Carrier dynamics and recombination mechanisms in InP twinning superlattice nanowires

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dc.contributor.authorYuan, Xiaoming
dc.contributor.authorLiu, Kunwu
dc.contributor.authorSkalsky, Stefan
dc.contributor.authorParkinson, Patrick
dc.contributor.authorFang, Long
dc.contributor.authorHe, Jun
dc.contributor.authorTan, Hark Hoe
dc.contributor.authorJagadish, Chennupati
dc.date.accessioned2022-07-15T04:54:15Z
dc.date.available2022-07-15T04:54:15Z
dc.date.issued2020-05-20
dc.date.updated2021-08-01T08:22:41Z
dc.description.abstractNominal dopant-free zinc blende twinning superlattice InP nanowires have been grown with high crystal-quality and taper-free morphology. Here, we demonstrate its superior optical performance and clarify the different carrier recombination mechanisms at different temperatures using a time resolved photoluminescence study. The existence of regular twin planes and lateral overgrowth do not significantly increase the defect density. At room temperature, the as-grown InP nanowires have a strong emission at 1.348 eV and long minority carrier lifetime (∼3 ns). The carrier recombination dynamics is mainly dominated by nonradiative recombination due to surface trapping states; a wet chemical etch to reduce the surface trapping density thus boosts the emission intensity and increases the carrier lifetime to 7.1 ns. This nonradiative recombination mechanism dominates for temperatures above 155 K, and the carrier lifetime decreases with increasing temperature. However, radiative recombination dominates the carrier dynamics at temperature below ∼75 K, and a strong donor-bound exciton emission with a narrow emission linewidth of 4.5 meV is observed. Consequently, carrier lifetime increases with temperature. By revealing carrier recombination mechanisms over the temperature range 10-300 K, we demonstrate the attraction of using InP nanostructure for photonics and optoelectronic applications.en_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.issn1094-4087en_AU
dc.identifier.urihttp://hdl.handle.net/1885/268869
dc.language.isoen_AUen_AU
dc.provenancehttps://opg.optica.org/library/license_v1.cfm#VOR-OA..."An OSA-formatted open access journal article PDF may be governed by the OSA Open Access Publishing Agreement signed by the author and any applicable copyright laws. Authors and readers may use, reuse, and build upon the article, or use it for text or data mining without asking prior permission from the publisher or the Author(s), as long as the purpose is non-commercial and appropriate attribution is maintained." (as at 15.7.2022).en_AU
dc.publisherOptical Society of Americaen_AU
dc.rights© 2020 Optical Society of Americaen_AU
dc.sourceOptics Expressen_AU
dc.titleCarrier dynamics and recombination mechanisms in InP twinning superlattice nanowiresen_AU
dc.typeJournal articleen_AU
dcterms.accessRightsOpen Accessen_AU
dcterms.dateAccepted2020-05-13
local.bibliographicCitation.issue11en_AU
local.bibliographicCitation.lastpage16804en_AU
local.bibliographicCitation.startpage16795en_AU
local.contributor.affiliationYuan, Xiaoming, Central South Universityen_AU
local.contributor.affiliationLiu, Kunwu, Central South Universityen_AU
local.contributor.affiliationSkalsky, Stefan, The University of Manchesteren_AU
local.contributor.affiliationParkinson, Patrick, University of Manchesteren_AU
local.contributor.affiliationFang, Long, Central South Universityen_AU
local.contributor.affiliationHe, Jun, Central South Universityen_AU
local.contributor.affiliationTan, Hoe, College of Science, ANUen_AU
local.contributor.affiliationJagadish, Chennupati, College of Science, ANUen_AU
local.contributor.authoremailu9302338@anu.edu.auen_AU
local.contributor.authoruidTan, Hoe, u9302338en_AU
local.contributor.authoruidJagadish, Chennupati, u9212349en_AU
local.description.notesImported from ARIESen_AU
local.identifier.absfor401809 - Nanophotonicsen_AU
local.identifier.absfor510204 - Photonics, optoelectronics and optical communicationsen_AU
local.identifier.absfor401603 - Compound semiconductorsen_AU
local.identifier.ariespublicationa383154xPUB13559en_AU
local.identifier.citationvolume28en_AU
local.identifier.doi10.1364/OE.388518en_AU
local.identifier.scopusID2-s2.0-85085511579
local.identifier.uidSubmittedBya383154en_AU
local.publisher.urlhttps://opg.optica.org/en_AU
local.type.statusPublished Versionen_AU

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