An Effectual Role of Molybdenum Ions on the Semiconducting Temperament of Na2O-PbO-Bi2O3-SiO2 Glasses

Abstract Melt quenching method is adopted to synthesize multi-component glasses 10Na2O –30PbO –10Bi2O3 – (50-x)SiO2 – xMoO3 (where x = 0 to 5 mol%). These samples are characterized by XRD as well as analysed by optical absorption, EPR, and FTIR spectroscopic techniques in order to discuss the structure of the glass network. The proportionate change of Mo6+ ions into Mo5+ local states, which depolymerize the glass network, is publicized by optical absorption studies. EPR spectral analysis of the samples revealed C4v symmetry in a square pyramidal with a Mo=O bond. FTIR spectra of doped glasses report the presence of MoO4 and MoO6 structural units. All spectroscopic studies propped up the semi-conducting nature of sodium lead bismuth silicate glasses doped with the higher content of MoO3.