Journal
SOLID STATE COMMUNICATIONS
Volume 137, Issue 4, Pages 177-181Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ssc.2005.11.026
Keywords
nanowires nanobelts; nanosheets; nanograsses; semiconductor gallium oxide; microwave plasma
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In this study, beta-gallium oxide beta-Ga2O3) nanowires, nanobelts, nanosheets, and nanograsses were synthesized through microwave plasma of liquid phase gallium containing H2O in Ar atmosphere using silicon as the substrate. The nanowires with diameters of about 20-30 nm were several tens of microns long and the nanobelts with thickness of about 20-30 nm were tens to hundreds of microns long. The morphology and structure of products were analyzed by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM) and X-ray diffraction (XRD). These results showed that multiple nucleation and growth of beta-Ga2O3 nanostructures could easily occur directly out of liquid gallium exposed to appropriate H2O and Ar in the gas phase. The growth process of beta-Ga2O3 nanostructures may be dominated by VS (vapor-solid) mechanism. (c) 2005 Elsevier Ltd. All fights reserved.
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