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Composition of Gold Alloy Seeded InGaAs Nanowires in the Nucleation Limited Regime

Johansson, Jonas LU and Ghasemi, Masoomeh LU (2017) In Crystal Growth and Design 17(4). p.1630-1635
Abstract

We explain the composition of gold alloy particle seeded InGaAs nanowires in the nucleation limited regime. We use binary nucleation modeling to account for the nucleation of InGaAs from a supersaturated quaternary liquid alloy particle containing Au, In, Ga, and As. In our modeling we use realistic chemical potential differences between the seed particle and the nanowire. The chemical potentials are calculated from assessed thermodynamic parameters for Au, In, Ga, As, InAs, and GaAs in all relevant phases. Using binary nucleation theory we are able to link the composition of the seed particle to the composition of the nanowire under different conditions. We vary the seed particle concentrations of As, Ga, and In and the temperature.... (More)

We explain the composition of gold alloy particle seeded InGaAs nanowires in the nucleation limited regime. We use binary nucleation modeling to account for the nucleation of InGaAs from a supersaturated quaternary liquid alloy particle containing Au, In, Ga, and As. In our modeling we use realistic chemical potential differences between the seed particle and the nanowire. The chemical potentials are calculated from assessed thermodynamic parameters for Au, In, Ga, As, InAs, and GaAs in all relevant phases. Using binary nucleation theory we are able to link the composition of the seed particle to the composition of the nanowire under different conditions. We vary the seed particle concentrations of As, Ga, and In and the temperature. For each of these conditions, we calculate the Gibbs free energy landscape for nucleation. The size and composition of the critical nucleus is given by the location of the saddle point in this free energy landscape. We foresee that these results will be essential for understanding the limitations of composition control in gold alloy seeded InGaAs nanowires.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Crystal Growth and Design
volume
17
issue
4
pages
6 pages
publisher
The American Chemical Society
external identifiers
  • scopus:85017141459
  • wos:000398884400025
ISSN
1528-7483
DOI
10.1021/acs.cgd.6b01653
language
English
LU publication?
yes
id
8b903b38-0057-42d7-8f5c-f612d4692e61
date added to LUP
2017-04-26 16:01:38
date last changed
2017-09-24 05:10:05
@article{8b903b38-0057-42d7-8f5c-f612d4692e61,
  abstract     = {<p>We explain the composition of gold alloy particle seeded InGaAs nanowires in the nucleation limited regime. We use binary nucleation modeling to account for the nucleation of InGaAs from a supersaturated quaternary liquid alloy particle containing Au, In, Ga, and As. In our modeling we use realistic chemical potential differences between the seed particle and the nanowire. The chemical potentials are calculated from assessed thermodynamic parameters for Au, In, Ga, As, InAs, and GaAs in all relevant phases. Using binary nucleation theory we are able to link the composition of the seed particle to the composition of the nanowire under different conditions. We vary the seed particle concentrations of As, Ga, and In and the temperature. For each of these conditions, we calculate the Gibbs free energy landscape for nucleation. The size and composition of the critical nucleus is given by the location of the saddle point in this free energy landscape. We foresee that these results will be essential for understanding the limitations of composition control in gold alloy seeded InGaAs nanowires.</p>},
  author       = {Johansson, Jonas and Ghasemi, Masoomeh},
  issn         = {1528-7483},
  language     = {eng},
  month        = {04},
  number       = {4},
  pages        = {1630--1635},
  publisher    = {The American Chemical Society},
  series       = {Crystal Growth and Design},
  title        = {Composition of Gold Alloy Seeded InGaAs Nanowires in the Nucleation Limited Regime},
  url          = {http://dx.doi.org/10.1021/acs.cgd.6b01653},
  volume       = {17},
  year         = {2017},
}