Enhancement of photoluminescence in CaTiO3:Pr3+ by Ba and Sr substitution for Ca

被引：54
|
作者：
Wang, XS
Xu, CN
Yamada, H
机构：
[1] Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama 3320012, Japan
[2] Natl Inst Adv Ind Sci & Technol, Tosu, Saga 8410052, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 2005年 / 44卷 / 28-32期
关键词：
photoluminescence; CaTiO3; substitution; rare earth; doping;
D O I：
10.1143/JJAP.44.L912
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Photoluminescence properties were improved in CaTiO3:Pr3+ phosphor by substitution of Ba and Sr for Ca to a large extent of Ba (0-20%) and Sr (0-45%) fractions. Red emission intensity at 612 nm was greatly enhanced. It achieved its largest value in Ca0.7Sr0.3TiO3:Pr3+ sample, higher by 192% than CaTiO3:Pr3+. Enhancement of red emission in Ba and Sr added CaTiO3:Pr3+ is inferred to originate from improvement of Pr-3+ 4f5d capture probability to electrons in the host conduction band and charge transfer state, which are lowered by Ba and Sr addition.
引用
收藏
页码：L912 / L914
页数：3
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