Luminescent properties of lithium-phosphate-borate glasses doped with Tb³⁺/ Eu³⁺ ions

The luminescence of Li₂O-B₂O₃-P₂O₅-CaF₂ scintillation glass doped Tb³⁺, Eu³⁺ under different types of excitation sources are investigated. Changing the europium concentration of 0.5 to 1 wt% leads changes in luminescence intensity of Tb³⁺ ions. The luminescence spectrum of the Tb³⁺ ions are depend on the concentration of Eu³⁺. It was found, that the luminescence decay kinetics of terbium ion in the band 543 nm depending on the concentration of europium and from type of excitation. The difference in the nature of the luminescence decay kinetics of glasses under pulsed photo- and electronic excitation discussed. (paper)