DopingeffectsofNb5+onredlongafterglowphosphorCaTiO3:Pr3+

被引：3

作者：

蒋自强

王育华

龚宇

机构：

[1] DepartmentofMaterialsScience,SchoolofPhysicalScienceandTechnology,LanzhouUniversity

来源：

Chinese Physics B | 2010年 / 19卷 / 02期

关键词：

CaTiO3:Pr3+; red afterglow; trap;

D O I：

暂无

中图分类号：

O482.31 [发光学];

学科分类号：

070205 ; 0805 ; 080502 ; 0809 ;

摘要：

A series of Nb5+ codoped red long afterglow phosphors CaTi1 xNbxO3:Pr03.+002 (0 ≤ x ≤ 0.05) is prepared by a solid state reaction method. Their photoluminescence, phosphorescence and thermoluminescence are investigated. The results indicate that codoping Nb5+ can improve the photoluminescence and phosphorescence property of CaTiO3:Pr3+ significantly. When 3-mol% Nb5+ is codoped, the emission intensity of CaTiO3:Pr3+ is enhanced twice, while the afterglow time is extended from 10 min to about 40 min. Thermoluminescence results reveal that the trapping level of CaTiO3:Pr3+ is reduced from 0.82 eV to 0.62 eV by codoping Nb5+. The effect of Nb5+ doping on enhancing the photoluminescence intensity and afterglow time of CaTiO3:Pr3+ is discussed.

引用

页码：488 / 492

页数：5

共 23 条

[1]

Wang L,Wang Y H,Xu X H. Journal of Applied Physiology . 2008

[2]

Schipper W J,Blasse G. Chemistry of Materials . 1994

[3]

Jia W,Jia D,Rodriguez T,Evans D R,Meltzer R S,Yen W M. Journal of Luminescence . 2006

[4]

Boutinaud P,Pinel E,Dubois M,Vink A P,Mahiou R. Journal of Luminescence . 2005

[5]

Zhang X,Zhang J,Zhan X,Chen L,Lu S,Wang X J. Journal of Luminescence . 2007

[6]

Matsuzawa T. Aoki Y. Takeuchi N. et al. Journal of the Electrochemical Society . 1996

[7]

Tang J,Yu X,Yang L,Zhou C,Peng X. Materials Letters . 2006

[8]

Red luminescence in Pr3+-doped calcium titanates. Diallo P T,Boutinaud P,Mahiou R,et al. Physica Status Solidi . 1997

[9]

Pan,Y.,Su,Q.,Xu,H.,Chen,T.,Ge,W.,Yang,C.,Wu,M. Journal of Solid State Chemistry . 2003

[10]

Chen,R. Journal of Applied Physics . 1969

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