NIR emission studies and dielectric properties of Er3+-doped multicomponent tellurite glasses

Abstract

Multicomponent tellurite glasses containing altered concentrations of Er 2 O 3 (ranging from 0 to 1 mol%) were prepared by the standard melt quenching technique. Investigations through energy dispersive X-ray spectroscopy (EDS), Raman scattering spectroscopy, FTIR spectroscopy, NIR emission studies and dielectric measurement techniques were done to probe their compositional, structural, spectroscopic and dielectric behaviour. The influence of erbium ion concentration on the infrared emission (~1.53 m) of these glasses and their respective lifetimes were measured. From the measured capacitance and dissipation factor, the relative permittivity, dielectric loss and the conductivity were computed; which furnish the dielectric nature of the multicomponent tellurite glasses that depend on the frequency of the applied LCR meter. Assuming the ideal Debye behaviour as substantiated by Cole-Cole plot, an examination of the real and imaginary parts of impedance is performed. The power-law and Cole-Cole parameters were resolved for all the glass samples. From the assessment of the NIR emission analysis and dielectric properties of the glass samples, it is manifested that the Er 3+ ion concentration has played a vital role in tuning the optical and dielectric properties and the 0.5 mol% Er 3+-doped glass is confirmed as the finest composition.

Thermogravimetric and temperature-dependent electrical investigations of Pr3+ doped multi-component silicate glasses for microelectronic technology

“…The conductivity in the present system of glasses is predominantly governed by the CBH modeling since the values of s decrease with temperature. The model relates the conductivity to the hopping of electrons by overcoming the Coulombic barrier between the charged defects in the glass matrix [69]. Furthermore, it could be stated that each charge experiences a repulsive potential from the neighboring charges.…”

Photoionic Effect Imposed by Photoresponsive Local Field in a Tellurate Glass with Lanthanide Ions and Ag Nanoparticles

“…20 Compared with other glass matrices such as silica, rare earths in tellurate glass as laser materials have higher solubility, larger emission cross sections, and reduced probability of multiphoton relaxation of excited states (less generated heat). 21 The addition of alkali and transition metal ions as glass modifiers into tellurate glass can be the mixed ionelectron (MIE) glass. 22 Hence, the tellurate glass is the object's transparent matrix in this study.…”

“…Oxide glass with TeO 2 as glass former is potentially applicable in sensor, optomagnetic measurement, radiation shielding, and optical devices . Compared with other glass matrices such as silica, rare earths in tellurate glass as laser materials have higher solubility, larger emission cross sections, and reduced probability of multiphoton relaxation of excited states (less generated heat) . The addition of alkali and transition metal ions as glass modifiers into tellurate glass can be the mixed ion-electron (MIE) glass .…”