
Urea
内容記述
This work was supported by JSPS KAKENHI Grant Numbers JP17H05483 and JP17H03392. This work was partly supported by the Center for Functional Nano Oxide at Hiroshima University, Japan.
アクセプト後にキーワードの変更あり。
言語
英語
資源タイプ 学術雑誌論文
出版者
Elsevier
発行日 2019-05
権利情報
© 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
This is not the published version. Please cite only the published version. この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。
出版タイプ Author’s Original(十分な品質であるとして、著者から正式な査読に提出される版)
アクセス権 オープンアクセス
収録物識別子
[ISSN] 0272-8842
[DOI] 10.1016/j.ceramint.2019.01.262
[DOI] https://doi.org/10.1016/j.ceramint.2019.01.262
備考 Post-print version/PDF may be used in an institutional repository after an embargo period of 24 months.