YAG∶Eu的晶体结构与发光特性  

Structure and Luminescent Properties of YAG∶Eu

作　　者：郭忠亮[1] 战超世[1] 李蒙蒙[1] 龙云泽[1] 袁峰[1] 徐胜[1] 

机构地区：[1]青岛大学物理科学学院,山东青岛266071

出　　处：《材料科学与工程学报》2009年第3期430-433,共4页Journal of Materials Science and Engineering

摘　　要：利用凝胶-燃烧法制备出单相的(Y1-xEux)3Al5O12(x=0.0～0.1)粉体。X射线衍射试验表明所有样品均呈单相立方晶系结构(Ia3d),通过对其晶体结构解析发现随着Eu3+掺杂浓度的增加YAG∶Eu晶格常数有增大的趋势,但在x=0.07附近出现晶格坍塌。与此同时,对其发光特性的测试表明,除x=0.10时出现浓度猝灭外,其他掺杂浓度样品的发光强度与晶格常数的变化趋势一致。从材料晶体结构变化的角度讨论了对其发光性能的影响。Polycrystalline powders of （Y1-x Eux）3Al5O12 （x = 0.0-0.1） were synthesizedby gel-combustion method. X-ray diffraction reveals that all the samples crystallize in a single phase of cubic （Ia3d）. With increasing of x, the lattice parameters increase. The crystal lattice collapses when x = 0.07. In addition to x = 0.10 which appear the concentration quenching, the structures and the luminous properties of other samples change in similar trend. The relationship between the structure and luminous properties is discussed.

关 键 词：凝胶-燃烧法 YAG∶Eu 发光 粉末结构解析 

分 类 号：O611.4[理学—无机化学]