Effect of Eu3+ codoping on upconversion luminescence in Y2O3:Er3+, Yb3+ nanocrystals

被引：15
|
作者：
Sheng, Y. Q. [1 ]
Liu, J. [1 ]
Xu, L. L. [2 ]
Zhai, D. [1 ]
Zhang, Z. G. [1 ]
Cao, W. W. [3 ]
机构：
[1] Harbin Inst Technol, Dept Phys, Harbin 150080, Peoples R China
[2] Harbin Normal Univ, Dept Phys, Harbin 150080, Peoples R China
[3] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA
来源：
SOLID STATE COMMUNICATIONS | 2010年 / 150卷 / 23-24期
关键词：
Rare earth; UC luminescence; Energy transfer; ENERGY-TRANSFER; MECHANISMS; TB3+;
D O I：
10.1016/j.ssc.2010.03.004
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The influence of Eu3+ on the upconversion (UC) fluorescence of Er3+ in Y2O3:Er3+, Yb3+ nanocrystals was investigated. Room-temperature UC spectra show that the intensity ratio of red to green lights was increased from 8.6 to 19.3 with 1.0 mol% Eu3+ doping. Additionally, with the increase of Eu3+ ion concentration, the n values for both green and red UC emissions in Y2O3:Er3+, Yb3+ nanocrystals become larger. Our analysis shows that the energy transfer between Eu3+ and Er3+ ions is the main cause for the enhancement of H-2(11/2), S-4(3/2) -> F-4(9/2) and I-4(11/2) -> I-4(3/2) transitions of Er3+ ions. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1048 / 1051
页数：4
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