期刊
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷 158, 期 10, 页码 P118-P121出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.3625282
关键词
barium compounds; europium; light emitting diodes; phosphors; photoluminescence; quenching (thermal); spectral line shift; strontium compounds; ultraviolet spectra
资金
- National Science Council [NSC 97-2113-M-002-012-MY3, NSC 97-3114-M-002-002]
Samples of (Sr1.9-xBax)SiO4:Eu-0.1 were synthesized by a solid-state reaction. The maximum emission intensity under 460 nm excitation was obtained at a Ba content, x, of 1.6. All Sr1.9-xBaxSiO4:Eu-0.1 samples except for Ba1.9SiO4:Eu-0.1 exhibited a temperature-driven blue-shift of the emission band. The thermostability of emission in (Sr1.9-xBax)SiO4:Eu-0.1 depended strongly on the Ba/Sr ratio. The thermal quenching temperature reached its maximum at a Ba concentration x of 1.2-1.6 and was much lower for Ba1.9SiO4:Eu-0.1(2+). (C) 2011 The Electrochemical Society. [DOI: 10.1149/1.3625282] All rights reserved.
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