Sala, E.M. orcid.org/0000-0001-8116-8830, Godsland, M., Trapalis, A. orcid.org/0000-0003-4887-7058 et al. (1 more author) (2021) Effect of cap thickness on InAs/InP quantum dots grown by droplet epitaxy in metal–organic vapor phase epitaxy. physica status solidi (RRL) - Rapid Research Letters, 15 (9). 2100283. ISSN 1862-6254
Abstract
InAs quantum dots (QDs) are grown on bare InP(001) via droplet epitaxy (DE) in metal–organic vapor phase epitaxy (MOVPE). Capping layer engineering, used to control QD size and shape, is explored for DE QDs in MOVPE. The method allows for the tuning of the QD emission over a broad range of wavelengths, ranging from the O- to the L-band. The effect of varying the InP capping layer is investigated optically by macro- and micro-photoluminescence (PL, µPL) and morphologically by transmission electron microscopy (TEM). A strong 500 nm blueshift of the QD emission wavelength is observed when the capping layer is reduced from 20 to 8 nm, which is reflected by a clear size reduction of the buried QDs.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2021 The Authors. physica status solidi (RRL) Rapid Research Letters published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, (http://creativecommons.org/licenses/by/4.0/) which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
Keywords: | atomic force microscopy; droplet epitaxy; III–V quantum dots; metal–organic vapor phase epitaxy; photoluminescence |
Dates: |
|
Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL EP/N00726X/1 ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL EP/R03480X/1 INNOVATE UK (TSB) 16512 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 07 Jan 2022 14:16 |
Last Modified: | 07 Jan 2022 14:16 |
Status: | Published |
Publisher: | Wiley |
Refereed: | Yes |
Identification Number: | 10.1002/pssr.202100283 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:182226 |