Doping effects of Nb5+ on red long afterglow phosphor CaTiO3:Pr3+

被引：3

作者：

蒋自强 ^{[1
]}

王育华 ^{[1
]}

龚宇 ^{[1
]}

机构：

[1] Department of Materials Science,School of Physical Science and Technology,Lanzhou University

来源：

Chinese Physics B | 2010年 / 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

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