Effect of lithium ion addition on afterglow time of green-emitting Ce3+ and Pr3+ codoped CaS phosphor by black light irradiation

被引：30

作者：

Kojima, Y ^{[1
]}

Aoyagi, K ^{[1
]}

Yasue, T ^{[1
]}

机构：

[1] Nihon Univ, Fac Sci & Engn, Dept Mat & Appl Chem, Chiyoda Ku, Tokyo 1018308, Japan

来源：

JOURNAL OF LUMINESCENCE | 2005年 / 115卷 / 1-2期

关键词：

Li ion; afterglow; black light; decay curve;

D O I：

10.1016/j.jlumin.2005.01.011

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This paper reports the effect of lithium ion addition on the afterglow time of green-emitting Ce3+ and Pr3+ codoped CaS phosphor by black light irradiation. CaS:Ce Pr, irradiated with black light, emitted in the green region and showed afterglow. The afterglow time of CaS:Ce3+ Pr3+ was relatively short (about 10 min). When a Li+ invades the free space in a CaS crystal lattice, new cation vacancy is formed for the charge compensation in the Ca2+ site. The afterglow intensity of CaS:Ce3+, Pr3+, with Li+ incorporated in the host, increased to three times that of the original sample (CaS:Ce3+, Pr3+). The afterglow time of CaS:Ce3+, Pr, with Li+ incorporated was extended to 40min. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：13 / 18

页数：6

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