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Microphotoluminescence studies of tunable wurtzite InAs0.85P0.15 quantum dots embedded in wurtzite InP nanowires

Sköld, Niklas LU ; Pistol, Mats-Erik LU ; Dick Thelander, Kimberly LU ; Pryor, Craig; Wagner, Jakob LU ; Karlsson, Lisa LU and Samuelson, Lars LU (2009) In Physical Review B (Condensed Matter and Materials Physics) 80(4).
Abstract
We have investigated the effects of strong confinement in wurtzite InAs0.85P0.15 quantum dots embedded in wurtzite InP nanowires using microphotoluminescence spectroscopy. Strain-dependent k . p calculations were used to model the quantum dots, and it was found that the electron effective mass was increased by a factor of 2 and the band gap was increased by 190 meV compared to equivalent quantum dots in the zinc-blende polytype. Measurements indicate that there is a relaxation bottleneck giving rise to an anomalous state filling behavior.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review B (Condensed Matter and Materials Physics)
volume
80
issue
4
publisher
American Physical Society
external identifiers
  • wos:000268618100018
  • scopus:69949148475
ISSN
1098-0121
DOI
10.1103/PhysRevB.80.041312
language
English
LU publication?
yes
id
64379b84-7da3-408c-a6d0-5f61c6d17cfa (old id 1459805)
date added to LUP
2009-08-25 15:41:09
date last changed
2017-07-02 03:56:21
@article{64379b84-7da3-408c-a6d0-5f61c6d17cfa,
  abstract     = {We have investigated the effects of strong confinement in wurtzite InAs0.85P0.15 quantum dots embedded in wurtzite InP nanowires using microphotoluminescence spectroscopy. Strain-dependent k . p calculations were used to model the quantum dots, and it was found that the electron effective mass was increased by a factor of 2 and the band gap was increased by 190 meV compared to equivalent quantum dots in the zinc-blende polytype. Measurements indicate that there is a relaxation bottleneck giving rise to an anomalous state filling behavior.},
  articleno    = {041312},
  author       = {Sköld, Niklas and Pistol, Mats-Erik and Dick Thelander, Kimberly and Pryor, Craig and Wagner, Jakob and Karlsson, Lisa and Samuelson, Lars},
  issn         = {1098-0121},
  language     = {eng},
  number       = {4},
  publisher    = {American Physical Society},
  series       = {Physical Review B (Condensed Matter and Materials Physics)},
  title        = {Microphotoluminescence studies of tunable wurtzite InAs0.85P0.15 quantum dots embedded in wurtzite InP nanowires},
  url          = {http://dx.doi.org/10.1103/PhysRevB.80.041312},
  volume       = {80},
  year         = {2009},
}