Synthesis and Characterization of Y0.9-xGdxEu0.1BO3 Phosphors by Spray Drying Process
来源期刊：JOURNAL OF RARE EARTHS2004年第1期
论文作者：林君 王列松 权泽卫
Key words：optics; solid state chemistry; spherical phosphor; spray drying; rare earth borate;
Abstract: Y0.9-xGdxEu0.1BO3 phosphors were synthesized by spray drying(SD) method, and the results were compared with those by conventional solid state(SS) and citrate gel(CG) methods. The PL intensity of phosphors increases with the increase of x value in Y0.9-xGdxEu0.1BO3(prepared by SD) due to an energy migration process like Gd3+-(Gd3+)n-Eu3+ occurred in the material. Compared with the latter two methods, the phosphor particles prepared by spray drying method have a better morphology, such as homogeneous size(about 1～3 μm) with spherical shape and smooth surface. Furthermore, the spray drying-derived phosphors have higher photoluminescence(PL) intensity than those by citrate gel method, but still a little lower than those by the solid state method.
林君1，王列松1，权泽卫1
(1.Key Laboratory of Rare Earth Chemistry and Physics. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China)
Abstract:Y0.9-xGdxEu0.1BO3 phosphors were synthesized by spray drying(SD) method, and the results were compared with those by conventional solid state(SS) and citrate gel(CG) methods. The PL intensity of phosphors increases with the increase of x value in Y0.9-xGdxEu0.1BO3(prepared by SD) due to an energy migration process like Gd3+-(Gd3+)n-Eu3+ occurred in the material. Compared with the latter two methods, the phosphor particles prepared by spray drying method have a better morphology, such as homogeneous size(about 1～3 μm) with spherical shape and smooth surface. Furthermore, the spray drying-derived phosphors have higher photoluminescence(PL) intensity than those by citrate gel method, but still a little lower than those by the solid state method.
Key words:optics; solid state chemistry; spherical phosphor; spray drying; rare earth borate;
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