Structural, physical and optical properties of ZnO-V2O5-P2O5 glass system

Abstract

ZnO-V2O5-P2O5 glasses were synthesized by the melt-quenching technique. Fourier transformed infrared spectra reveal unshared vanadium-oxygen bonds, resulting in an increase in non-bridging oxygen bonds in the glass network. The densities of the samples were decreased from 3.112 to 2.240 g.cm−3, while the molar volumes were increased from 37.827 to 54.349 cm3.mol−1. The optical band gap of the base glass is determined to be 2.492 eV and this value was reduced to be 1.919 eV at the maximum addition of V2O5 content. The refractive index values were found to grow as the vanadium content rose. Both the optical band gap and refractive index values were discussed in the view of non-bridging oxygen formation within the glass matrix. Oxideion polarizability and interaction parameter were investigated for the glass samples.Theoretical optical basicity values of the investigated glasses were found to range between 0.399 and 0.407, indicating the tendency of oxide ionsto donate electrons to cations. The prepared glasses have high values of the optical basicity (1.077–1.267), third order non-linear optical susceptibility (0.625–1.364×10−11 esu), electronic oxide ion polarizability (2.816–4.143 Å3), and metallization criterion (0.353–0.310), implying that they can be used in non-linear optical applications.