Study on luminescence properties of Tb3+-doped stoichiometric gallosilicate glasses and glass ceramics

Compounds with crystallization and vitrification capabilities can achieve more uniform grains with higher crystalline density after glass crystallization, improving the fluorescence properties of glass ceramics (GCs). In this work, a series of Tb 3+ -doped SrLa 2 Ga 4 Si 2 O 14 glasses and glass ceramics were prepared through traditional melt quenching and thermal treatment. The glass exhibits good transmittance and a sharp exothermic peak at 961 ºC. The photoluminescence and radioluminescence properties were studied in detail, and the Tb 3+ aggregation in glass and GC was discussed. Compared with the glasses, the opaque GCs show inferior fluorescence properties but better X-ray irradiated fluorescence, about 10% of the integrated emission intensity of the commercial BGO scintillation crystal. More precise processing in glass–ceramics towards homogeneous crystallization and good transmittance need to be addressed, and a promising scintillator with improved scintillating performance can be expected.