Conversion Process of ZnO Nano-/Micro-Rods into Nano-/Micro-Tubes and Cathodoluminescence Characterization
A simple two-steps method has been successfully developed to synthesize ZnO nanotubes. The alkaline etching process was investigated in detail using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The formation of ZnO nanotube structures was due to the preferential dissolution of the defect-rich top (polar) faces. Cathodoluminescence (CL) was performed on both top and side surfaces of the ZnO tubes. Only the near-band-edge UV emission was observed, implying that the as-grown ZnO nanotubes have a very low concentration of defects. This CL result also provides evidence for explanation of ZnO tubular structure growth.
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Document Type: Short Communication
Publication date: April 1, 2011
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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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