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

• Okada, Ryoki

• Kawanishi, Kodai

• Katagiri, Kiyofumi

• Inumaru, Kei

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.

収録刊行物

• Ceramics International

  Ceramics International 45 (7), 9325-9329, 2019-05

  Elsevier

キーワード

• Oxycyanamide
• Carbodiimide
• Mixed anion compound
• Phosphor
• Urea

詳細情報

• CRID: 1050296265984179584
• NII論文ID: 120007041542
• DOI: 10.1016/j.ceramint.2019.01.262
• ISSN: 02728842
• Web Site: http://ir.lib.hiroshima-u.ac.jp/00049716
• Web Site: https://api.elsevier.com/content/article/PII:S0272884219302846?httpAccept=text/xml
• Web Site: https://api.elsevier.com/content/article/PII:S0272884219302846?httpAccept=text/plain
• 本文言語コード: en
• 資料種別: journal article
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