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Nanoscaled ZnO films used as enhanced substrates for fluorescence detection of dyes |
| Liu Yan-Song(刘艳松)a)†, Yi Fub), Ramachandram Badugub), Joseph R. Lakowiczb), and Xu Xiao-Liang(许小亮)a) |
a. Department of Physics, University of Science and Technology of China, Hefei 230026, China;
b. Center for Fluorescence Spectroscopy, University of Maryland School of Medicine, 725 West Lombard Street, Baltimore, Maryland 21021, USA |
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Abstract The ability of nanoscaled ZnO films to enhance fluorescence was studied. We found that the fluorescence intensities of Cy5, rhodamine 6G, and fluorescein can be enhanced about 10-fold on nanoscaled ZnO films as compared to that on glass substrates. The lifetimes of all samples were measured, and no obvious change in lifetime was observed for dyes on different substrates. The mechanism for the nanoscaled ZnO film enhanced fluorescence appears to be different from that for the metal-fluorophore systems.
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Received: 07 October 2011
Revised: 10 November 2011
Accepted manuscript online:
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PACS:
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78.47.jd
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(Time resolved luminescence)
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78.66.Hf
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(II-VI semiconductors)
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78.90.+t
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(Other topics in optical properties, condensed matter spectroscopy and other interactions of particles and radiation with condensed matter)
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| Fund: Project supported by the National Institutes of Health of USA (Grant Nos. HG002655, HG005090, and EB006521) and the National Natural Science Foundation of China (Grant No. 50872129). |
Corresponding Authors:
Liu Yan-Song,lysong@mail.ustc.edu.cn
E-mail: lysong@mail.ustc.edu.cn
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Cite this article:
Liu Yan-Song(刘艳松), Yi Fu, Ramachandram Badugu, Joseph R. Lakowicz, and Xu Xiao-Liang(许小亮) Nanoscaled ZnO films used as enhanced substrates for fluorescence detection of dyes 2012 Chin. Phys. B 21 037803
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