Journal
JOURNAL OF SOLID STATE CHEMISTRY
Volume 202, Issue -, Pages 65-69Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2013.03.005
Keywords
Eu3+ reduction; Borate glasses; Depolymerization effect; Glass structure
Funding
- 973 Program [2011CB211708]
- Foundation of Application Research of Yunnan Province [2009CC009]
- National Natural Science Foundation of China [61265004, 51272097]
- nature and science fund from Yunnan province ministry of education [2011C13211708]
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The reduction of Eu3+ to Eu2+ is realized efficiently in Eu2O3-doped borate glasses prepared under air condition by melting-quenching method. Luminescent spectra show an increasing tendency of Eu2+ emission with increasing Al2O3 concentration in B2O3-Na2O glasses. It is interesting that significant enhancement appeared of Eu2+ luminescence in the Al2O3-rich sample comparing to the samples of Al2O3 less than 6 mol%. FTIR and Raman scattering measurements indicated that some new vibration modes assigned to the low-polymerized structure groups decomposed from the slight Al2O3 dopant samples. These results demonstrated that the polymerization of the glass structure decreased with increasing incorporation of Al2O3 into the borate glasses, linking to the efficiency of Eu3+ self-reduction in air at high temperature. (C) 2013 Elsevier Inc. All rights reserved.
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