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Unit cell parameters of wurtzite InP nanowires determined by x-ray diffraction

Kriegner, D.; Wintersberger, E.; Kawaguchi, K.; Wallentin, Jesper LU ; Borgström, Magnus LU and Stangl, J. (2011) In Nanotechnology 22(42).
Abstract
High resolution x-ray diffraction is used to study the structural properties of the wurtzite polytype of InP nanowires. Wurtzite InP nanowires are grown by metal-organic vapor phase epitaxy using S-doping. From the evaluation of the Bragg peak position we determine the lattice parameters of the wurtzite InP nanowires. The unit cell dimensions are found to differ from the ones expected from geometric conversion of the cubic bulk InP lattice constant. The atomic distances along the c direction are increased whereas the atomic spacing in the a direction is reduced in comparison to the corresponding distances in the zinc-blende phase. Using core/shell nanowires with a thin core and thick nominally intrinsic shells we are able to determine the... (More)
High resolution x-ray diffraction is used to study the structural properties of the wurtzite polytype of InP nanowires. Wurtzite InP nanowires are grown by metal-organic vapor phase epitaxy using S-doping. From the evaluation of the Bragg peak position we determine the lattice parameters of the wurtzite InP nanowires. The unit cell dimensions are found to differ from the ones expected from geometric conversion of the cubic bulk InP lattice constant. The atomic distances along the c direction are increased whereas the atomic spacing in the a direction is reduced in comparison to the corresponding distances in the zinc-blende phase. Using core/shell nanowires with a thin core and thick nominally intrinsic shells we are able to determine the lattice parameters of wurtzite InP with a negligible influence of the S-doping due to the much larger volume in the shell. The determined material properties will enable the ab initio calculation of electronic and optical properties of wurtzite InP nanowires. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nanotechnology
volume
22
issue
42
publisher
IOP Publishing
external identifiers
  • wos:000295467800015
  • scopus:80053236586
ISSN
0957-4484
DOI
10.1088/0957-4484/22/42/425704
language
English
LU publication?
yes
id
b5ea1565-8a2f-43fe-a3e1-77141f240357 (old id 2179328)
date added to LUP
2011-10-24 15:58:35
date last changed
2017-10-08 03:11:53
@article{b5ea1565-8a2f-43fe-a3e1-77141f240357,
  abstract     = {High resolution x-ray diffraction is used to study the structural properties of the wurtzite polytype of InP nanowires. Wurtzite InP nanowires are grown by metal-organic vapor phase epitaxy using S-doping. From the evaluation of the Bragg peak position we determine the lattice parameters of the wurtzite InP nanowires. The unit cell dimensions are found to differ from the ones expected from geometric conversion of the cubic bulk InP lattice constant. The atomic distances along the c direction are increased whereas the atomic spacing in the a direction is reduced in comparison to the corresponding distances in the zinc-blende phase. Using core/shell nanowires with a thin core and thick nominally intrinsic shells we are able to determine the lattice parameters of wurtzite InP with a negligible influence of the S-doping due to the much larger volume in the shell. The determined material properties will enable the ab initio calculation of electronic and optical properties of wurtzite InP nanowires.},
  author       = {Kriegner, D. and Wintersberger, E. and Kawaguchi, K. and Wallentin, Jesper and Borgström, Magnus and Stangl, J.},
  issn         = {0957-4484},
  language     = {eng},
  number       = {42},
  publisher    = {IOP Publishing},
  series       = {Nanotechnology},
  title        = {Unit cell parameters of wurtzite InP nanowires determined by x-ray diffraction},
  url          = {http://dx.doi.org/10.1088/0957-4484/22/42/425704},
  volume       = {22},
  year         = {2011},
}