Surface enhanced Raman scattering effect of CdSe/ZnS quantum dots hybridized with Au nanowire

被引：19
|
作者：
Lee, Yong-Baek [1 ]
Lee, Seok Ho [1 ]
Lee, Sunmi [1 ]
Lee, Hyunsoo [2 ]
Kim, Jeongyong [2 ]
Joo, Jinsoo [1 ]
机构：
[1] Korea Univ, Dept Phys, Seoul 136713, South Korea
[2] Univ Incheon, Dept Phys, Inchon 406772, South Korea
来源：
APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 03期
基金：
新加坡国家研究基金会;
关键词：
PLASMONIC PROPERTIES; SILVER ELECTRODE; NANOCRYSTALS; NANOSTRUCTURES; GOLD; ELECTROLUMINESCENCE; NANOPARTICLES; SPECTROSCOPY; RESONANCE; SPECTRUM;
D O I：
10.1063/1.4788926
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Functionalized CdSe/ZnS quantum dots (QDs) were attached to the surface of Au nanowire (NW). Analysis of optical absorption spectra disclosed surface plasmon bands of Au NWs at 562 and 627 nm and showing an overlap with the QD absorption band. Micro Raman spectra (lambda(ex) = 514 nm) of the QDs/Au single NW exhibited surface enhanced Raman scattering (SERS) peaks at 180, 205, and 277 cm(-1), corresponding to surface, longitudinal, and transverse optical phonon modes, respectively. From time-resolved fluorescence spectra, the exciton lifetime of QDs decreased after hybridization with Au NW due to the energy transfer, supporting the SERS effect. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4788926]
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页数：4
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