Development of Bromide-Based Translucent Ceramics by Controlling Particle Size

Abstract

Transparent ceramics have been used in various fields such as HID lamps, optical lenses, lasers and phosphors. In recent years, our research group reported that the optically stimulated luminescence properties of transparent ceramics prepared by spark plasma sintering showed superior luminescence properties compared to those of single crystals. In this study, we focused on bromide-transparent ceramics and investigated the effects of differences in sintering conditions on the optical and optically stimulated luminescence properties. By optimizing the sintering conditions for bromides such as LiBr, NaBr, KBr, RbBr, and CsBr, we have successfully developed the transparent ceramics. Regarding optically stimulated luminescence properties, the Eu-doped CsBr showed high sensitivity to X-rays and performance comparable to commercial products.