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Branched-gallium phosphide nanowires seeded by palladium nanoparticles

Bermeo, Marie LU ; Franzen, Sara M. LU ; Hetherington, Crispin LU orcid ; Johansson, Jonas LU orcid and Messing, Maria E. LU (2023) In Nanotechnology 34(39).
Abstract

Palladium nanoparticles were produced by a chemical reagent-free and versatile method called spark ablation with control over particle size and density. These nanoparticles were used as catalytic seed particles for gallium phosphide nanowire growth by metalorganic vapour-phase epitaxy. Controlled growth of GaP nanowires using significantly small Pd nanoparticles between 10 and 40 nm diameter was achieved by varying several growth parameters. Low V/III ratios below 2.0 promote higher Ga incorporation into the Pd nanoparticles. Moderate growth temperatures under 600 °C avoid kinking and undesirable GaP surface growth. In addition, a second batch of palladium nanoparticles of concentration up to 1000 particles μm−2 was deposited... (More)

Palladium nanoparticles were produced by a chemical reagent-free and versatile method called spark ablation with control over particle size and density. These nanoparticles were used as catalytic seed particles for gallium phosphide nanowire growth by metalorganic vapour-phase epitaxy. Controlled growth of GaP nanowires using significantly small Pd nanoparticles between 10 and 40 nm diameter was achieved by varying several growth parameters. Low V/III ratios below 2.0 promote higher Ga incorporation into the Pd nanoparticles. Moderate growth temperatures under 600 °C avoid kinking and undesirable GaP surface growth. In addition, a second batch of palladium nanoparticles of concentration up to 1000 particles μm−2 was deposited onto the GaP nanowires. Subsequently, three-dimensional nanostructures evolved, with branches growing along the surface of the GaP nanowires. The GaP nanowires revealed a zinc blende structure with multiple twinning and a PdGa phase at the tip of the nanowires and branches.

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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
keywords
branched nanowires, gallium phosphide, nanoparticle, nanowire, palladium
in
Nanotechnology
volume
34
issue
39
article number
395603
publisher
IOP Publishing
external identifiers
  • pmid:37311453
  • scopus:85164396253
ISSN
0957-4484
DOI
10.1088/1361-6528/acddeb
language
English
LU publication?
yes
id
2082b0dc-eeae-4355-9666-768fdd9a1b02
date added to LUP
2023-09-04 10:32:01
date last changed
2025-01-26 06:59:44
@article{2082b0dc-eeae-4355-9666-768fdd9a1b02,
  abstract     = {{<p>Palladium nanoparticles were produced by a chemical reagent-free and versatile method called spark ablation with control over particle size and density. These nanoparticles were used as catalytic seed particles for gallium phosphide nanowire growth by metalorganic vapour-phase epitaxy. Controlled growth of GaP nanowires using significantly small Pd nanoparticles between 10 and 40 nm diameter was achieved by varying several growth parameters. Low V/III ratios below 2.0 promote higher Ga incorporation into the Pd nanoparticles. Moderate growth temperatures under 600 °C avoid kinking and undesirable GaP surface growth. In addition, a second batch of palladium nanoparticles of concentration up to 1000 particles μm<sup>−2</sup> was deposited onto the GaP nanowires. Subsequently, three-dimensional nanostructures evolved, with branches growing along the surface of the GaP nanowires. The GaP nanowires revealed a zinc blende structure with multiple twinning and a PdGa phase at the tip of the nanowires and branches.</p>}},
  author       = {{Bermeo, Marie and Franzen, Sara M. and Hetherington, Crispin and Johansson, Jonas and Messing, Maria E.}},
  issn         = {{0957-4484}},
  keywords     = {{branched nanowires; gallium phosphide; nanoparticle; nanowire; palladium}},
  language     = {{eng}},
  number       = {{39}},
  publisher    = {{IOP Publishing}},
  series       = {{Nanotechnology}},
  title        = {{Branched-gallium phosphide nanowires seeded by palladium nanoparticles}},
  url          = {{http://dx.doi.org/10.1088/1361-6528/acddeb}},
  doi          = {{10.1088/1361-6528/acddeb}},
  volume       = {{34}},
  year         = {{2023}},
}