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Measurements of the band gap of wurtzite InAs1−xPx nanowires using photocurrent spectroscopy

Trägårdh, Johanna LU ; Persson, Ann LU ; Wagner, Jakob LU ; Hessman, Dan LU and Samuelson, Lars LU (2007) In Applied Physics Reviews 101(12).
Abstract
We report measurements of the band gap of InAs1−xPx nanowires having wurtzite crystal structure

as a function of the composition for 0.14<x<0.48. The band gap is measured by photocurrent

spectroscopy on single InAs nanowires with a centrally placed InAs1−xPx segment. The photocurrent

measurements are performed at a temperature of 5 K. The data fit well with a quadratic dependence

of the band gap on the composition. Using a bowing parameter of 0.2 eV the extracted values for

the band gaps are 0.54 eV for InAs and 1.65 eV for InP. These values are larger than the

corresponding zinc blende band gaps. We attribute this increase to the fact that the crystal structure

is... (More)
We report measurements of the band gap of InAs1−xPx nanowires having wurtzite crystal structure

as a function of the composition for 0.14<x<0.48. The band gap is measured by photocurrent

spectroscopy on single InAs nanowires with a centrally placed InAs1−xPx segment. The photocurrent

measurements are performed at a temperature of 5 K. The data fit well with a quadratic dependence

of the band gap on the composition. Using a bowing parameter of 0.2 eV the extracted values for

the band gaps are 0.54 eV for InAs and 1.65 eV for InP. These values are larger than the

corresponding zinc blende band gaps. We attribute this increase to the fact that the crystal structure

is wurtzite rather than zinc blende (Less)
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Contribution to journal
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published
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in
Applied Physics Reviews
volume
101
issue
12
article number
123701
publisher
American Institute of Physics (AIP)
external identifiers
  • wos:000247625700061
  • scopus:34547411978
ISSN
1931-9401
DOI
10.1063/1.2745289
language
English
LU publication?
yes
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The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Solid State Physics (011013006), Polymer and Materials Chemistry (LTH) (011001041)
id
99d6fd40-3b14-4161-8ca0-7dc88e9e3a93 (old id 644174)
date added to LUP
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@article{99d6fd40-3b14-4161-8ca0-7dc88e9e3a93,
  abstract     = {We report measurements of the band gap of InAs1−xPx nanowires having wurtzite crystal structure<br/><br>
as a function of the composition for 0.14&lt;x&lt;0.48. The band gap is measured by photocurrent<br/><br>
spectroscopy on single InAs nanowires with a centrally placed InAs1−xPx segment. The photocurrent<br/><br>
measurements are performed at a temperature of 5 K. The data fit well with a quadratic dependence<br/><br>
of the band gap on the composition. Using a bowing parameter of 0.2 eV the extracted values for<br/><br>
the band gaps are 0.54 eV for InAs and 1.65 eV for InP. These values are larger than the<br/><br>
corresponding zinc blende band gaps. We attribute this increase to the fact that the crystal structure<br/><br>
is wurtzite rather than zinc blende},
  author       = {Trägårdh, Johanna and Persson, Ann and Wagner, Jakob and Hessman, Dan and Samuelson, Lars},
  issn         = {1931-9401},
  language     = {eng},
  number       = {12},
  publisher    = {American Institute of Physics (AIP)},
  series       = {Applied Physics Reviews},
  title        = {Measurements of the band gap of wurtzite InAs1−xPx nanowires using photocurrent spectroscopy},
  url          = {http://dx.doi.org/10.1063/1.2745289},
  doi          = {10.1063/1.2745289},
  volume       = {101},
  year         = {2007},
}