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The morphology of axial and branched nanowire heterostructures

Dick Thelander, Kimberly LU ; Kodambaka, Suneel; Reuter, Mark C.; Deppert, Knut LU ; Samuelson, Lars LU ; Seifert, Werner LU ; Wallenberg, Reine LU and Ross, Frances M. (2007) In Nano Letters 7(6). p.1817-1822
Abstract
We present an extensive investigation of the epitaxial growth of Au-assisted axial heterostructure nanowires composed of group IV and III-V materials and derive a model to explain the overall morphology of such wires. By analogy with 2D epitaxial growth, this model relates the wire morphology (i.e., whether it is kinked or straight) to the relationship of the interface energies between the two materials and the particle. This model suggests that, for any pair of materials, it should be easier to form a straight wire with one interface direction than the other, and we demonstrate this for the material combinations presented here. However, such factors as kinetics and the use of surfactants may permit the growth of straight double... (More)
We present an extensive investigation of the epitaxial growth of Au-assisted axial heterostructure nanowires composed of group IV and III-V materials and derive a model to explain the overall morphology of such wires. By analogy with 2D epitaxial growth, this model relates the wire morphology (i.e., whether it is kinked or straight) to the relationship of the interface energies between the two materials and the particle. This model suggests that, for any pair of materials, it should be easier to form a straight wire with one interface direction than the other, and we demonstrate this for the material combinations presented here. However, such factors as kinetics and the use of surfactants may permit the growth of straight double heterostructure nanowires. Finally, we demonstrate that branched nanowire heterostructures, also known as nanotrees, can be successfully explained by the same model. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nano Letters
volume
7
issue
6
pages
1817 - 1822
publisher
The American Chemical Society
external identifiers
  • wos:000247186800067
  • scopus:34547244669
ISSN
1530-6992
DOI
10.1021/nl0705900
language
English
LU publication?
yes
id
52a97f01-6c6c-4423-8f5c-a0ccd5be1aa8 (old id 648736)
alternative location
http://pubs.acs.org/cgi-bin/article.cgi/nalefd/2007/7/i06/pdf/nl0705900.pdf
date added to LUP
2007-12-04 17:20:25
date last changed
2017-11-19 04:15:33
@article{52a97f01-6c6c-4423-8f5c-a0ccd5be1aa8,
  abstract     = {We present an extensive investigation of the epitaxial growth of Au-assisted axial heterostructure nanowires composed of group IV and III-V materials and derive a model to explain the overall morphology of such wires. By analogy with 2D epitaxial growth, this model relates the wire morphology (i.e., whether it is kinked or straight) to the relationship of the interface energies between the two materials and the particle. This model suggests that, for any pair of materials, it should be easier to form a straight wire with one interface direction than the other, and we demonstrate this for the material combinations presented here. However, such factors as kinetics and the use of surfactants may permit the growth of straight double heterostructure nanowires. Finally, we demonstrate that branched nanowire heterostructures, also known as nanotrees, can be successfully explained by the same model.},
  author       = {Dick Thelander, Kimberly and Kodambaka, Suneel and Reuter, Mark C. and Deppert, Knut and Samuelson, Lars and Seifert, Werner and Wallenberg, Reine and Ross, Frances M.},
  issn         = {1530-6992},
  language     = {eng},
  number       = {6},
  pages        = {1817--1822},
  publisher    = {The American Chemical Society},
  series       = {Nano Letters},
  title        = {The morphology of axial and branched nanowire heterostructures},
  url          = {http://dx.doi.org/10.1021/nl0705900},
  volume       = {7},
  year         = {2007},
}