A New Perspective into the Optical Properties of Tellurite Glasses Doped with Nd3+ Nanoparticles
摘要
The synthesis of Neodymium nanoparticle (Nd3+ NPs) doped borotellurite glasses 40B2O3-(30-x)TeO2-15Y2O3-15Na2O-xNd2O3 (where x = 2, 6, and 10 mol%) was carried out using the conventional melt-quench technique. These glasses were then labelled as TN1, TN2, and TN3, respectively. The sample’s glassy structure was verified using X-ray diffraction analysis. The glasses’ densities ranged from 3.12 to 3.34 g/cm3, value was established via the use of Archimedes’ principle with toluene as the liquid used for immersion. Furthermore, a negative association was seen between the molar volume and the density. Analysed were the structural characteristics of borotellurite glasses including Nd3+ nanoparticle using FTIR. Wavelength dependent UV–visible optical absorption spectra were obtained between the 100 to 900 nm range. To calculate the Urbach energy and optical band gap, Tauc’s model was used in conjunction with the Absorption Spectrum Fitting (ASF) and Derivative Absorption Spectrum Fitting (DASF) methodologies. In the optical bandgap values derived from the ASF and DASF approaches, correlation and comparable patterns were seen.