稀土学报(英文版)
稀土學報(英文版)
희토학보(영문판)
JOURNAL OF RARE EARTHS
2004年
1期
91-94
,共4页
optics%solid state chemistry%spherical phosphor%spray drying%rare earth borate
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.
