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Photovoltaics with piezoelectric core-shell nanowires

Boxberg, Fredrik LU ; Sondergard, Niels; Xu, Hongqi LU ; Wallentin, Jesper LU ; Jin, Aizi; Trygg, Erik and Borgström, Magnus LU (2011) 30th International Conference on the Physics of Semiconductors (ICPS-30) In Physics of Semiconductors: 30th International Conference on the Physics of Semiconductors 1399. p.469-470
Abstract
We report on the discovery of a generic piezoelectric field in strained core-shell compound semiconductor nanowires. We present the lattice-mismatch induced strain in epitaxial core-shell nanowires and show that it gives, very generally, rise to an internal piezoelectric field along the axis of the nanowire. This field results predominantly from atomic displacements in polar bonds and microscopic polarizations along the nanowire axis within both the core and shell materials. The mechanism and internal piezoelectric field is particularly strong in < 111 > orientated zinc blende and [0001] orientated wurtzite crystalline core-shell nanowires. The effect can be employed to generate the potovoltaic effect in core-shell nanowires free of... (More)
We report on the discovery of a generic piezoelectric field in strained core-shell compound semiconductor nanowires. We present the lattice-mismatch induced strain in epitaxial core-shell nanowires and show that it gives, very generally, rise to an internal piezoelectric field along the axis of the nanowire. This field results predominantly from atomic displacements in polar bonds and microscopic polarizations along the nanowire axis within both the core and shell materials. The mechanism and internal piezoelectric field is particularly strong in < 111 > orientated zinc blende and [0001] orientated wurtzite crystalline core-shell nanowires. The effect can be employed to generate the potovoltaic effect in core-shell nanowires free of doping and thus offers a new device concept for solar cells and photodetectors. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Nanowires, strain, piezoelectric, photovoltaic
in
Physics of Semiconductors: 30th International Conference on the Physics of Semiconductors
volume
1399
pages
469 - 470
publisher
American Institute of Physics
conference name
30th International Conference on the Physics of Semiconductors (ICPS-30)
external identifiers
  • wos:000301053000218
  • scopus:84862794313
ISSN
0094-243X
1551-7616
DOI
10.1063/1.3666457
language
English
LU publication?
yes
id
930e4bd2-c38d-4b5f-a1ce-b32474a8f368 (old id 2493669)
date added to LUP
2012-05-11 15:14:47
date last changed
2017-01-01 03:17:07
@inproceedings{930e4bd2-c38d-4b5f-a1ce-b32474a8f368,
  abstract     = {We report on the discovery of a generic piezoelectric field in strained core-shell compound semiconductor nanowires. We present the lattice-mismatch induced strain in epitaxial core-shell nanowires and show that it gives, very generally, rise to an internal piezoelectric field along the axis of the nanowire. This field results predominantly from atomic displacements in polar bonds and microscopic polarizations along the nanowire axis within both the core and shell materials. The mechanism and internal piezoelectric field is particularly strong in &lt; 111 &gt; orientated zinc blende and [0001] orientated wurtzite crystalline core-shell nanowires. The effect can be employed to generate the potovoltaic effect in core-shell nanowires free of doping and thus offers a new device concept for solar cells and photodetectors.},
  author       = {Boxberg, Fredrik and Sondergard, Niels and Xu, Hongqi and Wallentin, Jesper and Jin, Aizi and Trygg, Erik and Borgström, Magnus},
  booktitle    = {Physics of Semiconductors: 30th International Conference on the Physics of Semiconductors},
  issn         = {0094-243X},
  keyword      = {Nanowires,strain,piezoelectric,photovoltaic},
  language     = {eng},
  pages        = {469--470},
  publisher    = {American Institute of Physics},
  title        = {Photovoltaics with piezoelectric core-shell nanowires},
  url          = {http://dx.doi.org/10.1063/1.3666457},
  volume       = {1399},
  year         = {2011},
}