Optical and luminescent properties of Pr-doped Li2O MgO Al2O3SiO2 glasses

Abstract A high conversion efficiency is a key factor for phosphor applications. Because the number of studies on the 5d–4f emissions of Pr3+ in oxide glasses has been limited, it is worth examining the relationship between the luminescence properties of Pr3+ and the chemical composition of the glass. Herein, we demonstrate the luminescence properties of Pr3+-doped aluminosilicate glasses. Although the internal quantum efficiency is not as high as that of conventional Ce3+-doped glasses, a faster decay (on the order of nanoseconds) is attractive for many different applications. An emissions band can be observed under X-ray irradiation, which differs significantly from photoluminescence. Although the Pr3+–P-codoped samples exhibit higher quantum efficiency than P-free glass owing to a blue shift of the optical absorption edge, the effect of P doping was not observed during X-ray induced scintillation or in the pulse height spectra under 252Cf irradiation.