Abstract
A series of Eu2O3-doped SiO2:Na2O:BaO:ZnO glasses was fast prepared using a microwave melting technique to investigate their structural, photoluminescence (PL), and radioluminescence (RL) properties for scintillation application. The amorphous nature of the samples was confirmed by X-ray diffraction (XRD). UV–Vis–NIR spectra provided information on optical transparency and Eu3+-related absorption features. Under optical excitation (λex = 394 nm), the glasses exhibited characteristic Eu3+ emission, and the PL intensity increase with increasing Eu2O3 concentration, indicating enhanced activation of luminescent centers. The emission chromaticity lay in the
red region with CIE (x, y) = (0.6458, 0.3538). Changes in the local symmetry around Eu3+ ions were evaluated using the electric-dipole to magnetic-dipole (ED/MD) intensity ratio and further supported by Judd-Ofelt (JO) analysis. Under X-ray excitation, the samples showed scintillation light, with maximum intensity at 3.00 mol% and integral radioluminescence efficiency is 8.9% relative to a commercial BGO scintillator. These results demonstrating promising potential for scintillation and x-ray screen.
Biography
Nakarin Singkiburin is currently pursuing a Ph.D. degree in Physics at the Faculty of Science, Nakhon Pathom Rajabhat University. My research interests focus on rare-earth-doped glass materials, scintillation materials, photoluminescence properties, and structural analysis for optical and radiation detection applications.
