Enhanced photoluminescence of Ce3+ induced by an energy transfer from ZnO nanoparticles encapsulated in SiO2

被引：82

作者：

Ntwaeaborwa, OM

Holloway, PH

机构：

[1] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA

[2] Univ Orange Free State, Dept Phys, ZA-9300 Bloemfontein, South Africa

来源：

NANOTECHNOLOGY | 2005年 / 16卷 / 06期

关键词：

D O I：

10.1088/0957-4484/16/6/042

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

ZnO nanoparticles were synthesized and successfully incorporated in Ce3+-doped SiO2 matrix by a sol-gel method. Photoluminescence intensities were compared for ZnO nanoparticles, Ce3+-doped SiO2 (SiO2:Ce3+) and ZnO encapsulated in SiO2:Ce3+ (ZnO-SiO2:Ce3+) fabricated from sol-gels. Green emission from ZnO associated with anionic oxygen vacancies and blue broadband emission due to 5d(1) -> 4f(1) transitions in Ce3+ ions were observed. The photoluminescence intensity of Ce3+ was enhanced considerably by the energy transfer from ZnO nanoparticles.

引用

页码：865 / 868

页数：4

共 13 条

[1]

BANG J, 2005, UNPUB

[2]

BANG J, 2004, THESIS U FLORIDA

[3]

Blasse G., 1994, LUMINESCENT MAT, DOI [10.1007/978-3-642-79017-1_1, DOI 10.1007/978-3-642-79017-1_1]

[4] Photoluminescence of ZnO nanocrystallites confined in sol-gel silica matrix [J].