Blue fluorescent powder for white light LED and preparation method of blue fluorescent powder

The invention relates to the technical field of rare earth luminescent materials and relates to blue fluorescent powder for a white light LED. The blue fluorescent powder has a chemical expression formula as follows: Ca1-xM6(SiO4)2(PO4)2:xEu, wherein M represents any one of Mg and Zn, and x represents 0.001-0.1. The blue fluorescent powder for the white light LED has good chemical stability and thermal stability, the raw materials are cheap and easily available, and the production cost is low. 本发明涉及稀土发光材料技术领域。种白光LED用磷酸盐蓝色荧光粉，具有如下化学表示式：CaM(SiO)(PO)：xEu，其中，M为Mg和Zn中任意种，x为0.001～0.1。该白光LED用磷酸盐蓝色荧光粉具有化学稳定性和热稳定性良好，原料价廉易得生产成本低。