Advanced

Direct Measure of Strain and Electronic Structure in GaAs/GaP Core-Shell Nanowires

Montazeri, Mohammad; Fickenscher, Melodie; Smith, Leigh M.; Jackson, Howard E.; Yarrison-Rice, Jan; Kang, Jung Hyun; Gao, Qiang; Tan, H. Hoe; Jagadish, Chennupati and Guo, Yanan, et al. (2010) In Nano Letters 10(3). p.880-886
Abstract
Highly strained GaAs/GaP nanowires of excellent optical quality were grown with 50 nm diameter GaAs cores and 25 nm GaP shells. Photoluminescence from these nanowires is observed at energies dramatically shifted from the unstrained GaAs free exciton emission energy by 260 meV. Using Raman scattering, we show that it is possible to separately measure the degree of compressive and shear strain of the GaAs core and show that the Raman response of the GaP shell is consistent with tensile strain. The Raman and photoluminescence measurement are both on good agreement with 8 band k.p calculations, This result opens up new possibilities for engineering the electronic properties of the nanowires for optimal design of one-dimensional nanodevices by... (More)
Highly strained GaAs/GaP nanowires of excellent optical quality were grown with 50 nm diameter GaAs cores and 25 nm GaP shells. Photoluminescence from these nanowires is observed at energies dramatically shifted from the unstrained GaAs free exciton emission energy by 260 meV. Using Raman scattering, we show that it is possible to separately measure the degree of compressive and shear strain of the GaAs core and show that the Raman response of the GaP shell is consistent with tensile strain. The Raman and photoluminescence measurement are both on good agreement with 8 band k.p calculations, This result opens up new possibilities for engineering the electronic properties of the nanowires for optimal design of one-dimensional nanodevices by controlling the strain of the core and shell by varying the nanowire geometry. (Less)
Please use this url to cite or link to this publication:
author
, et al. (More)
(Less)
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
photoluminescence, Strained nanowires, core-shell nanowires, Raman
in
Nano Letters
volume
10
issue
3
pages
880 - 886
publisher
The American Chemical Society
external identifiers
  • wos:000275278200023
  • scopus:77949476701
ISSN
1530-6992
DOI
10.1021/nl903547r
language
English
LU publication?
yes
id
4113da69-63af-42d6-b993-b820adfd5424 (old id 1589429)
date added to LUP
2010-04-20 10:51:03
date last changed
2018-05-29 10:59:05
@article{4113da69-63af-42d6-b993-b820adfd5424,
  abstract     = {Highly strained GaAs/GaP nanowires of excellent optical quality were grown with 50 nm diameter GaAs cores and 25 nm GaP shells. Photoluminescence from these nanowires is observed at energies dramatically shifted from the unstrained GaAs free exciton emission energy by 260 meV. Using Raman scattering, we show that it is possible to separately measure the degree of compressive and shear strain of the GaAs core and show that the Raman response of the GaP shell is consistent with tensile strain. The Raman and photoluminescence measurement are both on good agreement with 8 band k.p calculations, This result opens up new possibilities for engineering the electronic properties of the nanowires for optimal design of one-dimensional nanodevices by controlling the strain of the core and shell by varying the nanowire geometry.},
  author       = {Montazeri, Mohammad and Fickenscher, Melodie and Smith, Leigh M. and Jackson, Howard E. and Yarrison-Rice, Jan and Kang, Jung Hyun and Gao, Qiang and Tan, H. Hoe and Jagadish, Chennupati and Guo, Yanan and Zou, Jin and Pistol, Mats-Erik and Pryor, Craig E.},
  issn         = {1530-6992},
  keyword      = {photoluminescence,Strained nanowires,core-shell nanowires,Raman},
  language     = {eng},
  number       = {3},
  pages        = {880--886},
  publisher    = {The American Chemical Society},
  series       = {Nano Letters},
  title        = {Direct Measure of Strain and Electronic Structure in GaAs/GaP Core-Shell Nanowires},
  url          = {http://dx.doi.org/10.1021/nl903547r},
  volume       = {10},
  year         = {2010},
}