Low-Temperature Sintering of Long Afterglow Luminescent Glass of Strontium Aluminate and Its Luminescent Properties
Dispersing-long afterglow phosphorescent powders strontium aluminate ( SrAl2O4:Eu,Dy) into amorphous inorganic glass to prepare long afterglow luminescent glass is one of the important ways to improve the stability of SrAl2O4:Eu,Dy. In this paper,the long afterglow luminescent glass of strontium aluminate was prepared by using the glass system of PbO-SiO2-H3BO3-Na2CO3-Al2O3 with low melting point,and the obtained glass samples were characterized via X-ray diffractometer,3D digital microscope,high-temperature microscope,and UV-visible spectrophotometer. The results showed that the effective encapsulation of SrAl2O4:Eu,Dy can be realized at a lower temperature of 548 ℃,the strontium aluminate luminous powders were uniformly dispersed in the glass matrix,and the luminescent glass samples ( 3％SrAl2O4:Eu,Dy) exhibited the best transmittance of 49％,with ideal afterglow performance.
long afterglowstrontium aluminateluminescent glassluminous powderstransmittance
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