Multiple Studies on Fluorophosphate Glasses Doped with Different Transition Metals: Insight into Photoluminescence and Dielectric Properties

Abstract

Different novel fluorophosphate glasses with the chemical composition of 20NaF-60P2O5 -20Na2O doped with 3wt% of CuO, CoO, Fe2O3 , and NiO were fabricated by quenching melting. The influence of doped transition metals on photoluminescence (PL) and dielectric properties was investigated. It was found that the system doped with Fe2O3 displayed the lowest PL intensity compared to the highest PL intensity for CuO. Adding CoO and Fe2O3 increased the dielectric constant and dielectric loss of the hosting system by improving dipole polarization. Doping with CoO and Fe2O3 raised the computed energy density of the base system, but adding NiO and CuO decreased it. AC conductivity of the base system was improved after doping with CoO and Fe2O3 , ascribed to increased polaron hopping between their ions in the valence states. Conversely, doping with CuO and NiO reduced the σ ac of the hosting system due to impeding charge carrier mobility.

Keywords: Fluorophosphates, dielectric, Photoluminescence, transition metals