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Patterned Fabrication of Single ZnO Nanorods and Measurement of Their Optoelectrical Characteristics

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This work develops a new process of growing well ordered ZnO nanorods in large scale on the Si(111) substrate. Nanosphere lithography (NSL) was adopted to produce a matrix in an extensive area. A pattern with a controlled amount of gold was formed through the nanosphere mask. The ZnO nanorods were then grown on a patterned Au/Si substrate through a metal catalytic vapor-liquid-solid (VLS) process. The structure and characteristics of ZnO nanorods were investigated by XRD, SEM and TEM. The hexagonal nanorods were dominated at (0002) direction with a lattice constant of ∼5.03 Å. The optoelectronical properties were studied by PL emission spectroscopy. A strong UV emission at 380 nm was observed. The band gap of the single ZnO nanorod was directly measured to be 3.36 eV using a conductive AFM. The superiority of patterned ZnO nanorods indicates their great potential in field emission display arrays.
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Document Type: Research Article

Publication date: 2008-09-01

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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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