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Nanowire-based structures for infrared to ultraviolet emitters studied by cathodoluminescence.

Gustafsson, Anders LU (2015) In Journal of Microscopy
Abstract
Nanowires are structures with features on the nanoscale, and it is therefore essential to study their properties on that scale. We present optical data from a variety of nanowire-based structures using cathodoluminescence imaging and spectroscopy. One important feature of nanowires is the stacking sequence of the crystal, either zincblede, wurtzite or a mix of the two. We show that this has an impact on the optical properties. In radial quantum wells, the thickness can be controlled on a monolayer level, in the case of flat side facets of the nanowires. With rough side facets, the quantum well collapses into quantum dots, as revealed by cathodoluminescence imaging. In order to extend the emission wavelength of light-emitting diodes into... (More)
Nanowires are structures with features on the nanoscale, and it is therefore essential to study their properties on that scale. We present optical data from a variety of nanowire-based structures using cathodoluminescence imaging and spectroscopy. One important feature of nanowires is the stacking sequence of the crystal, either zincblede, wurtzite or a mix of the two. We show that this has an impact on the optical properties. In radial quantum wells, the thickness can be controlled on a monolayer level, in the case of flat side facets of the nanowires. With rough side facets, the quantum well collapses into quantum dots, as revealed by cathodoluminescence imaging. In order to extend the emission wavelength of light-emitting diodes into the ultraviolet or to cover the whole visible range, we use nanowire-seeded truncated pyramids as bases for these devices, based on either GaInN (visible) and AlGaN (ultraviolet). (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
in
Journal of Microscopy
publisher
Wiley-Blackwell
external identifiers
  • pmid:26372921
  • scopus:84941670258
  • wos:000374333100002
ISSN
0022-2720
DOI
10.1111/jmi.12296
language
English
LU publication?
yes
id
d358229b-2043-4c9b-be21-1980a47ef822 (old id 8039118)
date added to LUP
2015-10-28 21:11:09
date last changed
2017-01-01 05:59:13
@article{d358229b-2043-4c9b-be21-1980a47ef822,
  abstract     = {Nanowires are structures with features on the nanoscale, and it is therefore essential to study their properties on that scale. We present optical data from a variety of nanowire-based structures using cathodoluminescence imaging and spectroscopy. One important feature of nanowires is the stacking sequence of the crystal, either zincblede, wurtzite or a mix of the two. We show that this has an impact on the optical properties. In radial quantum wells, the thickness can be controlled on a monolayer level, in the case of flat side facets of the nanowires. With rough side facets, the quantum well collapses into quantum dots, as revealed by cathodoluminescence imaging. In order to extend the emission wavelength of light-emitting diodes into the ultraviolet or to cover the whole visible range, we use nanowire-seeded truncated pyramids as bases for these devices, based on either GaInN (visible) and AlGaN (ultraviolet).},
  author       = {Gustafsson, Anders},
  issn         = {0022-2720},
  language     = {eng},
  month        = {09},
  publisher    = {Wiley-Blackwell},
  series       = {Journal of Microscopy},
  title        = {Nanowire-based structures for infrared to ultraviolet emitters studied by cathodoluminescence.},
  url          = {http://dx.doi.org/10.1111/jmi.12296},
  year         = {2015},
}