Abstract
We fabricated 20Li2O-20B2O3-60SiO2 glasses by the melt quenching method and doped Tb with a variety of concentrations from 0.03 to 3.0 %. The Tb-doped glasses showed several sharp emission peaks derived from Tb3+ in the photoluminescence (PL) and the thermally stimulated luminescence (TSL) spectra. The PL quantum yield decreased as the Tb concentration decreased. The PL decay times of the Tb-doped samples were approximately 3.0 ms which was the typical feature of Tb3+. The TSL glow peak was observed at around 75 °C, and the 1.0% Tb-doped sample indicated the highest TSL intensity. The Tb-doped samples worked as a TSL dosimeter in the range of 0.1–1000 mGy X-ray irradiation.
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