Abstract
Bismuth oxide (Bi 2O 3) nanowires have been synthesized on Au-coated Si substrates by atmospheric pressure chemical vapor deposition (APCVD) approach using Bi(S 2CNEt 2) 3 as a precursor in the presence of oxygen. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) show that the Bi 2O 3 nanowires have a diameter in the range of 50–100 nm and a length of up to tens of microns. X-ray diffraction (XRD), energy-dispersive spectroscopy (EDS), high-resolution TEM and selected-area electron diffraction (SAED) demonstrate that the nanowires are composed of pure tetragonal phase β-Bi 2O 3 single crystal. The growth of the Bi 2O 3 nanowires could refer to a vapor–liquid–solid (VLS) mechanism.
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