Preparation and luminescent properties of hollow Y2O3:Tb3+ microspheres

被引：12

作者：

Jiu, Hongfang ^{[1
]}

Fu, Yuehua ^{[1
]}

Zhang, Lixin ^{[2
]}

Sun, Yixin ^{[2
]}

Wang, Yuanzhong ^{[2
]}

Han, Tao ^{[3
]}

机构：

[1] N Univ China, Coll Sci, Taiyuan 030051, Peoples R China

[2] N Univ China, Chem Engn & Environm Inst, Taiyuan 030051, Peoples R China

[3] N Univ China, Coll Mat Sci & Engn, Taiyuan 030051, Peoples R China

来源：

MICRO & NANO LETTERS | 2012年 / 7卷 / 09期

关键词：

TEMPLATE-FREE SYNTHESIS; PARTICLES; SPHERES; SHELL; RED; PHOTOLUMINESCENCE; PHOSPHORS; ROUTE; GREEN; BLUE;

D O I：

10.1049/mnl.2012.0331

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Y2O3:Tb3+ hollow microspheres have been successfully prepared on a large scale with polystyrene microspheres as templates followed by subsequent calcination. All X-ray diffraction peaks can be indexed to the pure cubic phase of Y2O3. Transmission electron microscopy and scanning electron microscopy images indicate that the average size of the hollow spheres is ca. 1.3 mm and the thickness of the shells is ca. 50 nm. The microspheres show a strong green emission corresponding to the D-5(4)-F-7(5) transition of Tb3+ under ultraviolet excitation. The optimum Tb3+ concentration was 3 mol% to obtain the highest photoluminescence intensity. This study indicates that a calcining temperature of 800 degrees C is needed for high luminescence efficiency.

引用

页码：947 / 950

页数：4

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