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Proceedings Paper

Influence on the luminescence europium complex by localized surface plasmon of silver and gold nanoparticles
Author(s): Feng Song; Qingru Wang; Hongyan Zhao; Jiadong Liu; Chengguo Ming; Chao Zhang; Jianguo Tian; Jingjun Xu; Shangxin Lin; Edwin Y. B. Pun
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Paper Abstract

Many studies on luminescence enhancement by surface plasmons were reported, among which metal nanoparticles were paid many attentions to, because of their special optical properties. The localized surface plasmon resonance can be tuned by changing nanoparticles' size, shape, interparticle spacing, and dielectric environment. They can be used for altering the optical properties of luminescence materials, and are used in the rare earth (RE) ions doped materials. For the RE doped materials, according to the Fermi golden rule, the spontaneous emission rate from excited level |i> to lower level |j> is Γij∝|Μij|2ρ(νij),where Mij is the matrix element related to the two energy levels, ρij is the optical density and is also known as the photon mode density (PMD). In the present work, we experimentally demonstrated the influence of silver and gold metal nanoparticles on the luminescence of Eu complex. These nanoparticles had different sizes and shapes, including the silver spheres, nanoprisms and nanocubes, and gold nanoprisms. Based on the luminescence, lifetime and nanoparticles' absorption measurement, the different luminescence enhancement was obtained. The enhancement of luminescence had a great relationship with the overlap between the nanoparticles' localized surface plasmon resonance bands and the emission or excitation wavelengths. Their influence on the lifetime were also different, which meant the different infuence on the radiative and non-radiative decay rate. We further confirmed that the different influence of these nanoparticles partly came from the variation in the photon mode density (PMD).

Paper Details

Date Published: 5 November 2010
PDF: 10 pages
Proc. SPIE 7848, Holography, Diffractive Optics, and Applications IV, 784803 (5 November 2010); doi: 10.1117/12.870408
Show Author Affiliations
Feng Song, Nankai Univ. (China)
Key Lab. of Weak Light Nonlinear Photonics, Ministry of Education (China)
Qingru Wang, Nankai Univ. (China)
Key Lab. of Weak Light Nonlinear Photonics, Ministry of Education (China)
Hongyan Zhao, Nankai Univ. (China)
Jiadong Liu, Nankai Univ. (China)
Key Lab. of Weak Light Nonlinear Photonics, Ministry of Education (China)
Chengguo Ming, Nankai Univ. (China)
Key Lab. of Weak Light Nonlinear Photonics, Ministry of Education (China)
Chao Zhang, Nankai Univ. (China)
Key Lab. of Weak Light Nonlinear Photonics, Ministry of Education (China)
Jianguo Tian, Nankai Univ. (China)
Key Lab. of Weak Light Nonlinear Photonics, Ministry of Education (China)
Jingjun Xu, Nankai Univ. (China)
Key Lab. of Weak Light Nonlinear Photonics, Ministry of Education (China)
Shangxin Lin, City Univ. of Hong Kong (Hong Kong, China)
Edwin Y. B. Pun, City Univ. of Hong Kong (Hong Kong, China)


Published in SPIE Proceedings Vol. 7848:
Holography, Diffractive Optics, and Applications IV
Yunlong Sheng; Chongxiu Yu; Linsen Chen, Editor(s)

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