Abstract
Well-crystallized ZnO nanowires have been successfully synthesized on NiCl2-coated Si substrates via a carbon thermal reduction deposition process. The pre-deposited Ni nanoparticles by dipping the substrates into NiCl2 solution can promote the formation of ZnO nuclei. The as-synthesized nanowires were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS) and photoluminescence (PL) spectrum. The results demonstrate that the as-fabricated 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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This project was supported by the Key Research Program of the National Natural Science Foundation of China (No. 90301002).
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Zhuang, H., Wang, J., Li, J. et al. Synthesis, characterization and growth mechanism of ZnO nanowires on NiCl2-coated Si substrates. J Mater Sci: Mater Electron 22, 765–770 (2011). https://doi.org/10.1007/s10854-010-0208-6
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DOI: https://doi.org/10.1007/s10854-010-0208-6