Synthesis and upconversion properties of monoclinic Gd2O3:Er 3+ nanocrystals

被引：54

作者：

Xu, Lingling ^{[1
]}

Yu, Yingning ^{[2
]}

Li, Xiaoguang ^{[1
]}

Somesfalean, Gabriel ^{[1
]}

Zhang, Yungang ^{[1
]}

Gao, Hong ^{[3
]}

Zhang, Zhiguo ^{[1
]}

机构：

[1] Harbin Inst Technol, Dept Phys, CCMST, Harbin 150080, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Changchun Inst Appl Chem, Lab Rare Earth Chem & Phys, Changchun 130022, Peoples R China

[3] Harbin Normal Univ, Dept Phys, Harbin 150080, Peoples R China

来源：

OPTICAL MATERIALS | 2008年 / 30卷 / 08期

关键词：

Gd2O3 : Er3+; combustion synthesis; luminescence; upconversion; monoclinic phase;

D O I：

10.1016/j.optmat.2007.06.007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Monoclinic phase Gd2O3:Er3+ nanophosphors were synthesized by the glycine-nitrate process (GNP). Green, red and blue/ultraviolet (UV) radiations were observed by 980 nm diode laser excitation. Obvious enhancement of the red and blue/UV emissions from the F-4(9/2), H-2(9/2) and (4)G(11/2) levels were observed with increasing Er3+ ions doping concentration. Power dependence study revealed that two and three photons processes are involved in the upconversion process. Emissions excited by an Ar+ laser verified the analysis of the upconversion mechanism and indicated that the phonon assisted energy transfer process 4I(11/2) +4I(11/2) - F-4(9/2) + 4I(3/2) becomes prominent and greatly enhances both the red and blue/UV upconversions with increasing Er3+ ion doping. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：1284 / 1288

页数：5

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