Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 112, Issue 4, Pages 990-995Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp077133s
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By using different types of ZnO thin films as seed layers, we systematically investigated the effects of seed layers on the morphologies and growth behaviors of ZnO nanorods by the vapor-phase transport method. It was found that ZnO nanorods can be grown on a variety of polycrystalline ZnO seed layers. The formation of a network wetting layer facilitates the uniform growth of an aligned ZnO nanorod. However, once a continuous ZnO network layer is formed, the alignment will be independent of seed layer thickness and surface roughness. Our results indicate that a ZnO seed layer with a high c-axis orientation, good crystallinity, and less lattice stress leads to the growth of well-aligned ZnO nanorod arrays with uniform diameters and narrow density distributions.
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