Issue 17, 2008
From the journal:

Journal of Materials Chemistry

A simple solvothermal route to controlled diameter germanium nanowires

Baomei Wen,a   Yizhong Huangb  and  John J. Boland*a  

* Corresponding authors

a School of Chemistry and Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin 2, Ireland

b Department of Materials, University of Oxford, Parks Road, United Kingdom

Abstract

A simple solvothermal method has been developed to synthesize germanium nanowires with excellent single crystalline diamond cubic structure that exploits the use of preformed Au nanoparticle seeds on high surface area alumina powders. The nanowires exhibit a narrow diameter distribution, with typical diameters of 40 ± 7 nm and 80 ± 5 nm, using 40 nm and 80 nm Au seeds, respectively. The preferred growth direction of the Ge nanowires is along the [111] direction. The use of high surface area alumina powder, modified by 3-aminopropyltriethoxysilane (APTES), provides an effective way to capture individual nanoparticle seeds, which prevents aggregation and provides monodispersed seeds for nanowire growth. This approach is a viable alternative to higher temperature vapor-phase methods, yielding materials of comparable quality and improved size control and thus represents a low cost route to controlled germanium nanowires.

Graphical abstract: A simple solvothermal route to controlled diameter germanium nanowires

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Article information

DOI
https://doi.org/10.1039/B719481A
Article type
Paper
Submitted
18 Dec 2007
Accepted
12 Feb 2008
First published
04 Mar 2008

J. Mater. Chem., 2008,18, 2011-2015

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A simple solvothermal route to controlled diameter germanium nanowires

B. Wen, Y. Huang and J. J. Boland, J. Mater. Chem., 2008, 18, 2011 DOI: 10.1039/B719481A

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