Growth of In-Catalyzed Silicon Nanostructures by Hydrogen Radical-Assisted Deposition Method: Effect of Substrate Temperatures

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Abstract:

Indium (In) catalyzed silicon nanowires were synthesized by the hydrogen radical-assisted deposition method. The In nanoparticles used as catalyst were fabricated from indium oxide film as metal oxide film at various temperatures by hydrogen radical treatment. The sizes of spherical structure were decreased with increasing hydrogen radical treatment temperatures. Moreover, the quantity of smaller nanoparticles was increased. Subsequently, large quantities of Si nanostructures with various crystal diffractions were synthesized on these substrates. The Si nanostructures were observed to be root-like, worm-like and tapered with increasing synthesis temperatures. These results demonstrate that the shapes of Si nanostructure strongly depend on the hydrogen radical treatment temperatures and the growth temperatures. Furthermore, the hydrogen radical treatment for fabricating catalyst nanoparticles and the subsequent deposition method for synthesizing Si nanostructures at various temperatures were proposed and discussed.

Keywords: HYDROGEN RADICAL; INDIUM CATALYST; NANOPARTICLES; SILICON NANOWIRES

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2008.1005

Publication date: October 1, 2008

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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