Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1495791 | Optical Materials | 2011 | 4 Pages |
Creation of bismuth-containing near-infrared (NIR) luminescent centers by synproportionation reaction of Bi3+ and Bi0 was demonstrated in borate and phosphate glasses. This finding is discussed in the light of low-valence nature of bismuth NIR-luminescent centers. The experimental data is consistent with the hypothesis of univalent Bi+ (and, possible, subvalent cluster Bi ions) as a source of NIR luminescence. The dependence of Bi luminescent centers stability on oxoacidity of glass melts was discussed.
Research highlights► Subvalent bismuth species possess NIR luminescence in glass matrices. ► Luminescent centers prepared by Bi3+ reaction with Bi metal in glass melt. ► High oxoacidity of melt is required for luminescent centers stabilization.