Optical properties of the B2O3–CdO–ZnO–Li2O glasses modified with MoO3

Abstract

Using optical investigations, this report analyzes the impact of MoO3 on lithium zinc cadmium borate glasses. The authors made glasses with the formula 60B2O3–20CdO–10ZnO–(10-x)Li2O–xMoO3 (Where x = 0, 0.5, 1, 1.5 & 2) and the samples were employed to UV–Visible and Electron paramagnetic resonance (EPR) experimental instruments. In order to determine the band gap, refractive index, and Urbach energy, optical absorption spectra are used. With the MoO3 in these glasses, the band gap was lowered while the refractive index improved. High MoO3 concentrations with high refractive indices make these glasses useful for optical applications. Two resonance signals were visible in the EPR spectra, one at g = 4.2 and the other with g = 1.95. The second signal shows that Mo5+ ions have occupied the sites of octahedral coordination with a mild axial distortion and C4V symmetry.