Scintillation, TSL and OSL properties of Ce-doped 30Zn₃(PO₄)₂-70Al(PO₃)₃ glasses

In this study, we have synthesized 30Zn₃(PO₄)₂-70Al(PO₃)₃ glass samples doped with different concentrations of Ce (0, 0.1, 0.3, 1.0, and 3.0 mol%) by the conventional melt quenching method, and we have evaluated the optical, scintillation and dosimeter properties such as thermally-stimulated luminescence (TSL) and optically-stimulated luminescence (OSL). The photoluminescence (PL) spectrum showed an intense emission band due to the 5d–4f transitions of Ce³⁺ ion peaking at 330 nm as well as a weak emission due to the host at 440 nm. The decay times of corresponding emissions were 20–24 ns and 7 ns, respectively. The scintillation emissions also showed intense emissions at 330 and 440 nm due to the Ce³⁺ ion and host, and the decay times were 7–13 ns and 31–35 ns, respectively. The TSL glow peaks were observed mainly around 150–190 °C for Ce-doped samples while the non-doped sample showed a glow peak around 300–400 °C. The TSL intensity increases with increasing the X-ray dose delivered, and the dose response curve showed a good linearity over the dose range of 0.01–10 Gy. The OSL was observed around 330 nm during the stimulation at 410 nm.