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Low-temperature cathodoluminescence studies of GaAs nanowires in the SEM

Gustafsson, Anders LU ; Sköld, Niklas LU ; Bolinsson, Jessica LU ; Trägårdh, Johanna LU and Samuelson, Lars LU (2010) In Journal of Physics, Conference Series 241.
Abstract
We present data from cathodoluminescence (CL) studies of nanowires (NWs) grown from size-selected gold particles using metal-organic chemical vapour deposition. The NWs in this study all have a GaAs core and are surrounded by a shell of either AlGaAs or GaInP. The spatially and spectrally resolved CL studies were performed in a scanning electron microscope, in a temperature range of 4–300 K. The NWs were studied as-grown on their substrates in side view or transferred to Si substrates. We present data from single NWs, showing that the homogeneity of the emission is influenced by the growth conditions. A general observation is that the emission is much stronger, and more well-defined from the upper part of the NW. The shell emission varies... (More)
We present data from cathodoluminescence (CL) studies of nanowires (NWs) grown from size-selected gold particles using metal-organic chemical vapour deposition. The NWs in this study all have a GaAs core and are surrounded by a shell of either AlGaAs or GaInP. The spatially and spectrally resolved CL studies were performed in a scanning electron microscope, in a temperature range of 4–300 K. The NWs were studied as-grown on their substrates in side view or transferred to Si substrates. We present data from single NWs, showing that the homogeneity of the emission is influenced by the growth conditions. A general observation is that the emission is much stronger, and more well-defined from the upper part of the NW. The shell emission varies in emission energy and spatial origin in an irregular fashion, probably linked to compositional variations in the shell. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Condensed matter: electrical, interfaces and thin films Nanoscale science and low-D systems, magnetic and optical Surfaces
in
Journal of Physics, Conference Series
volume
241
publisher
IOP Publishing
external identifiers
  • wos:000287783500085
ISSN
1742-6596
DOI
10.1088/1742-6596/241/1/012085
language
English
LU publication?
yes
id
db996559-7320-4182-9b46-f26de780f3d0 (old id 1709947)
date added to LUP
2010-10-28 15:02:49
date last changed
2018-05-29 12:16:49
@article{db996559-7320-4182-9b46-f26de780f3d0,
  abstract     = {We present data from cathodoluminescence (CL) studies of nanowires (NWs) grown from size-selected gold particles using metal-organic chemical vapour deposition. The NWs in this study all have a GaAs core and are surrounded by a shell of either AlGaAs or GaInP. The spatially and spectrally resolved CL studies were performed in a scanning electron microscope, in a temperature range of 4–300 K. The NWs were studied as-grown on their substrates in side view or transferred to Si substrates. We present data from single NWs, showing that the homogeneity of the emission is influenced by the growth conditions. A general observation is that the emission is much stronger, and more well-defined from the upper part of the NW. The shell emission varies in emission energy and spatial origin in an irregular fashion, probably linked to compositional variations in the shell.},
  articleno    = {012085},
  author       = {Gustafsson, Anders and Sköld, Niklas and Bolinsson, Jessica and Trägårdh, Johanna and Samuelson, Lars},
  issn         = {1742-6596},
  keyword      = {Condensed matter: electrical,interfaces and thin films
Nanoscale science and low-D systems,magnetic and optical
Surfaces},
  language     = {eng},
  publisher    = {IOP Publishing},
  series       = {Journal of Physics, Conference Series},
  title        = {Low-temperature cathodoluminescence studies of GaAs nanowires in the SEM},
  url          = {http://dx.doi.org/10.1088/1742-6596/241/1/012085},
  volume       = {241},
  year         = {2010},
}