Radiative recombination of confined electrons at the MgZnO/ZnO heterojunction interface

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dc.contributor.authorChoi, Sumin
dc.contributor.authorRogers, David J.
dc.contributor.authorSandana, Eric V.
dc.contributor.authorBove, Philippe
dc.contributor.authorTeherani, Ferechteh H.
dc.contributor.authorNenstiel, Christian
dc.contributor.authorHoffmann, Axel
dc.contributor.authorMcClintock, Ryan
dc.contributor.authorRazeghi, Manijeh
dc.contributor.authorLook, David
dc.contributor.authorGentle, Angus
dc.contributor.authorPhillips, Matthew R.
dc.contributor.authorTon-That, Cuong
dc.date.accessioned2020-11-19T09:32:54Z
dc.date.available2020-11-19T09:32:54Z
dc.date.issued2017-08-07
dc.description.abstractWe investigate the optical signature of the interface in a single MgZnO/ZnO heterojunction, which exhibits two orders of magnitude lower resistivity and 10 times higher electron mobility compared with the MgZnO/Al2O3 film grown under the same conditions. These impressive transport properties are attributed to increased mobility of electrons at the MgZnO/ZnO heterojunction interface. Depth-resolved cathodoluminescence and photoluminescence studies reveal a 3.2 eV H-band optical emission from the heterointerface, which exhibits excitonic properties and a localization energy of 19.6 meV. The emission is attributed to band-bending due to the polarization discontinuity at the interface, which leads to formation of a triangular quantum well and localized excitons by electrostatic coupling.en
dc.identifier.eissn2045-2322
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/12022
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-10902
dc.language.isoenen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subject.ddc530 Physiken
dc.subject.otherconductivityen
dc.subject.otherMgZnO/ZnO heterointerfaceen
dc.subject.otherluminescenceen
dc.subject.otherelectron mobilityen
dc.titleRadiative recombination of confined electrons at the MgZnO/ZnO heterojunction interfaceen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.articlenumber7457
dcterms.bibliographicCitation.doi10.1038/s41598-017-07568-z
dcterms.bibliographicCitation.journaltitleScientific Reportsen
dcterms.bibliographicCitation.originalpublishernameNature Publishing Groupen
dcterms.bibliographicCitation.originalpublisherplaceLondonen
dcterms.bibliographicCitation.volume7
tub.accessrights.dnbfree
tub.affiliationFak. 2 Mathematik und Naturwissenschaften::Inst. Festkörperphysikde
tub.affiliation.facultyFak. 2 Mathematik und Naturwissenschaftende
tub.affiliation.instituteInst. Festkörperphysikde
tub.publisher.universityorinstitutionTechnische Universität Berlinde

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