Current Nanoscience

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Synthesis and Characterization of Silicon Oxide Nanoflowers

Author(s): C. W. Zhou, K. F. Cai, J. L. Yin.

Abstract:

Flower-like amorphous silicon oxide nanostructures were synthesized by a metal-catalyzed chemical vapor deposition method on Si (111) wafers, using SiCl4 as the source of Si and Au as catalyst in a flowing H2-5% Ar atmosphere. The nanostructures were characterized using field-emission scanning electron microscopy, transmission electron microscopy equipped with electron energy dispersive X-ray spectroscopy. Each flower-like nanostructure consists of many silicon oxide nanorods with smooth surface and uniform diameter. At early stage, the growth of the flower-like silicon oxide nanostructures was controlled by solid-liquid-solid and solid-vapor-liquid-solid mechanisms, and solid-vapor-liquid-solid and vapor-liquid-solid mechanisms at later stage. The silicon oxide nanoflowers show a photoluminescence emission band at 339 nm, revealing that the nanoflowers might have potential applications in the future optoelectronic device.

Keywords: Chemical vapor deposition, nanorod, silicon oxide, photoluminescence, vapor-liquid-solid, nanowire, nanostructures, silicon, SiCl4, solid-vapor-liquid-solid, catalyst, growth, mechanism, characterization

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Article Details

VOLUME: 7
ISSUE: 4
Year: 2011
Page: [598 - 602]
Pages: 5
DOI: 10.2174/157341311796196763
Price: $58