The Effect of the Texture and the Density of ZnO Seed Layer on the Orientation of ZnO Nanorod Arrays

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The effect of the texture and the density of ZnO seed layer on the orientation of ZnO nanorod arrays (ZNAs) was systematically investigated, and the vertical growth mechanism of ZNAs during hydrothermal deposition was also explained. It is demonstrated that the textured ZnO seed layer determines the orientation of ZNAs which grow on it. The interaction among nanorods, which derives from the high crystal seed density and the incomplete c-axis texture of ZnO seed layer, obviously reinforces the c-axis texture of ZNAs. According to the seed density behavior of ZnO seed layer, the dominate factor which influences the orientation of ZNAs has been studied. And the results classify the growth situations into three categories: the high density seed layer initiated growth, the middle density seed layer initiated growth and the sparsely separated seeds initiated growth. We also establish the correlation between the density and the orientation of ZNAs, this quasi-quantitative correlation can be used to fabricate the ZNAs with suitable density and orientation.


Document Type: Research Article


Publication date: October 1, 2009

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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