Effect of Tb~(3+) concentration and sensitization of Ce~(3+) on luminescence properties of terbium doped phosphate scintillating glass

摘要

Phosphate glasses doped with different concentrations of Ce~(3+) and Tb~(3+) were prepared by high temperature melting method. Effects of Tb~(3+) concentration and sensitization of Ce~(3+) on photoluminescence and radio-luminescence properties of terbium doped phosphate glass have been investigated by absorption, excitation and emission spectroscopy. Results showed the phosphate glass exhibit high broad absorption band attribute to the allowed 4f~8-4f~7 5d transition of Tb~(3+), which is beneficial for the 542 nm emission of Tb~(3+). It is found that the emission intensity of Tb~(3+) at 542 nm increased as the concentration of Tb~(3+) and Ce~(3+)increasing.