期刊
NANOSCALE RESEARCH LETTERS
卷 2, 期 8, 页码 405-409出版社
SPRINGER
DOI: 10.1007/s11671-007-9075-3
关键词
nanostructure; tungsten oxide; nanorod; nanobundle; CVD
Tungsten oxide (WO3) nanorods array prepared using chemical vapor deposition techniques was studied. The influence of oxygen gas concentration on the nanoscale tungsten oxide structure was observed; it was responsible for the stoichiometric and morphology variation from nanoscale particle to nanorods array. Experimental results also indicated that the deposition temperature was highly related to the morphology; the chemical structure, however, was stable. The evolution of the crystalline structure and surface morphology was analyzed by scanning electron microscopy, Raman spectra and X-ray diffraction approaches. The stoichiometric variation was indicated by energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy.
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