Article ID Journal Published Year Pages File Type
1787974 Current Applied Physics 2006 4 Pages PDF
Abstract

GaN nanowires were grown on gold-coated sapphire substrates by pulsed laser ablation of a target of GaN powder in low-pressure nitrogen gas. The laser ablation induced Ga and N plasma directly towards the substrate to initialize the vapor–liquid–solid (VLS) growth mechanism. The morphological and structural properties of the GaN nanowires were studied using scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The nanowires formed crystalline and have lengths from 300 to 500 nm with diameters of around 50 nm. The tips of the nanowires were observed to be more conducting which further confirmed the VLS growth mechanism. In addition, the electrical properties of these nanowires were also examined.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Condensed Matter Physics
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