Glass Materials for Emission Stabilization Under High Temperatures

By melt-quenching technique, sixteen samples of lithium diborate glass doped with Er³⁺, Yb³⁺, Dy⁺³ and containing Ag and Cu nanoparticles were synthetized. SEM micrograph is presented. X-ray diffraction patterns of all samples reveal their amorphous structure. Physical properties such as density, molar volume and boron-boron separation of amorphous materials are shown. UV–Vis-IR absorption spectra of all samples were recorded and display the characteristic bands of the used rare earths; all absorption bands present an enhancement with increasing metallic nanoparticles concentration. The estimated optical energy band gap of the samples was obtained using the Tauc plot method. Emission spectra of doped samples were collected in the temperature range from 30 to 180 °C. The results of emission under temperature indicate that the addition of metallic nanoparticles (Ag and Cu) in glass matrices are responsible for emission stabilization in samples when the temperature is increased creating a glass material for photonics and thermal sciences.