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Effects of substrates and catalysts compositions on the crystalline quality of InP Nanowires grown on SrTiO3 (001), Si(001) and InP (111)

Published online by Cambridge University Press:  01 February 2011

Khalid Naji ,
Herve Dumont ,
Guillaume Saint-Girons ,
Gilles Patriarche  and
michel Gendry
Khalid Naji
Affiliation:
[email protected], Lyon Institute of Nanotechnology, Lyon, France
Herve Dumont
Affiliation:
[email protected], Lyon Institute of Nanotechnology, lyon, France
Guillaume Saint-Girons
Affiliation:
[email protected], Lyon Institute of Nanotechnology, lyon, France
Gilles Patriarche
Affiliation:
[email protected], Lyon Institute of Nanotechnology, lyon, France
michel Gendry
Affiliation:
[email protected], Lyon Institute of Nanotechnology, lyon, France
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Abstract

Indium phosphide (InP) nanowires (NWs) were grown by molecular beam epitaxy on various substrates including SrTiO3 (001), Si (001) and InP (111) at a growth temperature of 380°C. We used the Vapor Liquid Solid assisted method with Au as a metal catalyst. The composition of the catalyst particles and the crystalline structure of the nanowires were compared using reflection high energy electron diffraction, scanning electron microscopy and high resolution transmission electron microscope. It is found that InP nanowires grown onto InP and SrTiO3 substrates are structurally defects free with a wurtzite structure. On Si (001) substrates, the presence of stacking faults and cubic phase insertion along the growth direction is observed. The effect of the substrate on the composition of catalyst droplets and consequently on the crystalline quality of the nanowires is discussed for the conditions of nucleation and defect formation.

Keywords

molecular beam epitaxy (MBE)nanostructureIII-V
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1258: Symposia P/Q/R – Low-Dimensional Functional Nanostructures-Fabrication, Characterization and Applications , 2010 , 1258-P04-06
Copyright
Copyright © Materials Research Society 2010

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