Raman studies and some physical properties of selected (PbO)x(Nb2O5)y(TeO2)1−x−y glasses

Influence of tungsten on the emission features of Nd3+, Sm3+ and Eu3+ ions in ZnF2–WO3–TeO2 glasses

“…In view of such qualities, these glasses find potential applications as IR domes, optical fibers, modulators, non-linear optical devices and infrared laser windows. These are also considered as good glasses for hosting rare earth ions since they provide a low phonon energy (∼750 nm, lower than geramanate, phosphate and silicate glasses) environment that minimizes non-radiative losses [6][7][8]. The presence of tungsten ions in these glasses, further, makes them suitable for optoelectronic devices since they exhibit photochromism and electrochromism properties.…”

“…Among these, W 6+ ions participate in the glass network with different structural units like WO 4 (T d ) and WO 6 (O h 3 in the glass network results varying environment of luminescent ions present in the tellurite glass network. As a consequence, interesting changes in the luminescent characteristics of lasing ions is expected.…”

Formation kinetics of Sr0.25Ba0.75Nb2O6 and Li2B4O7 crystals from 0.25SrO–0.75BaO–Nb2O5–Li2O–2B2O3 glass

“…The largest intensity peak P9 centered at 820 cm À1 in the glass state can be mostly assigned to the vibration of Nb-O stretching mode of much distorted NbO 6 octahedra. 37 With the formation of SBN + LBO crystals at 650 C, the intensity of P9 in the glass phase drastically decreases, meanwhile, the peak P6 centered at 640 cm À1 which is assigned as symmetric Nb-O stretching vibration of NbO 6 octahedra with 3-dimensional network strongly increases. 38 This indicates that Nb-O branch is very Raman scattering sensitive in the system during crystallization and the change in vibration energy and intensity can be a direct representation of transition from the disordered glass network to high dimensional crystal structure.…”

Understanding the influence of tellurium oxide in front Ag paste for contacting silicon solar cells with homogeneous high sheet resistance emitter

“…This result is quite consistent with the phase changes with TeO 2 before and after anneal at high temperatures. [18][19][20][21][22][23] Typically after annealing, there is a formation of the γ-TeO 2 , which is a crystalline phase. 24) The Raman spectra in Fig.…”