Green phosphor of spherical RE phosphate and its prepn

The present invention is green phosphor of spherical RE phosphater and its preparation process. The green phosphor has chemical molecular expression of (Lax, Cey, Tbz) PO4, and is one kind of spherical crystal with particle size of 2-10 microns and central particle size D50 of 3-6 microns. the green phosphor of spherical RE phosphate may be prepared via liquid phase precipitation process. It has regular particle shape, homogeneous size distribution, better performance and simple preparation process. 本发明公开了一种球形稀土磷酸盐绿色荧光粉及其制备方法。本发明的绿色荧光粉，其化学分子式为：(La#-[x]，Ce#-[y]，Tb#-[z])PO#-[4]，为一种球形晶体，其粒度分布为2-10μm，中心粒径D#-[50]为3～6μm。上述的绿色荧光粉可采用液相沉淀法制备，采用本发明的方法所获得的稀土磷酸盐绿色荧光粉为晶体，其粒度分布为2-10μm，中心粒径D#-[50]为3～6μm，粒子形态规则，大小分布均匀，荧光粉光性能较好，制备工艺简单，制作方便，便于推广使用。