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Photovoltaics with Piezoelectric Core-Shell Nanowires

Boxberg, Fredrik LU ; Søndergaard, Niels LU and Xu, Hongqi LU (2010) In Nano Letters 10(4). p.1108-1112
Abstract
We report on a theoretical discovery of a generic piezoelectric held in strained core shell compound semiconductor nanowires. We show, using both an analytical model and numerical simulations based on fully electroelastically coupled continuum elasticity theory, that lattice-mismatch-induced strain in an epiraxial core shell nanowire gives rise to an internal electric held along the axis of the nanowire. This piezoelectric field results predominantly from atomic layer displacements along the nanowire axis within both the core and shell materials and can appear in both zinc blende and wurtzite crystalline core-shell nanowires. The effect can be employed to separate photon-generated electron hole pairs in the core shell nanowires and thus... (More)
We report on a theoretical discovery of a generic piezoelectric held in strained core shell compound semiconductor nanowires. We show, using both an analytical model and numerical simulations based on fully electroelastically coupled continuum elasticity theory, that lattice-mismatch-induced strain in an epiraxial core shell nanowire gives rise to an internal electric held along the axis of the nanowire. This piezoelectric field results predominantly from atomic layer displacements along the nanowire axis within both the core and shell materials and can appear in both zinc blende and wurtzite crystalline core-shell nanowires. The effect can be employed to separate photon-generated electron hole pairs in the core shell nanowires and thus offers a new device concept for solar energy conversion. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
photovoltaic, Semiconductor nanowires, piezoelectric, core-shell, strain
in
Nano Letters
volume
10
issue
4
pages
1108 - 1112
publisher
The American Chemical Society
external identifiers
  • wos:000276557100002
  • scopus:77951047226
ISSN
1530-6992
DOI
10.1021/nl9040934
language
English
LU publication?
yes
id
171280e9-12fa-40eb-9ca2-32a0efed86e5 (old id 1603659)
date added to LUP
2010-05-17 14:31:57
date last changed
2018-06-10 04:05:47
@article{171280e9-12fa-40eb-9ca2-32a0efed86e5,
  abstract     = {We report on a theoretical discovery of a generic piezoelectric held in strained core shell compound semiconductor nanowires. We show, using both an analytical model and numerical simulations based on fully electroelastically coupled continuum elasticity theory, that lattice-mismatch-induced strain in an epiraxial core shell nanowire gives rise to an internal electric held along the axis of the nanowire. This piezoelectric field results predominantly from atomic layer displacements along the nanowire axis within both the core and shell materials and can appear in both zinc blende and wurtzite crystalline core-shell nanowires. The effect can be employed to separate photon-generated electron hole pairs in the core shell nanowires and thus offers a new device concept for solar energy conversion.},
  author       = {Boxberg, Fredrik and Søndergaard, Niels and Xu, Hongqi},
  issn         = {1530-6992},
  keyword      = {photovoltaic,Semiconductor nanowires,piezoelectric,core-shell,strain},
  language     = {eng},
  number       = {4},
  pages        = {1108--1112},
  publisher    = {The American Chemical Society},
  series       = {Nano Letters},
  title        = {Photovoltaics with Piezoelectric Core-Shell Nanowires},
  url          = {http://dx.doi.org/10.1021/nl9040934},
  volume       = {10},
  year         = {2010},
}