Synthesis and characterization of Y2O2S:Eu3+,Mg2+,Ti4+ nanorods via a solvothermal routine

被引：7

作者：

李文宇 ^{[1
]}

刘应亮 ^{[1
]}

艾鹏飞 ^{[1
]}

陈小博 ^{[1
]}

机构：

[1] Department of Chemistry,Jinan University

来源：

JournalofRareEarths | 2009年 / 27卷 / 06期

基金：

中国国家自然科学基金;

关键词：

yttrium oxysulfide; rod-like structure; nanomaterials; luminescence; rare earths;

D O I：

暂无

中图分类号：

TB383.1 [];

学科分类号：

070205 ; 080501 ; 1406 ;

摘要：

Y2O2S:Eu3+,Mg2+,Ti4+ nanorods were prepared by a solvothermal procedure.Rod-like Y(OH)3 was firstly synthesized by hydrothermal method to serve as the precursor.Y2O2S:Eu3+,Mg2+,Ti4+ powders were obtained by calcinating the precursor at CS2 atmosphere.The Y2O2S:Eu3+,Mg2+,Ti4+ phosphor with diameters of 30-50 nm and lengths up to 200-400 nm inherited the rod-like shape from the precursor after calcined at CS2 atmosphere.The Y2O2S:Eu3+,Mg2+,Ti4+ nanorods showed hexagonal pure phase,good dispersion and exhibited bright red luminescence.After irradiation by 265 or 325 nm for 5 min,the phosphor emitted red long-lasting phosphorescence,and the phosphorescence could be seen with the naked eyes in the dark clearly for more than 1 h after the irradiation source was removed.It was considered that the long-lasting phosphorescence was due to the persistent energy transfer from the traps to the Ti4+ and Mg2+ ions to generate the red-emitting long-lasting phosphorescence.

引用

页码：895 / 899

页数：5