Phase Segregation in AlInP Shells on GaAs Nanowires
(2006) In Nano Letters 6(12). p.2743-2747- Abstract
- We have studied morphology and phase segregation of AlInP shells on GaAs nanowires. Photoluminescence measurements on single core-
shell nanowires indicated variations in the shell composition, and phase segregation was confirmed by cross-sectional scanning transmission
electron microscopy on 30 nm thin slices of the wires. It was discovered that Al-rich domains form in the á112ñ directions where two {110}
shell facets meet during growth. We propose that the mechanism behind this phase segregation is a variation in the chemical potential along
the circumference of the nanowire together with a difference in diffusion lengths for the different growth species. From the morphology of the
core and... (More) - We have studied morphology and phase segregation of AlInP shells on GaAs nanowires. Photoluminescence measurements on single core-
shell nanowires indicated variations in the shell composition, and phase segregation was confirmed by cross-sectional scanning transmission
electron microscopy on 30 nm thin slices of the wires. It was discovered that Al-rich domains form in the á112ñ directions where two {110}
shell facets meet during growth. We propose that the mechanism behind this phase segregation is a variation in the chemical potential along
the circumference of the nanowire together with a difference in diffusion lengths for the different growth species. From the morphology of the
core and the shell, we conclude that the side facet growth is temperature dependent forming {112} facets at low growth temperature and
{110} facets at high growth temperature (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/644075
- author
- Sköld, Niklas LU ; Wagner, Jakob LU ; Karlsson, Gunnel LU ; Hernan, Tania ; Seifert, Werner LU ; Pistol, Mats-Erik LU and Samuelson, Lars LU
- organization
- publishing date
- 2006
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Nano Letters
- volume
- 6
- issue
- 12
- pages
- 2743 - 2747
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000242786500019
- scopus:33846341806
- ISSN
- 1530-6992
- DOI
- 10.1021/nl061692d
- 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
- 629a6a8b-8463-40b9-a562-3f3b92358d11 (old id 644075)
- alternative location
- http://pubs.acs.org/cgi-bin/article.cgi/nalefd/2006/6/i12/pdf/nl061692d.pdf
- date added to LUP
- 2016-04-01 16:16:38
- date last changed
- 2022-04-15 03:26:43
@article{629a6a8b-8463-40b9-a562-3f3b92358d11,
abstract = {{We have studied morphology and phase segregation of AlInP shells on GaAs nanowires. Photoluminescence measurements on single core-<br/><br>
shell nanowires indicated variations in the shell composition, and phase segregation was confirmed by cross-sectional scanning transmission<br/><br>
electron microscopy on 30 nm thin slices of the wires. It was discovered that Al-rich domains form in the á112ñ directions where two {110}<br/><br>
shell facets meet during growth. We propose that the mechanism behind this phase segregation is a variation in the chemical potential along<br/><br>
the circumference of the nanowire together with a difference in diffusion lengths for the different growth species. From the morphology of the<br/><br>
core and the shell, we conclude that the side facet growth is temperature dependent forming {112} facets at low growth temperature and<br/><br>
{110} facets at high growth temperature}},
author = {{Sköld, Niklas and Wagner, Jakob and Karlsson, Gunnel and Hernan, Tania and Seifert, Werner and Pistol, Mats-Erik and Samuelson, Lars}},
issn = {{1530-6992}},
language = {{eng}},
number = {{12}},
pages = {{2743--2747}},
publisher = {{The American Chemical Society (ACS)}},
series = {{Nano Letters}},
title = {{Phase Segregation in AlInP Shells on GaAs Nanowires}},
url = {{http://dx.doi.org/10.1021/nl061692d}},
doi = {{10.1021/nl061692d}},
volume = {{6}},
year = {{2006}},
}