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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)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Physics Reviews
volume
101
issue
12
publisher
American Institute of Physics
external identifiers
  • wos:000247625700061
  • scopus:34547411978
ISSN
0021-8979
DOI
10.1063/1.2745289
language
English
LU publication?
yes
id
99d6fd40-3b14-4161-8ca0-7dc88e9e3a93 (old id 644174)
date added to LUP
2007-12-03 16:47:46
date last changed
2017-07-23 03:43:57
@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},
  articleno    = {123701},
  author       = {Trägårdh, Johanna and Persson, Ann and Wagner, Jakob and Hessman, Dan and Samuelson, Lars},
  issn         = {0021-8979},
  language     = {eng},
  number       = {12},
  publisher    = {American Institute of Physics},
  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},
  volume       = {101},
  year         = {2007},
}