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.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2009年第3期430-433,共4页
Journal of Materials Science and Engineering
