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Limits of III-V Nanowire Growth Based on Droplet Dynamics

Tornberg, Marcus LU ; Maliakkal, Carina B. LU ; Jacobsson, Daniel LU ; Dick, Kimberly A. LU and Johansson, Jonas LU orcid (2020) In Journal of Physical Chemistry Letters 11(8). p.2949-2954
Abstract

Crystal growth of semiconductor nanowires from a liquid droplet depends on the stability of this droplet's liquid-solid interface. Because of the assisting property of the droplet, growth will be hindered if the droplet is displaced onto the nanowire sidewalls. Using real-time observation of such growth by in situ transmission electron microscopy combined with theoretical analysis of the surface energies involved, we observe a reoccurring truncation at the edge of the droplet-nanowire interface. We demonstrate that creating a truncation widens the parameter range for having a droplet on the top facet, which allows continued nanowire growth. Combining experiment and theory provides an explanation for the previously reported truncation... (More)

Crystal growth of semiconductor nanowires from a liquid droplet depends on the stability of this droplet's liquid-solid interface. Because of the assisting property of the droplet, growth will be hindered if the droplet is displaced onto the nanowire sidewalls. Using real-time observation of such growth by in situ transmission electron microscopy combined with theoretical analysis of the surface energies involved, we observe a reoccurring truncation at the edge of the droplet-nanowire interface. We demonstrate that creating a truncation widens the parameter range for having a droplet on the top facet, which allows continued nanowire growth. Combining experiment and theory provides an explanation for the previously reported truncation phenomenon of the growth interface based only on droplet wetting dynamics. In addition to determining the fundamental limits of droplet-assisted nanowire growth, this allows experimental estimation of the surface tension and the surface energies of the nanowire such as the otherwise metastable wurtzite GaAs {101¯ 0} facet.

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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physical Chemistry Letters
volume
11
issue
8
pages
6 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • pmid:32208728
  • scopus:85083544033
ISSN
1948-7185
DOI
10.1021/acs.jpclett.0c00387
language
English
LU publication?
yes
id
f46db7c2-4577-4ade-ba63-c6df74daabc3
date added to LUP
2021-01-12 13:16:08
date last changed
2024-04-17 23:37:02
@article{f46db7c2-4577-4ade-ba63-c6df74daabc3,
  abstract     = {{<p>Crystal growth of semiconductor nanowires from a liquid droplet depends on the stability of this droplet's liquid-solid interface. Because of the assisting property of the droplet, growth will be hindered if the droplet is displaced onto the nanowire sidewalls. Using real-time observation of such growth by in situ transmission electron microscopy combined with theoretical analysis of the surface energies involved, we observe a reoccurring truncation at the edge of the droplet-nanowire interface. We demonstrate that creating a truncation widens the parameter range for having a droplet on the top facet, which allows continued nanowire growth. Combining experiment and theory provides an explanation for the previously reported truncation phenomenon of the growth interface based only on droplet wetting dynamics. In addition to determining the fundamental limits of droplet-assisted nanowire growth, this allows experimental estimation of the surface tension and the surface energies of the nanowire such as the otherwise metastable wurtzite GaAs {101&amp;macr; 0} facet.</p>}},
  author       = {{Tornberg, Marcus and Maliakkal, Carina B. and Jacobsson, Daniel and Dick, Kimberly A. and Johansson, Jonas}},
  issn         = {{1948-7185}},
  language     = {{eng}},
  number       = {{8}},
  pages        = {{2949--2954}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Journal of Physical Chemistry Letters}},
  title        = {{Limits of III-V Nanowire Growth Based on Droplet Dynamics}},
  url          = {{http://dx.doi.org/10.1021/acs.jpclett.0c00387}},
  doi          = {{10.1021/acs.jpclett.0c00387}},
  volume       = {{11}},
  year         = {{2020}},
}