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

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dc.check.date2018-08-22
dc.check.infoAccess to this article is restricted until 12 months after publication by request of the publisher.en
dc.contributor.authorMoroni, Stefano T.
dc.contributor.authorChung, Tung-Hsun
dc.contributor.authorJuska, Gediminas
dc.contributor.authorGocaliƄska, Agnieszka M.
dc.contributor.authorPelucchi, Emanuele
dc.contributor.funderHigher Education Authorityen
dc.contributor.funderScience Foundation Irelanden
dc.date.accessioned2017-09-12T14:32:11Z
dc.date.available2017-09-12T14:32:11Z
dc.date.issued2017-08-22
dc.date.updated2017-09-12T14:20:38Z
dc.description.abstractWe 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.sponsorshipHigher 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.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationMoroni, 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:10.1063/1.4985259en
dc.identifier.doi10.1063/1.4985259
dc.identifier.endpage83103-5en
dc.identifier.issn0003-6951
dc.identifier.issued8en
dc.identifier.journaltitleApplied Physics Lettersen
dc.identifier.startpage83103-1en
dc.identifier.urihttps://hdl.handle.net/10468/4691
dc.identifier.volume111en
dc.language.isoenen
dc.publisherAIP Publishingen
dc.relation.urihttp://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/10.1063/1.4985259en
dc.subjectQuantum dotsen
dc.subjectLuminescence spectroscopyen
dc.subjectEmission spectraen
dc.subjectDoppler effecten
dc.subjectPolarizationen
dc.subjectExcitonsen
dc.subjectGallium arsenideen
dc.subjectIII-V semiconductorsen
dc.subjectIndium compoundsen
dc.subjectPhotoluminescenceen
dc.subjectRed shiften
dc.subjectSemiconductor quantum dotsen
dc.subjectStatistical analysisen
dc.titleStatistical study of stacked/coupled site-controlled pyramidal quantum dots and their excitonic propertiesen
dc.typeArticle (peer-reviewed)en
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