Synthesis and structural analysis of trivalent europium (Eu3+) ions doped oxyfluoride (ZnBiNaPSr) glasses as prominent host materials for optical devices

Abstract

Abstract A series of trivalent europium (Eu3+) ions doped zinc sodium strontium activated bismuth phosphate (P2O5-Bi2O3-Na2CO3-SrCO3-ZnF2-Eu2O3) glasses of different dopant ion compositions have been prepared by conventional melt quenching technique. Physical and optical parameters of the prepared glasses such as density (ρ), molecular weight (Mi), molar volume (VM), rare-earth ion concentration (NRE), polaron radius (rp), inter nuclear distance (ri) field strength (F), oxygen to phosphorus (O/P) ratio, refractive index (n), dielectric constant (ϵ), reflection losses (R), molar refractivity (RM), electron polarizability (αM), susceptibility (χ) oxygen packing density (OPD), metallization (M) and reflection factor (P) have been evaluated using the standard formulae. The amorphous/glassy nature was confirmed by the XRD pattern showing the broad hump cantered at 2θ=28° Surface morphological studies have been carried out using SEM analysis and EDS spectra reveal the successful incorporation of Eu3+ ions into the host matrix. Structural information was obtained from FT-IR spectra, recorded in 4000-400 cm−1 spectral region which consists of symmetrical, asymmetrical stretching and bending P=O, P-O-P, O-P-O and P-O-H vibrations along with OH- groups. Furthermore, all the prepared glasses were subjected to study for their optical and luminescence properties in detailed.