✦ LIBER ✦
On the origin of near-IR luminescence in Bi-doped materials (I). Generation of low-valence bismuth species by Bi3+ and Bi0 synproportionation
✍ Scribed by Alexey N. Romanov; Zukhra T. Fattakhova; Denis M. Zhigunov; Vladimir N. Korchak; Vladimir B. Sulimov
- Book ID
- 104075724
- Publisher
- Elsevier Science
- Year
- 2011
- Tongue
- English
- Weight
- 341 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0925-3467
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✦ Synopsis
Creation of bismuth-containing near-infrared (NIR) luminescent centers by synproportionation reaction of Bi 3+ and Bi 0 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.