Raman spectroscopy studies of Er3+-doped zinc tellurite glasses

The effects of ZnCl2 and ErCl3 on the vibrational spectra and structure of tellurite glasses

“…4 and 5 show that the addition of ZnCl 2 and ErCl 3 modifiers led to a blue shift of the high frequency peak, due to an increase in frequency in the TeO 3 vibration, motivated by the increasing concentration of NBO species. This shift has also been observed [12] for erbium oxide doped glasses. One should notice, however, that this shift is continuous with the introduction of ErCl 3 (at least up to 10 mol%, Fig.…”

“…Therefore, higher Er 3+ content can be incorporated with reduced ion clustering and stronger photoluminescence efficiency [5]. On the other hand, erbium doping has been shown to have an effect on the structure of purely oxide zinc tellurite glasses [12,13].…”

Enhancement of Pr3+ luminescence in TeO2–ZnO–Nb2O5–MoO3 glasses containing silver nanoparticles

“…According to reported in literature [34], an increase in the 440 cm hedra into TeO 4 tbps having less NBO atoms. So, the addition of Ag to TeO 2 -based glasses forms more Te-O-Te bonds, thus leading to an increase in the Te coordination number.…”

Spectral broadening and luminescence quenching of 1.53μm emission in Er3+-doped zinc tellurite glass

“…The results show that the erbium ion acts as a lattice modifier in the binary tellurite glasses, i.e., it converts TeO 4 tbp units to primarily TeO 3 trigonal pyramids units, and possibly some terminal TeO 3+1 polyhedra [39]. The significant change of the 450 cm À1 Raman band, associated with the Te-O-Te linkages, is attributed to a structure disruption of the tellurite network and to a decrease in the Te coordination number as the erbium content increases [40]. Initially, TZ glass contains a variety of structural motives (TeO 4 , TeO 3 , and TeO 3+1 ) due to the presence of Zn 2+ modifier ions, which give rise to a large distribution of structural sites.…”