无机荧光材料的制备及应用.doc

三 明 学 院 ???? 第六学期学年论文 学生姓名： 雷伙华 学 号： 20100751101 学院、系：资源与化工学学院 专 业： 化 学 论 文 题 目 ： 无机荧光材料的制备及应用 指导教师： 李增富 目录 摘要………………………………………………………………………………1 关键词……………………………………………………………………………1 1.常见的无机荧光材料…………………………………………………………2 1.1硫化物荧光材料铝酸盐荧光材料稀土荧光材料 无机荧光材料的制备及应用 雷伙华 三明学院10级化学专业 福建省三明 365004 摘要: 受到可见光、紫外光、x射线和电子射线等的照射后而发光，其发光在照射后也能维持一定时间的材料称为荧光材料。　荧光材料分无机荧光材料和有机荧光材料。无机荧光材料的优点是吸收能力强，转换率高，且物理化学性质稳定。硫化物荧光材料铝酸盐荧光材料及稀土荧光材料 By ultraviolet, visible light, X-ray and electron beam irradiation of after and shine, and the light in irradiation can also maintain certain time after the material called fluorescent material. Fluorescent material cent inorganic and organic fluorescent material fluorescent material. Among them is the advantage of inorganic fluorescent material absorption ability, high conversion efficiency, and physical and chemical stability. This paper focus on inorganic fluorescent material briefly discusses the methods of preparation and its application in production and life. Content such as: 1. For example introduces the common four kinds of inorganic fluorescent material, respectively is sulfide is fluorescent material, aluminum acid salt is fluorescent material, oxide is fluorescent material and rare earth fluorescent material. 2. The method of preparing inorganic fluorescent material is solid phase method, gas phase method, the liquid phase methods, including liquid phase method is the commonly used method, 3. With the development of science and technology, inorganic fluorescent material in all kinds of security, adornment, paint all have a wide range of applications. 关键词: 无机荧光材料 液相法 防伪 Key words: Inorganic fluorescent material Liquid phase method ﹔anticounterfeit 1. 常见的无机荧光材料 常见的无机荧光材料硫化物荧光材料铝酸盐荧光材料及稀土荧光材料[8211 ] 。二价铕掺杂的CaS 及SrS 可以被蓝光有效激发而发射出红光,因而可用作蓝光L ED 晶片的白光L ED 的红色成分,可制造较低色温的白光L ED ,其显色性明显得到改善,目前使用的红粉硫化物体系主要是(Ca1-X ,SrX ) S : Eu2+ 体系,在蓝区宽带激发,红区宽带发射。通过改变Ca2+ 的掺杂量,可使发射峰在609～647 nm 间移动。共掺杂Er3 +