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On the origin of near-IR luminescence in Bi-doped materials (I). Generation of low-valence bismuth species by Bi super(3+) and Bi super(0) synproportionation
Ist Teil von
Optical materials, 2011-02, Vol.33 (4), p.631-634
Erscheinungsjahr
2011
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Creation of bismuth-containing near-infrared (NIR) luminescent centers by synproportionation reaction of Bi super(3+) and Bi super(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 super(+) (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.