Coulomb effect inhibiting spontaneous emission in charged quantum dot

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dc.contributor.authorGradkowski, Kamil
dc.contributor.authorOchalski, Tomasz J.
dc.contributor.authorPavarelli, Nicola
dc.contributor.authorWilliams, David P.
dc.contributor.authorHuyet, Guillaume
dc.contributor.authorLiang, Baolai
dc.contributor.authorHuffaker, Diana L.
dc.contributor.funderScience Foundation Ireland
dc.contributor.funderHigher Education Authority
dc.contributor.funderAir Force Office of Scientific Research
dc.contributor.funderU.S. Department of Defense
dc.contributor.funderFP7 People: Marie-Curie Actions
dc.date.accessioned2017-07-28T11:04:42Z
dc.date.available2017-07-28T11:04:42Z
dc.date.issued2010
dc.description.abstractWe investigate the emission dynamics of InAs/GaAs quantum dots (QDs) coupled to an InGaAs quantum well in a tunnel injection scheme by means of time-resolved photoluminescence. Under high-power excitation we observe a redshift in the QD emission of the order of 20 meV. The optical transition intensity shows a complex evolution, where an initial plateau phase is followed by an increase in intensity before a single-exponential decay. We attribute this behavior to the Coulomb interactions between the carriers in a charged QD and corroborate the experimental results with both a rate equation model and self-consistent eight-band k.p calculations. (C) 2010 American Institute of Physics. (doi:10.1063/1.3484143)en
dc.description.sponsorshipScience Foundation Ireland (Contract Nos. 06/RFP/ENE014 and 07/IN.1/I929); European Commission (Marie Curie Actions Contract No. 041985); Higher Education Authority (under the framework of the INSPIRE programme, funded by the Irish Government’s Programme for Research in Third Level Institutions, Cycle 4, National Development Plan 2007-2013); Air Force Office of Scientific Research (AFOSR Grant No. FA 9550-08-1-0198); U.S. Department of Defense (DoD Grant No. NSS-EFF N00244-09-1-0091)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid91105
dc.identifier.citationGradkowski, K., Ochalski, T. J., Pavarelli, N., Williams, D. P., Huyet, G., Liang, B. and Huffaker, D. L. (2010) 'Coulomb effect inhibiting spontaneous emission in charged quantum dot', Applied Physics Letters, 97(9), pp. 091105. doi: 10.1063/1.3484143en
dc.identifier.doi10.1063/1.3484143
dc.identifier.endpage3
dc.identifier.issn0003-6951
dc.identifier.issn1077-3118
dc.identifier.issued9
dc.identifier.journaltitleApplied Physics Lettersen
dc.identifier.startpage1
dc.identifier.urihttps://hdl.handle.net/10468/4334
dc.identifier.volume97
dc.language.isoenen
dc.publisherAIP Publishingen
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Research Frontiers Programme (RFP)/06/RFP/ENE014/IE/Next Generation Quantum Dot Materials and Devices/
dc.relation.urihttp://aip.scitation.org/doi/abs/10.1063/1.3484143
dc.rights© 2010 American Institute of Physics.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 Gradkowski, K., Ochalski, T. J., Pavarelli, N., Williams, D. P., Huyet, G., Liang, B. and Huffaker, D. L. (2010) 'Coulomb effect inhibiting spontaneous emission in charged quantum dot', Applied Physics Letters, 97(9), pp. 091105 and may be found at http://aip.scitation.org/doi/abs/10.1063/1.3484143en
dc.subjectQuantum dotsen
dc.subjectIII-V semiconductors|\ Quantum wellsen
dc.subjectRed shiften
dc.subjectPhotoluminescenceen
dc.titleCoulomb effect inhibiting spontaneous emission in charged quantum doten
dc.typeArticle (peer-reviewed)en
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