Journal
NANOSCALE
Volume 2, Issue 10, Pages 2199-2202Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0nr00278j
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Funding
- Ministry of Education of Korea
- Korea government (MEST) [2010-0000797]
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We report a simple wet-chemical synthesis of similar to 5 nm diameter ZnO nanorod arrays at room temperature (20 degrees 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 degrees 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.
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