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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 ; Johansson, Jonas LU ; 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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author
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
2019-10-23 06:24:24
@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},
}