Structure and emission properties of Nd3+ doped oxyfluorophosphate glasses

Abstract

Abstract The characterization of the phosphate glass system doped by the active ion Neodymium (Nd3+) has been carried out using the Melt-Quenching method. The composition of the phosphate glass is made according to the chemical formula 64P205-20Li20-15X-1Nd203 (X = CaF2 and TeO2). Testing of the physical properties of glass is carried out using the Archimedes method. Testing the structural properties of glass using X-Ray Diffraction (XRD) and Fourier-transformed infrared (FTIR). Testing the optical properties of the glass using a UV-Vis spectrophotometer. XRD results show the glass made has an amorphous structure. The FTIR results show that absorption bands occur in the area of 710-772 cm−1, 871-890 cm−1, 990-1020 cm−1,1074-1157 cm−1, and 1240-1255 cm−1. The results of physical testing showed that the glass density increased and the molar volume decreased with the addition of CaF2 and TeO2 compounds. The highest absorption spectrum is at the transition 4I9/2 → 4G5/2 + 2G7/2 at a wavelength of 582 nm. The lowest direct and indirect bandgap energies are owned by PLTNd (use TeO2) glass, namely 3.30 eV and 3.85 eV. The highest emission spectra are in the two emission band transitions 4F3/2 → 4I11/2 and 4F3/2 → 4I13/2 with wavelengths of 1063 nm and 1334 nm. The highest emission spectrum is produced by PLCNd (use CaF2) glass.