Phenomenon of Eu3+ self-reduction induced by B2O3 configuration structure in sodiumborate glasses
作者： Qing Jiao , Xue Yu , Xuhui Xu , Dacheng Zhou , Jianbei Qiu
DOI: 10.1063/1.4816445
关键词: Infrared 、 Photoluminescence 、 Raman spectroscopy 、 Doping 、 Crystallography 、 Mineralogy 、 Boron 、 Amorphous solid 、 Materials science 、 Infrared spectroscopy 、 Molecular vibration
摘要: The self-reduction of Eu3+ to Eu2+ is realized in Eu2O3 doped sodiumborate glasses the air condition. With increasing B2O3 concentration, blue emission significantly enhanced while 615 nm soon decreased. calculation result indicates that [BO4] tetrahedron are gradually replaced by [BO3] triangle with network former glass matrix. According infrared and Raman spectra analysis, high polymeric structure depolymerized mainly from complicated framework linking smaller planar BO3-triangles consisted units. Accordingly, characteristic vibrations relevant peaks reflected orthoborate groups, boroxol rings, pyroborate units, etc., decomposed glasses. In addition, effect variation on mechanism reduction borate discussed.
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