Abstract
Zinc oxide nanowires were obtained through a vapor transport route at temperatures as low as around 250°C. The diameters of the nanowires are ∼40nm and their lengths reach up to a few microns. The high-resolution transmission electron microscopy showed that ZnO nanowires are of hexagonal wurtzite structures with the [112¯0] growth direction. Raman spectrum reveals that the ZnO nanowires are of high-quality crystal and have an oxygen deficiency. The energy dispersive x-ray spectroscopy result verifies that the nanowires contain a small amount of Bi besides Zn and O. The investigation of the growth mechanism suggests that BiI3 plays a key role on the fabrication of ZnO nanowires around 250°C.
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