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Elastic and Piezoelectric Properties of Zincblende and Wurtzite Crystalline Nanowire Heterostructures.

Boxberg, Fredrik LU ; Søndergaard, Niels LU and Xu, Hongqi LU (2012) In Advanced Materials 24(34). p.4692-4706
Abstract
The elastic and piezoelectric properties of zincblende and wurtzite crystalline InAs/InP nanowire heterostructures have been studied using electro-elastically coupled continuum elasticity theory. A comprehensive comparison of strains, piezoelectric potentials and piezoelectric fields in the two crystal types of nanowire heterostructures is presented. For each crystal type, three different forms of heterostructures-core-shell, axial superlattice, and quantum dot nanowire heterostructures-are considered. In the studied nanowire heterostructures, the principal strains are found to be insensitive to the change in the crystal structure. However, the shear strains in the zincblende and wurtzite nanowire heterostructures can be very different.... (More)
The elastic and piezoelectric properties of zincblende and wurtzite crystalline InAs/InP nanowire heterostructures have been studied using electro-elastically coupled continuum elasticity theory. A comprehensive comparison of strains, piezoelectric potentials and piezoelectric fields in the two crystal types of nanowire heterostructures is presented. For each crystal type, three different forms of heterostructures-core-shell, axial superlattice, and quantum dot nanowire heterostructures-are considered. In the studied nanowire heterostructures, the principal strains are found to be insensitive to the change in the crystal structure. However, the shear strains in the zincblende and wurtzite nanowire heterostructures can be very different. All the studied nanowire heterostructures are found to exhibit a piezoelectric field along the nanowire axis. The piezoelectric field is in general much stronger in a wurtzite nanowire heterostructure than in its corresponding zincblende heterostructure. Our results are expected to be particularly important for analyzing and understanding the properties of epitaxially grown nanowire heterostructures and for applications in nanowire electronics, optoelectronics, and biochemical sensing. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Advanced Materials
volume
24
issue
34
pages
4692 - 4706
publisher
John Wiley & Sons
external identifiers
  • wos:000307944500014
  • pmid:22605617
  • scopus:84865578214
ISSN
1521-4095
DOI
10.1002/adma.201200370
language
English
LU publication?
yes
id
f4c25777-7588-48d5-b878-9df1b82b8982 (old id 2608755)
date added to LUP
2012-06-04 16:22:54
date last changed
2017-01-08 03:10:06
@article{f4c25777-7588-48d5-b878-9df1b82b8982,
  abstract     = {The elastic and piezoelectric properties of zincblende and wurtzite crystalline InAs/InP nanowire heterostructures have been studied using electro-elastically coupled continuum elasticity theory. A comprehensive comparison of strains, piezoelectric potentials and piezoelectric fields in the two crystal types of nanowire heterostructures is presented. For each crystal type, three different forms of heterostructures-core-shell, axial superlattice, and quantum dot nanowire heterostructures-are considered. In the studied nanowire heterostructures, the principal strains are found to be insensitive to the change in the crystal structure. However, the shear strains in the zincblende and wurtzite nanowire heterostructures can be very different. All the studied nanowire heterostructures are found to exhibit a piezoelectric field along the nanowire axis. The piezoelectric field is in general much stronger in a wurtzite nanowire heterostructure than in its corresponding zincblende heterostructure. Our results are expected to be particularly important for analyzing and understanding the properties of epitaxially grown nanowire heterostructures and for applications in nanowire electronics, optoelectronics, and biochemical sensing.},
  author       = {Boxberg, Fredrik and Søndergaard, Niels and Xu, Hongqi},
  issn         = {1521-4095},
  language     = {eng},
  number       = {34},
  pages        = {4692--4706},
  publisher    = {John Wiley & Sons},
  series       = {Advanced Materials},
  title        = {Elastic and Piezoelectric Properties of Zincblende and Wurtzite Crystalline Nanowire Heterostructures.},
  url          = {http://dx.doi.org/10.1002/adma.201200370},
  volume       = {24},
  year         = {2012},
}