Authors: Huizhao Zhuang Jie Wang Junlin Li Peng Xu Feng Shi
Publish Date: 2010/09/14
Volume: 22, Issue: 7, Pages: 765-770
Abstract
Wellcrystallized ZnO nanowires have been successfully synthesized on NiCl2coated Si substrates via a carbon thermal reduction deposition process The predeposited Ni nanoparticles by dipping the substrates into NiCl2 solution can promote the formation of ZnO nuclei The assynthesized nanowires were characterized by Xray diffraction XRD scanning electron microscopy SEM transmission electron microscopy TEM highresolution transmission electron microscopy HRTEM Xray photoelectron spectroscopy XPS and photoluminescence PL spectrum The results demonstrate that the asfabricated nanowires with about 60 nm in diameter and several tens of micrometers in length are preferentially arranged along 0001 direction with 0002 as the dominate surface Room temperature PL spectrum illustrates that the ZnO nanowires exist a UV emission peak and a green emission peak and the peak centers locate at 387 and 510 nm Finally the growth mechanism of the nanowires is briefly discussed
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