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In situ analysis of catalyst composition during gold catalyzed GaAs nanowire growth

Maliakkal, Carina B. LU ; Jacobsson, Daniel LU ; Tornberg, Marcus LU ; Persson, Axel R. LU orcid ; Johansson, Jonas LU orcid ; Wallenberg, Reine LU and Dick, Kimberly A. LU (2019) In Nature Communications 10(1).
Abstract

Semiconductor nanowires offer the opportunity to incorporate novel structures and functionality into electronic and optoelectronic devices. A clear understanding of the nanowire growth mechanism is essential for well-controlled growth of structures with desired properties, but the understanding is currently limited by a lack of empirical measurements of important parameters during growth, such as catalyst particle composition. However, this is difficult to accurately determine by investigating post-growth. We report direct in situ measurement of the catalyst composition during nanowire growth for the first time. We study Au-seeded GaAs nanowires inside an electron microscope as they grow and measure the catalyst composition using X-ray... (More)

Semiconductor nanowires offer the opportunity to incorporate novel structures and functionality into electronic and optoelectronic devices. A clear understanding of the nanowire growth mechanism is essential for well-controlled growth of structures with desired properties, but the understanding is currently limited by a lack of empirical measurements of important parameters during growth, such as catalyst particle composition. However, this is difficult to accurately determine by investigating post-growth. We report direct in situ measurement of the catalyst composition during nanowire growth for the first time. We study Au-seeded GaAs nanowires inside an electron microscope as they grow and measure the catalyst composition using X-ray energy dispersive spectroscopy. The Ga content in the catalyst during growth increases with both temperature and Ga precursor flux.

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Please use this url to cite or link to this publication:
author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nature Communications
volume
10
issue
1
article number
4577
publisher
Nature Publishing Group
external identifiers
  • pmid:31594930
  • scopus:85073056209
ISSN
2041-1723
DOI
10.1038/s41467-019-12437-6
language
English
LU publication?
yes
id
a21bda6c-e085-45a8-8c6b-6f0683cae899
date added to LUP
2019-10-22 09:42:46
date last changed
2024-09-04 10:15:53
@article{a21bda6c-e085-45a8-8c6b-6f0683cae899,
  abstract     = {{<p>Semiconductor nanowires offer the opportunity to incorporate novel structures and functionality into electronic and optoelectronic devices. A clear understanding of the nanowire growth mechanism is essential for well-controlled growth of structures with desired properties, but the understanding is currently limited by a lack of empirical measurements of important parameters during growth, such as catalyst particle composition. However, this is difficult to accurately determine by investigating post-growth. We report direct in situ measurement of the catalyst composition during nanowire growth for the first time. We study Au-seeded GaAs nanowires inside an electron microscope as they grow and measure the catalyst composition using X-ray energy dispersive spectroscopy. The Ga content in the catalyst during growth increases with both temperature and Ga precursor flux.</p>}},
  author       = {{Maliakkal, Carina B. and Jacobsson, Daniel and Tornberg, Marcus and Persson, Axel R. and Johansson, Jonas and Wallenberg, Reine and Dick, Kimberly A.}},
  issn         = {{2041-1723}},
  language     = {{eng}},
  month        = {{10}},
  number       = {{1}},
  publisher    = {{Nature Publishing Group}},
  series       = {{Nature Communications}},
  title        = {{In situ analysis of catalyst composition during gold catalyzed GaAs nanowire growth}},
  url          = {{http://dx.doi.org/10.1038/s41467-019-12437-6}},
  doi          = {{10.1038/s41467-019-12437-6}},
  volume       = {{10}},
  year         = {{2019}},
}