Sol-gel processing of BaMgF4-Eu2+ thin films and their violet luminescence

Shinobu Fujihara, Y. Kishiki, T. Kimura

研究成果: Article

25 引用 (Scopus)

抄録

BaMgF4-Eu2+ thin films were prepared from trifluoroacetate precursor solutions by a sol-gel method and their violet luminescence was investigated. A (Ba,Eu)MgF4 phase was obtained by heating the spin-coated precursor films at temperatures of 550-650°C. The reduction of Eu3+, which originated from Eu(CH3COO)3·4H2O in the precursor, to Eu2+ in the heat-treated films was evidenced by the strong, broadband 4f-5d excitation at 290 nm and emission at 420 nm in photoluminescence measurements. The intensity of violet luminescence of Eu2+ depended on the heating temperature, heating time and the Eu concentration. The strongest violet emission was observed with the BaMgF4-Eu (15 mol%) film that was heated at 650°C for 10 min under the present experimental conditions.

元の言語English
ページ(範囲)76-80
ページ数5
ジャーナルJournal of Alloys and Compounds
333
発行部数1-2
DOI
出版物ステータスPublished - 2002 2 14

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Sol-gels
Luminescence
Heating
Thin films
Processing
Trifluoroacetic Acid
Sol-gel process
Photoluminescence
Temperature
Hot Temperature

ASJC Scopus subject areas

  • Metals and Alloys

これを引用

Sol-gel processing of BaMgF4-Eu2+ thin films and their violet luminescence. / Fujihara, Shinobu; Kishiki, Y.; Kimura, T.

:: Journal of Alloys and Compounds, 巻 333, 番号 1-2, 14.02.2002, p. 76-80.

研究成果: Article

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N2 - BaMgF4-Eu2+ thin films were prepared from trifluoroacetate precursor solutions by a sol-gel method and their violet luminescence was investigated. A (Ba,Eu)MgF4 phase was obtained by heating the spin-coated precursor films at temperatures of 550-650°C. The reduction of Eu3+, which originated from Eu(CH3COO)3·4H2O in the precursor, to Eu2+ in the heat-treated films was evidenced by the strong, broadband 4f-5d excitation at 290 nm and emission at 420 nm in photoluminescence measurements. The intensity of violet luminescence of Eu2+ depended on the heating temperature, heating time and the Eu concentration. The strongest violet emission was observed with the BaMgF4-Eu (15 mol%) film that was heated at 650°C for 10 min under the present experimental conditions.

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