| Abstract: | The green long-after-glow luminescence from Tb3+-doped Sr2SiO4phosphors, which are synthesized by the high temperature solid state reaction in a reductive atmosphere, is observed in this paper. The results show that under ultraviolet excitation, the obtained phosphors produce an intense green-lighting-emission from the Tb3+, and the green-lighting longafter-glow luminescence related to Tb3+can last half an hour after the irradiation source has been removed. Moreover,the effects of co-doping Li+, Dy3+, Er3+, Gd3+, and Yb3+with Tb3+on the decay properties and thermoluminescence properties are investigated to confirm the long-after-glow mechanism. |
