Influence of excitation wavelength on photoluminescence properties of CdSe/CdZnS colloidal quantum dots on micro-patterned silver films

被引:0
作者
Rizwan Khan
Ju-Won Jeon
Lee-Woon Jang
Min-Kyu Kim
Eun-Yee Ko
Joo-In Lee
In-Hwan Lee
机构
[1] Chonbuk National University,School of Advanced Materials Engineering and Research Center for Advanced Materials Development
[2] Korea Research Institute of Standards and Science,Center for Nano
来源
Electronic Materials Letters | 2014年 / 10卷
关键词
colloidal quantum dot; CdSe/CdZnS; silver film; photoluminescence; surface plasmon;
D O I
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中图分类号
学科分类号
摘要
We examined the excitation wavelength dependence of photoluminescence (PL) property in CdSe/CdZnS colloidal quantum dots (QDs) on micro-patterned silver (Ag) films (MPSFs). PL quenching of the fluorophore was observed when the excitation wavelength was out of the absorption range of MPSF substrates. In contrast, when the excitation wavelength was within the absorption spectrum range, the PL intensity on Ag films was markedly enhanced by a factor of two. It was expected that the principal causes on the PL properties of the fluorophore on Ag films would be the energy match between the incident light and the surface plasmon of Ag metal films.
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页码:451 / 455
页数:4
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