Green phosphorescence of CaAl2O4:Tb3+,Ce3+ through persistence energy transfer

被引：209

作者：

Jia, D ^{[1
]}

Meltzer, RS

Yen, WM

Jia, W

Wang, X

机构：

[1] Univ Georgia, Dept Phys & Astron, Athens, GA 30602 USA

[2] Univ Puerto Rico, Dept Phys, Mayaguez, PR 00681 USA

[3] Georgia So Univ, Dept Phys, Statesboro, GA 30460 USA

来源：

APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 09期

关键词：

D O I：

10.1063/1.1456955

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Single-crystal CaAl2O4 fibers doped with Ce3+ or Tb3+ or double doped with Tb3+ and Ce3+ were prepared by the laser-heated pedestal-growth method. Ce3+-doped CaAl2O4 was found to have persistent phosphorescence in the blue violet lasting more than 10 h, while Tb3+-doped CaAl2O4 showed only a weak afterglow. However, long persistent green phosphorescence from Tb3+ was observed in the doubly doped fiber, CaAl2O4:Tb3+,Ce3+. It was found that the enhanced green phosphorescence from Tb3+ is due to persistence energy transfer from the thermally released electrons to Ce3+ followed by energy transfer to Tb3+. The finding suggests a promising approach for controlling the color of persistent phosphors. (C) 2002 American Institute of Physics.

引用

页码：1535 / 1537

页数：3

共 15 条

[1] Ce3+ or Tb3+-doped phosphate and silicate scintillating glasses [J].