Upconversion luminescence of Y3Al5O12 (YAG):Yb3+, Tm3+ nanocrystals

被引：37

作者：

Liu, M.

Wang, S. W. ^{[1
]}

Zhang, J.

An, L. Q.

Chen, L. D.

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China

[2] Acad Sinica, Grad Sch Sci, Beijing 100039, Peoples R China

来源：

OPTICAL MATERIALS | 2007年 / 30卷 / 03期

关键词：

upconversion luminescence; YAG; Yb3+; Tm3+; nanocrystal;

D O I：

10.1016/j.optmat.2006.11.060

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

YAG:Tm-3 divided by. and YAG:Yb3+, Tm3+ nanocrystals were synthesized by a co-precipitation method using ammonium hydrogen carbonate as precipitator. Pure nanocrystals with a crystallite size of 40 nm were obtained after the precipitates were calcined at 800 degrees C. YAG:Tm3+ and YAG:Yb-3 divided by, Tm-3 divided by powder compacts were excited by 796 and 940 nm, respectively. No upconversion emissions were observed either in YAG:Tm-3 divided by and YAG:Yb-3 divided by, T3+ nanocrystals excited at 796 nm or in YAG:Tm3+ nanocrystals excited at 940 nm. However, the blue emission of YAG:Yb-3 divided by, TM3+ nanocrystals excited by 940 nm was strong enough to be seen by the naked eyes. The emission intensity of this material was also influenced by Yb3+ concentration as well as the calcination temperature. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：370 / 374

页数：5

共 24 条

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