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Growth and optical properties of strained GaAs-GaxIn1-xP core-shell nanowires

Sköld, Niklas LU ; Karlsson, Lisa LU ; Larsson, Magnus LU ; Pistol, Mats-Erik LU ; Seifert, Werner LU ; Trägårdh, Johanna LU and Samuelson, Lars LU (2005) In Nano Letters 5(10). p.1943-1947
Abstract
We have synthesized GaAs-GaxIn1-xP (0.34 < x < 0.69) core-shell nanowires by metal-organic vapor phase epitaxy. The nanowire core was grown Au-catalyzed at a low temperature (450 degrees C) where only little growth takes place on the side facets. The shell was added by growth at a higher temperature (600 degrees C), where the kinetic hindrance of the side facet growth is overcome. Photoluminescence measurements on individual nanowires at 5 K showed that the emission efficiency increased by 2 to 3 orders of magnitude compared to uncapped samples. Strain effects on the band gap of lattice mismatched core-shell nanowires were studied and confirmed by calculations based on deformation potential theory.
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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nano Letters
volume
5
issue
10
pages
1943 - 1947
publisher
The American Chemical Society (ACS)
external identifiers
  • wos:000232623700016
  • pmid:16218714
  • scopus:27544477765
ISSN
1530-6992
DOI
10.1021/nl051304s
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Solid State Physics (011013006), Polymer and Materials Chemistry (LTH) (011001041)
id
3838b44a-746f-415b-831e-758b5f9b5a5a (old id 218572)
date added to LUP
2016-04-01 16:44:54
date last changed
2022-03-31 11:06:56
@article{3838b44a-746f-415b-831e-758b5f9b5a5a,
  abstract     = {{We have synthesized GaAs-GaxIn1-xP (0.34 &lt; x &lt; 0.69) core-shell nanowires by metal-organic vapor phase epitaxy. The nanowire core was grown Au-catalyzed at a low temperature (450 degrees C) where only little growth takes place on the side facets. The shell was added by growth at a higher temperature (600 degrees C), where the kinetic hindrance of the side facet growth is overcome. Photoluminescence measurements on individual nanowires at 5 K showed that the emission efficiency increased by 2 to 3 orders of magnitude compared to uncapped samples. Strain effects on the band gap of lattice mismatched core-shell nanowires were studied and confirmed by calculations based on deformation potential theory.}},
  author       = {{Sköld, Niklas and Karlsson, Lisa and Larsson, Magnus and Pistol, Mats-Erik and Seifert, Werner and Trägårdh, Johanna and Samuelson, Lars}},
  issn         = {{1530-6992}},
  language     = {{eng}},
  number       = {{10}},
  pages        = {{1943--1947}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Nano Letters}},
  title        = {{Growth and optical properties of strained GaAs-GaxIn1-xP core-shell nanowires}},
  url          = {{http://dx.doi.org/10.1021/nl051304s}},
  doi          = {{10.1021/nl051304s}},
  volume       = {{5}},
  year         = {{2005}},
}