Spectral shape of one-photon luminescence from single gold nanorods

被引：8
作者：
Wen, Te [1 ,2 ]
He, Yingbo [1 ,2 ]
Liu, Xue-Lu [3 ]
Lin, Miao-Ling [3 ]
Cheng, Yuqing [1 ,2 ]
Zhao, Jingyi [1 ,2 ]
Gong, Qihuang [1 ,2 ,4 ]
Xia, Keyu [5 ]
Tan, Ping-Heng [3 ]
Lu, Guowei [1 ,2 ,4 ]
机构：
[1] Peking Univ, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China
[2] Peking Univ, Collaborat Innovat Ctr Quantum Matter, Dept Phys, Beijing 100871, Peoples R China
[3] Chinese Acad Sci, State Key Lab Superlattices & Microstruct, Inst Semicond, Beijing 100083, Peoples R China
[4] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Shanxi, Peoples R China
[5] Nanjing Univ, Coll Engn & Appl Sci, Nanjing 210008, Jiangsu, Peoples R China
来源：
AIP ADVANCES | 2017年 / 7卷 / 12期
基金：
中国国家自然科学基金;
关键词：
PHOTOLUMINESCENCE; LIGHT; SCATTERING; METALS; NANOPARTICLE; ENHANCEMENT; EXCITATION; EMISSION; LASER; AU;
D O I：
10.1063/1.5008544
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Light emission from gold nanoparticles was investigated with ultra-narrow-band notch filters to obtain the complete spectral shape. The anti-Stokes emission band was observed at all excitation wavelengths. The spectral shape of the anti-Stokes emission could be well fitted by a Fermi-Dirac-like line shape, while the spectral profile of the Stokes emission could be fitted by a Lorentzian line shape. The electron distribution and local surface plasmon resonance jointly determined the spectral shape. Additionally, we found that the anti-Stokes emission intensity increased more rapidly compared with that of the Stokes emission as illumination power was increased. This phenomenon can be understood from the temperature dependence of the electron distribution owing to photothermal effects. (c) 2017 Author(s).
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页数：6
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