Statistical study of stacked/coupled site-controlled pyramidal quantum dots and their excitonic properties

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dc.contributor.author Moroni, Stefano T.
dc.contributor.author Chung, Tung-Hsun
dc.contributor.author Juska, Gediminas
dc.contributor.author Gocalińska, Agnieszka M.
dc.contributor.author Pelucchi, Emanuele
dc.date.accessioned 2017-09-12T14:32:11Z
dc.date.available 2017-09-12T14:32:11Z
dc.date.issued 2017-08-22
dc.identifier.citation Moroni, S. T., Chung, T. H., Juska, G., Gocalinska, A. and Pelucchi, E. (2017) 'Statistical study of stacked/coupled site-controlled pyramidal quantum dots and their excitonic properties', Applied Physics Letters, 111(8), 083103 (5 pp). doi:10.1063/1.4985259 en
dc.identifier.volume 111 en
dc.identifier.issued 8 en
dc.identifier.startpage 83103-1 en
dc.identifier.endpage 83103-5 en
dc.identifier.issn 0003-6951
dc.identifier.uri http://hdl.handle.net/10468/4691
dc.identifier.doi 10.1063/1.4985259
dc.description.abstract We report on stacked multiple quantum dots (QDs) formed inside inverted pyramidal recesses, which allow for the precise positioning of the QDs themselves. Specifically, we fabricated double QDs with varying inter-dot distances and ensembles with more than two nominally highly symmetric QDs. For each, the effect of the interaction between QDs is studied by characterizing a large number of QDs through photoluminescence spectroscopy. A clear red-shift of the emission energy is observed together with a change in the orientation of its polarization, suggesting an increasing interaction between the QDs. Finally, we show how stacked QDs can help influencing the charging of the excitonic complexes. en
dc.description.sponsorship Higher Education Authority (Irish Higher Education Authority Program for Research in Third Level Institutions (2007–2011) via the INSPIRE programme); Science Foundation Ireland (Grant Nos. 10/IN.1/I3000, 15/IA/2864, and 12/RC/2276.) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher AIP Publishing en
dc.relation.uri http://aip.scitation.org/doi/abs/10.1063/1.4985259
dc.rights © 2017, AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Appl. Phys. Lett. 111, 083103 (2017) and may be found at http://aip.scitation.org/doi/abs/10.1063/1.4985259 en
dc.subject Quantum dots en
dc.subject Luminescence spectroscopy en
dc.subject Emission spectra en
dc.subject Doppler effect en
dc.subject Polarization en
dc.subject Excitons en
dc.subject Gallium arsenide en
dc.subject III-V semiconductors en
dc.subject Indium compounds en
dc.subject Photoluminescence en
dc.subject Red shift en
dc.subject Semiconductor quantum dots en
dc.subject Statistical analysis en
dc.title Statistical study of stacked/coupled site-controlled pyramidal quantum dots and their excitonic properties en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Emanuele Pelucchi, Tyndall Photonics, University College Cork, Cork, Ireland. +353-21-490-3000 Email: emanuele.pelucchi@tyndall.ie en
dc.internal.availability Full text available en
dc.check.info Access to this article is restricted until 12 months after publication by request of the publisher. en
dc.check.date 2018-08-22
dc.date.updated 2017-09-12T14:20:38Z
dc.description.version Published Version en
dc.internal.rssid 410774595
dc.contributor.funder Higher Education Authority en
dc.contributor.funder Science Foundation Ireland en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Applied Physics Letters en
dc.internal.copyrightchecked No !!CORA!! en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress emanuele.pelucchi@tyndall.ie en


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