Plasmonic enhanced upconversion luminescence of β-NaYF4: Yb3+/Er3+ with Ag@SiO2 core-shell nanoparticles

被引：35
|
作者：
Ding, Yanli [1 ,2 ]
Zhang, Xiaodan [1 ]
Gao, Haibo [1 ]
Xu, Shengzhi [1 ]
Wei, Changchun [1 ]
Zhao, Ying [1 ]
机构：
[1] Nankai Univ, Inst Photoelect Thin Film Devices & Technol, Tianjin 300071, Peoples R China
[2] Shangqiu Normal Univ, Dept Phys & Informat Engn, Shangqiu 476000, Peoples R China
来源：
JOURNAL OF LUMINESCENCE | 2014年 / 147卷
关键词：
Up-conversion; NaYF4:Yb3+/Er3+; Silica shell thickness; Ag@SiO2 NPs; Plasmonic enhancement; FLUORESCENCE;
D O I：
10.1016/j.jlumin.2013.10.062
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Ag@SiO2 nanoparticles (NPs) are proposed and synthesized to enhance beta-NaYE4:Yb3+/Er3+ luminescence by mixing with beta-NaYF4:Yb3+/Er3+ in the solution. Luminescence enhancements are found to be dependent on the amount of addition and the silica shell thickness of the Ag@SiO2 NPs. For the same silica shell thickness of Ag@SiO2 NPs, the optimum mass ratio of Ag@SiO2/microcrystals for the enhancement is 1:21500. For different silica shell thickness of Ag@SiO2 NPs, the maximum luminescence enhancement occurs at the silica shell thickness of 8 nm under the condition of optimal mass, an overall enhancement factor of 3.5 fold is obtained. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：72 / 76
页数：5
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