Journal
JOURNAL OF CRYSTAL GROWTH
Volume 282, Issue 1-2, Pages 131-136Publisher
ELSEVIER
DOI: 10.1016/j.jcrysgro.2005.04.095
Keywords
high-resolution transmission electron microscopy; optical characterization; ZnO nanorods; vapor-solid mechanism
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The formation of high-density ZnO nanorods has been achieved by a vapor-solid growth mechanism using metallic zinc powder and oxygen gas as source materials for zinc and oxygen, respectively. General morphological studies indicated that the as-grown products are flower-shaped containing several hundreds of nanorods. The obtained nanorods have a diameter of 150-250 nm while their lengths are 5-10 mu m. The detailed structural analysis revealed that the ZnO nanorods exhibit a single crystalline wurtzite hexagonal structure and preferentially oriented in the c-axis direction. Room temperature Raman scattering and photoluminescence studies found that the as-grown ZnO nanorods have good crystal quality with the hexagonal wurtzite phase containing very less structural defects. (c) 2005 Elsevier B.V. All rights reserved.
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