Nanostructured Metal-Enhanced Photoluminescence of Micro-Sr2Si5N8:Eu2+ Phosphors

被引：2
|
作者：
Liu Ling [1 ]
Xu Xiao-Liang [1 ]
Lei Jie-Mei [1 ]
Yin Nai-Qiang [1 ]
机构：
[1] Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2012年 / 29卷 / 01期
基金：
中国国家自然科学基金;
关键词：
FLUORESCENCE; NANOPARTICLES; EMISSION; NANOCRYSTALS; CONVERSION; FILMS; GOLD;
D O I：
10.1088/0256-307X/29/1/017801
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The enhancement of the photoluminescence of micro-Sr2Si5N8:Eu2+ phosphors on the surface of Ag and Au nanoparticles is studied. Ag nanoparticles cause a considerable enhancement in the photoluminescence intensity of microsized Sr2Si5N8:Eu2+ phosphors. We further investigate the enhanced emission of self-assembled wormlike Au nanoparticles from Sr2Si5N8:Eu2+ phosphors. A brightness photoluminescence intensity enhanced by about six times is observed, and is due to the stronger scattering and higher numbers of hot spots in the Au worms. The luminescence efficiency of the microparticles is higher than the nanoparticles, and it is very difficult to enhance light emission. Therefore, the realization of microphosphor photoluminescence enhancement is a great breakthrough.
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页数：4
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