期刊
JOURNAL OF LUMINESCENCE
卷 129, 期 11, 页码 1393-1397出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2009.07.013
关键词
Porous glass; Europium ions; Reduction effect; Photoluminescence and ESR spectra
类别
资金
- National Natural Science Foundation of China [60878043, 60707019]
The luminescent properties of Eu3+-doped porous glass were investigated and reduction of Eu3+ to Eu2+ was observed when the Eu3+-doped porous glasses were heat treated in air. The absorption, emission and excitation spectra of Eu3+-doped porous glasses were measured and the results significantly depended on the treating temperature. The integral intensity of Eu3+ and Eu2+ ions at different temperatures was also investigated to investigate this reduction process. Electron spin resonance (ESR) spectra of the samples were also measured, which also confirmed the reduction effect. A possible mechanism was discussed to explain this process. (C) 2009 Elsevier B.V. All rights reserved.
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