Study on physical, optical and luminescence of zinc tellurite glasses doped with bismuth oxide

Abstract

A series of zinc tellurite glasses of the composition (90-x) TeO₂ – 10ZnO – xBi₂O₃ by (where x = 10, 15, 20, 25 mol%) were synthesized using the conventional melt quenching technique at 1,150 ^oC for 1 hours 30 minutes. This research the physical, optical and luminescence properties of the glasses by the process just described produced. In order to understand the role of Bi₂O₃ in zinc tellurite glasses systems, the physical, optical and luminescence properties of the glasses were investigated. The result showed that density increased and molar volume increased with increasing Bi2O3 concentration. The optical absorption spectra of glasses were measured in the wavelength range of 200 – 1,100 nm for Bi₃+. The intensity of absorption also increased with increasing of Bi₂O₃ concentration. The intensity of emission bands at 602 nm increased with increasing Bi₂O₃ concentration. In addition. The luminescence properties of B_i3+ -dope TeO₂ – ZnO – Bi₂O₃ glass system were carried out using excitation wavelengths of 302 nm for Bi2O3. It was found that the luminescence peaks around 602 nm.