Synthesis and Luminescent Properties of Y_3Al_5O12∶Eu3+
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摘要：
采用溶胶-凝胶法制备Eu3+掺杂Y_3Al_5O12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_5O12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,Eu3+更均匀的置换Y3+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.
作者:
孙凌云 王显威 尚军 胡鹏 王小二
机构地区:
betway官方app 物理与材料科学学院 焦作大学化工与环境工程学院
出处:
《betway官方app 学报：自然科学版》 CAS 北大核心 2017年第3期84-90,共7页
基金:
国家自然科学基金(51402091 11304082 11404102 51601059) betway官方app 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
关键词:
Y3Al5O12:Eu3+ 溶胶-凝胶法 二次煅烧 荧光性能
Y3 Al5 O12 ： Eu3＋ sol-gel method secondary calcination treatment luminescence properties
分类号:
O482.31 [理学—固体物理]
