The University of Southampton
University of Southampton Institutional Repository

Photoluminescence studies of individual and few GaSb/GaAs quantum rings

Photoluminescence studies of individual and few GaSb/GaAs quantum rings
Photoluminescence studies of individual and few GaSb/GaAs quantum rings

We present optical studies of individual and few GaSb quantum rings embedded in a GaAs matrix. Contrary to expectation for type-II confinement, we measure rich spectra containing sharp lines. These lines originate from excitonic recombination and are observed to have resolution-limited full-width at half maximum of 200 μeV. The detail provided by these measurements allows the characteristic type-II blueshift, observed with increasing excitation power, to be studied at the level of individual nanostructures. These findings are in agreement with hole-charging being the origin of the observed blueshift.

2158-3226
1-6
Young, M.P.
875f5c13-6f89-4697-95b7-e26a2c30df1f
Woodhead, C.S.
7a034c66-eefb-4d2a-b6a1-e8e7402076fe
Roberts, J.
025544e9-8197-403c-9fb7-7e0bd5e91c41
Noori, Y.J.
704d0b70-1ea6-4e00-92ce-cc2543087a09
Noble, M.T.
b15ec318-e636-4028-812c-90cb1c8c1be5
Krier, A.
d75a21a9-6160-49ff-9256-76be82e35c42
Smakman, E.P.
c8ea96d0-88c5-4894-a84d-4ee94d928f32
Koenraad, P.M.
321cf469-994c-4f4e-92ce-cb1fd5646a57
Hayne, M.
81a06e97-97c8-420d-99b0-7ce402123586
Young, R.J.
333e90a3-3175-44a6-82ab-f543e6e293db
Young, M.P.
875f5c13-6f89-4697-95b7-e26a2c30df1f
Woodhead, C.S.
7a034c66-eefb-4d2a-b6a1-e8e7402076fe
Roberts, J.
025544e9-8197-403c-9fb7-7e0bd5e91c41
Noori, Y.J.
704d0b70-1ea6-4e00-92ce-cc2543087a09
Noble, M.T.
b15ec318-e636-4028-812c-90cb1c8c1be5
Krier, A.
d75a21a9-6160-49ff-9256-76be82e35c42
Smakman, E.P.
c8ea96d0-88c5-4894-a84d-4ee94d928f32
Koenraad, P.M.
321cf469-994c-4f4e-92ce-cb1fd5646a57
Hayne, M.
81a06e97-97c8-420d-99b0-7ce402123586
Young, R.J.
333e90a3-3175-44a6-82ab-f543e6e293db

Young, M.P., Woodhead, C.S., Roberts, J., Noori, Y.J., Noble, M.T., Krier, A., Smakman, E.P., Koenraad, P.M., Hayne, M. and Young, R.J. (2014) Photoluminescence studies of individual and few GaSb/GaAs quantum rings. AIP Advances, 4 (11), 1-6, [117127]. (doi:10.1063/1.4902177).

Record type: Article

Abstract

We present optical studies of individual and few GaSb quantum rings embedded in a GaAs matrix. Contrary to expectation for type-II confinement, we measure rich spectra containing sharp lines. These lines originate from excitonic recombination and are observed to have resolution-limited full-width at half maximum of 200 μeV. The detail provided by these measurements allows the characteristic type-II blueshift, observed with increasing excitation power, to be studied at the level of individual nanostructures. These findings are in agreement with hole-charging being the origin of the observed blueshift.

Text
1.4902177 - Version of Record
Available under License Creative Commons Attribution.
Download (1MB)

More information

Accepted/In Press date: November 2014
e-pub ahead of print date: 17 November 2014
Published date: November 2014

Identifiers

Local EPrints ID: 425671
URI: http://eprints.soton.ac.uk/id/eprint/425671
ISSN: 2158-3226
PURE UUID: c5d352b2-5d33-48f4-af41-d9a7deb1d719
ORCID for Y.J. Noori: ORCID iD orcid.org/0000-0001-5285-8779

Catalogue record

Date deposited: 31 Oct 2018 17:30
Last modified: 10 Sep 2020 01:50

Export record

Altmetrics

Contributors

Author: M.P. Young
Author: C.S. Woodhead
Author: J. Roberts
Author: Y.J. Noori ORCID iD
Author: M.T. Noble
Author: A. Krier
Author: E.P. Smakman
Author: P.M. Koenraad
Author: M. Hayne
Author: R.J. Young

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×