均相沉淀-燃烧法合成单分散球形SiO_2/CaMoO_4:Eu^(3+),Li^+红色荧光粉的发光性能  

Spherical SiO_2/CaMoO_4:Eu^(3+),Li^+ Red Phosphor Synthsized via Homogeneous Precipitation and Combustion Method and Its Luminescence Properties

作　　者：王夏[1] 韦万[1] 梁振华[1] 彭桂花[1] 韩小宝[1] 

机构地区：[1]广西师范大学化学化工学院,药用资源化学与药物分子工程教育部重点实验室,广西桂林541004

出　　处：《硅酸盐学报》2013年第5期701-704,共4页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(50962003;51102053)资助项目

摘　　要：采用均相沉淀和燃烧合成相结合的方法合成了单分散球形核壳结构SiO2/CaMoO4:Eu3+,Li+荧光粉。用X射线衍射仪、扫描电子显微镜、透射电子显微镜和荧光光谱对样品的物相、结构、显微形貌和发光性能进行了表征。结果表明:产品物相由四方晶系CaMoO4和非晶态SiO2组成;CaMoO4:Eu3+,Li+荧光粉微粒在球形SiO2表面结晶良好,所形成的核壳结构微球粒径均匀;该荧光粉能在近紫外光(395nm)激发下,发出波长为617nm的红光。The spherical core-shell structured SiO2/CaMoO4：Eu3＋,Li＋ phosphors were prepared by a combined approach of homogeneous precipitation and combustion synthesis. The structure, morphology and luminescence properties of the SiO2/CaMoO4：Eu^3＋,Li^＋ phosphors were characterized by powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy and photoluminescence, respectively. The results show that the products are composed of tetragonal phase CaMoO4 and amorphous SiO2, the CaMoO4：Eu3＋,Li＋ particles are well-crystallized on the SiO2 spheres, and the obtained microspheres with the uniform size distribution have a core-shell structure. The SiO2/CaMoO4：Eu^3＋ microspheres exhibited an intensive red emission of 617 nm under near ultraviolet （395 nm） excitation.

关 键 词：二氧化硅微球 钼酸钙荧光粉 均相沉淀 燃烧合成 单分散 

分 类 号：O614[理学—无机化学]