二次煅烧制备铕掺杂钇铝石榴石粉体及其荧光性能  

Synthesis and Luminescent Properties of Y_3Al_5O_(12)∶Eu^(3+)

作　　者：孙凌云[1] 王显威[1] 尚军[1] 胡鹏[1,2] 王小二[1] 

机构地区：[1]河南师范大学物理与材料科学学院,河南新乡453007 [2]焦作大学化工与环境工程学院,河南焦作454000

出　　处：《河南师范大学学报（自然科学版）》2017年第3期84-90,共7页Journal of Henan Normal University(Natural Science Edition)

基　　金：国家自然科学基金(51402091;11304082;11404102;51601059);河南师范大学博士科研启动经费(5101029170290);河南省前沿物理与清洁能源材料特色学科群资助项目

摘　　要：采用溶胶-凝胶法制备Eu^(3+)掺杂Y_3Al_5O_(12)的红色荧光粉,以不同的温度煅烧发现,在700℃煅烧的样品为非晶,已开始出现荧光性能,到1000℃时出现Y_3Al_5O_(12)纯相,随着煅烧温度的升高,样品的结晶度变好,晶粒长大,荧光强度增强,但温度达到1300℃时,样品的荧光强度稍有下降.对1000℃煅烧所得的样品进行低温二次煅烧处理表明,处理后的样品的物相和形貌无明显变化,但晶粒排列更有序,Eu^(3+)更均匀的置换Y^(3+)格点位置,同时也减少了表面缺陷,使荧光性能有明显增强.Eu3＋ doped Y3 A15012（YAG） red phosphors were prepared via a simple sol-gel method calcinated at different temperature. The result shows that the sample calcined at 700 °C is amorphous, and the sample has begun to appear fluorescent properties. Y3A15012 pure phase was detected in samples calcined at 1000 ° C . With the increase of calcination temperature, grain size becomes larger, and the crystallinity and the fluorescence intensity of the sample become better, while the fluores-cence intensity of the samples decreased slightly for samples calcined at 1300 °C. The phase composition of the sample treated by secondary calcination have no significant changes, but the grain arrangement more orderly, Eu3＋ more homogeneous permu-tation Y3＋ point location, also reduced the surface defects, that makes the fluorescence performance enhanced significantly.

关 键 词：Y3Al5O12:Eu3+ 溶胶-凝胶法 二次煅烧 荧光性能 

分 类 号：O482.31[理学—固体物理]