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Compositional Correlation between the Nanoparticle and the Growing Au-Assisted InxGa1-xAs Nanowire

Sjökvist, Robin LU orcid ; Jacobsson, Daniel ; Tornberg, Marcus LU ; Wallenberg, Reine LU ; Leshchenko, Egor D. LU ; Johansson, Jonas LU orcid and Dick, Kimberly A. LU (2021) In Journal of Physical Chemistry Letters 12(31). p.7590-7595
Abstract

The nanowire geometry is favorable for the growth of ternary semiconductor materials, because the composition and properties can be tuned freely without substrate lattice matching. To achieve precise control of the composition in ternary semiconductor nanowires, a deeper understanding of the growth is required. One unknown aspect of seeded nanowire growth is how the composition of the catalyst nanoparticle affects the resulting composition of the growing nanowire. We report the first in situ measurements of the nanoparticle and InxGa1-xAs nanowire compositional relationship using an environmental transmission electron microscopy setup. The compositions were measured and correlated during growth, via X-ray energy dispersive spectroscopy.... (More)

The nanowire geometry is favorable for the growth of ternary semiconductor materials, because the composition and properties can be tuned freely without substrate lattice matching. To achieve precise control of the composition in ternary semiconductor nanowires, a deeper understanding of the growth is required. One unknown aspect of seeded nanowire growth is how the composition of the catalyst nanoparticle affects the resulting composition of the growing nanowire. We report the first in situ measurements of the nanoparticle and InxGa1-xAs nanowire compositional relationship using an environmental transmission electron microscopy setup. The compositions were measured and correlated during growth, via X-ray energy dispersive spectroscopy. Contrary to predictions from thermodynamic models, the experimental results do not show a miscibility gap. Therefore, we construct a kinetic model that better predicts the compositional trends by suppressing the miscibility gap. The findings imply that compositional control of InxGa1-xAs nanowires is possible across the entire compositional range.

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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physical Chemistry Letters
volume
12
issue
31
pages
6 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:85113694124
  • pmid:34347497
ISSN
1948-7185
DOI
10.1021/acs.jpclett.1c02121
project
Kinetic and thermodynamic modelling of ternary nanowire growth
language
English
LU publication?
yes
id
25e34377-aaae-49d4-8aba-802bb327cadf
date added to LUP
2021-09-27 16:28:15
date last changed
2024-04-20 12:02:23
@article{25e34377-aaae-49d4-8aba-802bb327cadf,
  abstract     = {{<p>The nanowire geometry is favorable for the growth of ternary semiconductor materials, because the composition and properties can be tuned freely without substrate lattice matching. To achieve precise control of the composition in ternary semiconductor nanowires, a deeper understanding of the growth is required. One unknown aspect of seeded nanowire growth is how the composition of the catalyst nanoparticle affects the resulting composition of the growing nanowire. We report the first in situ measurements of the nanoparticle and InxGa1-xAs nanowire compositional relationship using an environmental transmission electron microscopy setup. The compositions were measured and correlated during growth, via X-ray energy dispersive spectroscopy. Contrary to predictions from thermodynamic models, the experimental results do not show a miscibility gap. Therefore, we construct a kinetic model that better predicts the compositional trends by suppressing the miscibility gap. The findings imply that compositional control of InxGa1-xAs nanowires is possible across the entire compositional range. </p>}},
  author       = {{Sjökvist, Robin and Jacobsson, Daniel and Tornberg, Marcus and Wallenberg, Reine and Leshchenko, Egor D. and Johansson, Jonas and Dick, Kimberly A.}},
  issn         = {{1948-7185}},
  language     = {{eng}},
  month        = {{08}},
  number       = {{31}},
  pages        = {{7590--7595}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Journal of Physical Chemistry Letters}},
  title        = {{Compositional Correlation between the Nanoparticle and the Growing Au-Assisted In<sub>x</sub>Ga<sub>1-x</sub>As Nanowire}},
  url          = {{http://dx.doi.org/10.1021/acs.jpclett.1c02121}},
  doi          = {{10.1021/acs.jpclett.1c02121}},
  volume       = {{12}},
  year         = {{2021}},
}