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Issue 10, 2010
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Room temperature synthesis and optical properties of small diameter (5 nm) ZnOnanorod arrays

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Abstract

We report a simple wet-chemical synthesis of ∼5 nm diameter ZnO nanorod arrays at room temperature (20 °C) and normal atmospheric pressure (1 atm) and their optical properties. They were single crystalline in nature, and grew in the [001] direction. These small diameter ZnO nanorod arrays can also be synthesized at 0 °C. Control experiments were also conducted. On the basis of the results, we propose a mechanism for the spontaneous growth of the small diameter ZnO structures. The optical properties of the 5 nm diameter ZnO nanorod arrays synthesized using this method were probed by UV-Visible diffuse reflectance spectroscopy. A clear blue-shift, relative to the absorption band from 50 nm diameter ZnO nanorod arrays, was attributed to the quantum confinement effects caused by the small nanocrystal size in the 5 nm diameter ZnO nanorods.

Graphical abstract: Room temperature synthesis and optical properties of small diameter (5 nm) ZnO nanorod arrays

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Supplementary files

Article information


Submitted
26 Apr 2010
Accepted
16 Jun 2010
First published
10 Aug 2010

Nanoscale, 2010,2, 2199-2202
Article type
Paper

Room temperature synthesis and optical properties of small diameter (5 nm) ZnO nanorod arrays

S. Cho, J. Jang, J. S. Lee and K. Lee, Nanoscale, 2010, 2, 2199
DOI: 10.1039/C0NR00278J

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