Abstract
In the present study, cerium-doped (0–1 mol%) strontium borophosphate (SBP) glasses were prepared through the melt quenching method. The structural and thermal properties of the glasses were investigated using XRD, FT-IR and TG–DTA. The elemental mapping of Ce-doped glasses was carried out using energy-dispersive X-ray (EDX). The photoluminescence (PL) excitation spectrum of Ce-doped SBP glass exhibited two peaks at 264 and 315 nm, and the emission spectrum exhibited a broad peak around 360 nm. PL lifetime measurements of Ce3+ indicated two lifetimes (< 25 ns) suggesting its presence at two different sites. The PL intensity and lifetime of Ce3+ increased with the increase in Ce-concentration up to 0.3 mol% and beyond that it decreased due to concentration quenching. Thermally stimulated luminescence (TSL) of γ-irradiated (40 Gy) SBP: Ce glasses showed a broad glow peak around 629 K. TSL intensity increased with the increase in Ce-concentration up to 0.5 mol% and beyond that it decreased. TSL trap parameters such as trap depth, frequency, symmetry and the order of kinetics were determined to explore the dosimetric properties of the material.
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