Branched-gallium phosphide nanowires seeded by palladium nanoparticles

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 gr...

Full description

Saved in:
Bibliographic Details
Published in:Nanotechnology 2023-09, Vol.34 (39), p.395603
Main Authors: Bermeo, Marie, Franzen, Sara M, Hetherington, Crispin, Johansson, Jonas, Messing, Maria E
Format: Article
Language:English
Subjects:
branched nanowires
Condensed Matter Physics
Den kondenserade materiens fysik
Fysik
gallium phosphide
nanoparticle
nanowire
Natural Sciences
Naturvetenskap
palladium
Physical Sciences
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 m 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.
ISSN:0957-4484
1361-6528
DOI:10.1088/1361-6528/acddeb