Photoluminescence properties of Ba-substituted SrAl2O4:Eu phosphor

The synthesis of Sr1-xBaxAl2O4:Eu2+ (x = 0, 0.1, 0.2 and 0.3 mol) phosphor and its properties of photoluminescence and long-phosphorescence were investigated as a function of sintering condition. The single phase of SrAl2O4 was obtained by sintering the mixtures of SrCO3, BaCO3, EU2O3, Al2O3 and 3wt% B2O3 powders over 1000degreesC in Ar/H-2 atmosphere. Stuctural properties were analyzed by a X-ray diffractometer, microstructural properties by a SEM, and photoluminescent properties by a PL measuring system. The optimum sintering condition for the long-phosphorescent phosphor of Sr(1-x)Ba(x)A1(2)O(4):Eu2+ was found at 1400degreesC. Substitution of Ba about 0.2mol in SrAl2O4:Eu2+ enhanced the photoluminescence and long-phosphorescence.