Influence of Sintering Conditions on the Optical Properties of Long Afterglow Luminescence Glass

SrAl2O4:Eu,Dy long afterglow luminescence powders and low melting point B-Si glass were employed as the sources, and synthesized the long afterglow luminescence glass at suitable conditions. The results of experiments indicate that sintering temperature and soaking time have great influence on the properties of the glass, and the luminescence effect will decrease as sintering temperature and soaking time increase. In this experiment, sintering temperatures were chosen at 750-800℃ and soaking time was maintained about 10min. Under those conditions, a serious of luminescence glass with good properties was prepared. The decay curves indicate that the luminescent properties of the luminescence glass decrease compared with its original phosphor powders. The analytical results of SEM indicate that the glass prepared at low temperature containes more luminescent powders for long afterglow than that of prepared at relatively high temperature.