Optical and electrical properties of Nd3+doped Na2O-ZnO-TeO2 Material

TL;DR

This study investigates the optical, electrical, and structural properties of Nd3+-doped Na2O-ZnO-TeO2 glasses, revealing how doping affects bandgap energy, emission intensity, and conduction mechanisms.

Contribution

It provides new insights into how Nd3+ doping influences the optical and electrical properties of Na2O-ZnO-TeO2 glasses, including bandgap reduction and enhanced emission.

Findings

Bandgap energy decreases with increased Nd3+ doping

Emission intensity is higher at greater Nd3+ concentrations

Dielectric constant remains stable across a wide frequency range

Abstract

Neodymium doped Na2O-ZnO-TeO2 (NZT) glasses were prepared by the conventional melt quenching technique. DTA and TG were used to confirmation of glass preparation through the glass transition temperature at 447{\deg}C for the glass system. The analysis of FTIR spectra and X-ray diffraction described the nature of the samples were ionic and amorphous respectively. The optical bandgap energy was estimated using absorption spectra and found to be decreased from 2.63eV to 1.32 eV due to the increase of doping concentration. The intensity of the emission spectra was enhanced for the higher concentration of Nd3+ ions. The dielectric constant of the glass samples was found to be constant for the large range of frequency (3 kHz to 1 MHz). The variation of conductivity with the temperature of the samples had shown the Arrhenius mechanism of conduction.