Enhancement of the upconversion photoluminescence intensity in Li+ and Er3+ codoped Y2O3 nanocrystals

被引：108

作者：

Bai, Yunfeng ^{[1
]}

Yang, Kun ^{[1
]}

Wang, Yuxiao ^{[1
]}

Zhang, Xueru ^{[1
]}

Song, Yinglin ^{[1
]}

机构：

[1] Harbin Inst Technol, Dept Phys, Harbin 15001, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2008年 / 281卷 / 10期

关键词：

D O I：

10.1016/j.optcom.2008.01.014

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Infrared-to-visible upconversion luminescence spectra are investigated in Li+ and Er3+ codoped Y2O3 nanocrystals. By introducing Li+ ions, the upconverted emission intensity is found to be greatly enhanced when compared with the nanocrystals with the Li+ absent. The cause of the enhancement is believed to be the modification of the local symmetry of the Er3+ ion, which increases the intra-4f transitions of Er3+ ion, and the homogeneous distribution of Er3+. While in some other Er3+ doped oxides, such as ZnO, ZrO2, etc., the upconversion intensity of Er3+ ions could also be greatly increased by doping Li+. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：2930 / 2932

页数：3

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