作　　者： ; ; ; ; ;

机构地区： 华东理工大学材料科学与工程学院超细材料制备与应用教育部重点实验室

出　　处： 《硅酸盐学报》 2006年第6期671-674,共4页

摘　　要： 按2(Sr0.99,Eu2+ 0.01)O-0．16B2O3-0．84P2O5配料以固相法合成蓝色荧光粉。该荧光粉在还原性气氛中,分别在1100,1150,1200℃和1250℃下进行焙烧。对不同温度下制成的样品进行X射线衍射分析,确定样品的晶体结构及晶相组成。通过测定样品的激发光谱和发射光谱,研究了焙烧温度对荧光粉结构的影响。结果表明:在1200℃下合成的荧光粉Sr6BP5O20为单一相,属四方晶系,P4/mmm空间群,晶胞参数分别为a=0．9794nm; c=0．9516 nm,对应发射谱中478 nm的发射峰;在低于1200℃下合成的荧光粉中含有α-Sr3(PO4)2和α-Sr2P2O7 2个晶相,对应发射谱中420 nm的发射峰。 Blue phosphors with the formula of 2（Sr0.99. Eu^2＋ 0.01）O-0.16B2O3-0.84P2O5 were synthesized by a solid state reaction method. Phosphors were calcined at 1 100, 1 150, 1200℃ and 1250 ℃ under a reducing atmosphere. Photoluminescence spectra of these phosphors were measured. The effects of calcining temperature on structural variations of the phosphors were investigated. According to X-ray diffraction results, the crystal assembly of the sample calcined at 1200℃ is Sr6BP5O20 with a unitary tetragonal phase in the P4/mmm space group with the cell parameters a and c as 0.979 4 nm and 0.951 6 nm, corresponding to the emission at 478 nm. In the case of phosphors synthesized at temperatures lower than 1200℃, α-Sr3（PO4）2 and α-Sr2P2O7 phases were found with the emission at 420 nm.

关 键 词： 硼磷酸盐 蓝色荧光粉 光致发光

领　　域： [理学] [理学] [一般工业技术]