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|標題:||Rapid Synthesis of Bundled Tungsten Oxide Nanowires by Microwave Plasma-Enhanced Chemical Vapor Deposition and Their Optical Properties|
|期刊/報告no：:||Journal of the Electrochemical Society, Volume 157, Issue 9, Page(s) K183-K186.|
|摘要:||In recent years, the synthesis of one-dimensional nanomaterials has assumed considerable importance because of the potential applications of these nanomaterials especially in nanodevices. In this study, bundled tungsten oxide (W(18)O(49)) nanowires having diameters of 25-60 nm and lengths of several micrometers were fabricated on Si substrates within 1.5 min by microwave plasma-enhanced chemical vapor deposition (MPECVD). The crystal structure, morphology, and chemical composition of these nanowires were characterized by scanning electron microscopy, X-ray diffraction, transmission electron microscopy, energy-dispersive X-ray spectroscopy, and cathodoluminescence (CL) spectrometry. The growth of the W(18)O(49) nanowires occurred along the  plane. Because no catalysts were used, it was suggested, and then analytically confirmed, that the vapor-solid mechanism was suggested for this growth process; this has been confirmed analytically. An orange emission was observed in the CL spectra, suggesting that the W(18)O(49) nanowires exhibited a redshift, resulting from the presence of significant O deficiencies. In this manner, our overall results demonstrate that MPECVD is a highly effective and suitable method for the fabrication of W(18)O(49) nanowires. (C) 2010 The Electrochemical Society. [DOI:10.1149/1.3459906] All rights reserved.|
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