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Type I band alignment in GaAs81Sb19/GaAs core-shell nanowires

Xu, Tao; Wei, M.J.; Capiod, P.; Díaz Álvarez, A.; Han, Xiang-Lei; Troadec, D.; Nys, J.P.; Berthe, M.; Lefebvre, I; Patriarche, G.; Plissard, Sebastien; Caroff, Philippe; Ebert, Ph; Grandidier, B.

Description

The composition and band gap of the shell that formed during the growth of axial GaAs/GaAs<inf>81</inf>Sb<inf>19</inf>/ GaAs heterostructure nanowires have been investigated by transmission electron microscopy combined with energy dispersion spectroscopy, scanning tunneling spectroscopy, and density functional theory calculations. On the GaAs<inf>81</inf>Sb<inf>19</inf> intermediate segment, the shell is found to be free of Sb (pure GaAs shell) and transparent to the tunneling electrons,...[Show more]

dc.contributor.authorXu, Tao
dc.contributor.authorWei, M.J.
dc.contributor.authorCapiod, P.
dc.contributor.authorDíaz Álvarez, A.
dc.contributor.authorHan, Xiang-Lei
dc.contributor.authorTroadec, D.
dc.contributor.authorNys, J.P.
dc.contributor.authorBerthe, M.
dc.contributor.authorLefebvre, I
dc.contributor.authorPatriarche, G.
dc.contributor.authorPlissard, Sebastien
dc.contributor.authorCaroff, Philippe
dc.contributor.authorEbert, Ph
dc.contributor.authorGrandidier, B.
dc.date.accessioned2015-12-13T22:37:39Z
dc.identifier.issn0003-6951
dc.identifier.urihttp://hdl.handle.net/1885/77189
dc.description.abstractThe composition and band gap of the shell that formed during the growth of axial GaAs/GaAs<inf>81</inf>Sb<inf>19</inf>/ GaAs heterostructure nanowires have been investigated by transmission electron microscopy combined with energy dispersion spectroscopy, scanning tunneling spectroscopy, and density functional theory calculations. On the GaAs<inf>81</inf>Sb<inf>19</inf> intermediate segment, the shell is found to be free of Sb (pure GaAs shell) and transparent to the tunneling electrons, despite the (110) biaxial strain that affects its band gap. As a result, a direct measurement of the core band gap allows the quantitative determination of the band offset between the GaAs<inf>81</inf>Sb<inf>19</inf> core and the GaAs shell and identifies it as a type I band alignment.
dc.publisherAmerican Institute of Physics (AIP)
dc.rightsAuthor/s retain copyright
dc.sourceApplied Physics Letters
dc.titleType I band alignment in GaAs<inf>81</inf>Sb<inf>19</inf>/GaAs core-shell nanowires
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume107
dc.date.issued2015
local.identifier.absfor020504 - Photonics, Optoelectronics and Optical Communications
local.identifier.absfor091203 - Compound Semiconductors
local.identifier.absfor100706 - Nanofabrication, Growth and Self Assembly
local.identifier.ariespublicationU3488905xPUB6082
local.type.statusPublished Version
local.contributor.affiliationXu, Tao, Institut d’Electronique, de Microelectronique et de Nanotechnologie
local.contributor.affiliationWei, M.J., Shanghai University
local.contributor.affiliationCapiod, P., UMR National Center for Scientific Research
local.contributor.affiliationDíaz Álvarez, A., CNRS
local.contributor.affiliationHan, Xiang-Lei, UMR CNRS
local.contributor.affiliationTroadec, D., CRNS, UMR
local.contributor.affiliationNys, J.P., UMR National Center for Scientific Research
local.contributor.affiliationBerthe, M., UMR National Center for Scientific Research
local.contributor.affiliationLefebvre, I, CRNS, UMR
local.contributor.affiliationPatriarche, G., Centre National de la Recherche Scientifique (National Center for Scientific Research)
local.contributor.affiliationPlissard, Sebastien, Institut d’Electronique, de Microelectronique et de Nanotechnologie
local.contributor.affiliationCaroff, Philippe, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationEbert, Ph, Peter Grunberg Institut
local.contributor.affiliationGrandidier, B., UMR National Center for Scientific Research
local.bibliographicCitation.issue11
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage5
local.identifier.doi10.1063/1.4930991
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
dc.date.updated2015-12-11T09:37:34Z
local.identifier.scopusID2-s2.0-84941916074
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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