Optical properties of bismuth tellurite based glass

Abstract

A series of binary tellurite based glasses (Bi 2O 3) x (TeO 2) 100-x was prepared by melt quenching method. The density, molar volume and refractive index increase when bismuth ions Bi 3+ increase, this is due to the increased polarization of the ions Bi 3+ and the enhanced formation of non-bridging oxygen (NBO). The Fourier transform infrared spectroscopy (FTIR) results show the bonding of the glass sample and the optical band gap, E opt decreases while the refractive index increases when the ion Bi 3+ content increases. © 2012 by the authors; licensee MDPI, Basel, Switzerland.