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Morphological Variations and Structural Properties of ZnO nanostructures Grown by Rapid Thermal CVD

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Various nanostructures of ZnO such as nanowires, sea urchin like and nano needles were grown using rapid thermal chemical vapor deposition technique (RTCVD), in oxygen ambient. For the growth of such structures, oxygen pressure was kept as 0.1 Torr whereas the chamber base pressure was 10−5 Torr. The growth temperature was varied from 600 °C to 850 °C, which resulted in morphological variations. X-ray diffraction measurement revealed the hexagonal wurtzite structure of ZnO preferably oriented in [001] direction, which was further confirmed by high-resolution transmission electron microscopic (HRTEM) observations. X-ray photoelectron spectroscopy (XPS) analysis suggests the presence of Zn 2p and O 1s. Raman E2 high peaks at ∼434 cm−1 has the highest intensity compared to other modes supports XRD results. Presence of low E2 peaks at ∼330 cm−1 indicates defects and oxygen vacancies.


Document Type: Research Article


Publication date: 2011-08-01

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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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