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Carrier Dynamics and Quantum Confinement in type II ZB-WZ InP Nanowire Homostructures

Pemasiri, Kuranananda; Montazeri, Mohammad; Gass, Richard; Smith, Leigh M; Jackson, Howard E; Yarrison-Rice, Jan M; Paiman, Suriati; Gao, Qiang; Jagadish, Chennupati; Zhang, Xin; Zou, Jin; Tan, Hark Hoe

Description

We use time-resolved photoluminescence from single InP nanowires containing both wurtzite (WZ) and zincblende (ZB) crystalline phases to measure the carrier dynamics of quantum confined excitons in a type-ll homostructure. The observed recombination lifetime increases by nearly 2 orders of magnitude from 170 ps for excitons above the conduction and valence band barriers to more than 8400 ps for electrons and holes that are strongly confined in quantum wells defined by monolayer-scale ZB...[Show more]

dc.contributor.authorPemasiri, Kuranananda
dc.contributor.authorMontazeri, Mohammad
dc.contributor.authorGass, Richard
dc.contributor.authorSmith, Leigh M
dc.contributor.authorJackson, Howard E
dc.contributor.authorYarrison-Rice, Jan M
dc.contributor.authorPaiman, Suriati
dc.contributor.authorGao, Qiang
dc.contributor.authorJagadish, Chennupati
dc.contributor.authorZhang, Xin
dc.contributor.authorZou, Jin
dc.contributor.authorTan, Hark Hoe
dc.date.accessioned2015-12-10T22:30:34Z
dc.identifier.issn1530-6984
dc.identifier.urihttp://hdl.handle.net/1885/55146
dc.description.abstractWe use time-resolved photoluminescence from single InP nanowires containing both wurtzite (WZ) and zincblende (ZB) crystalline phases to measure the carrier dynamics of quantum confined excitons in a type-ll homostructure. The observed recombination lifetime increases by nearly 2 orders of magnitude from 170 ps for excitons above the conduction and valence band barriers to more than 8400 ps for electrons and holes that are strongly confined in quantum wells defined by monolayer-scale ZB sections in a predominantly WZ nanowire. A simple computational model, guided by detailed high-resolution transmission electron microscopy measurements from a single nanowire, demonstrates that the dynamics are consistent with the calculated distribution of confined states for the electrons and holes.
dc.publisherAmerican Chemical Society
dc.sourceNano Letters
dc.subjectKeywords: Carrier dynamics; Computational models; Confined excitons; Crystalline phasis; High-resolution transmission electron microscopies; Homostructures; Inp; Orders of magnitudes; Quantum wells; Recombination lifetimes; Single nanowires; Time-resolved photolumi
dc.titleCarrier Dynamics and Quantum Confinement in type II ZB-WZ InP Nanowire Homostructures
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume9
dc.date.issued2009
local.identifier.absfor100708 - Nanomaterials
local.identifier.ariespublicationu4133361xPUB320
local.type.statusPublished Version
local.contributor.affiliationPemasiri, Kuranananda, University of Cincinnati
local.contributor.affiliationMontazeri, Mohammad, University of Cincinnati
local.contributor.affiliationGass, Richard, University of Cincinnati
local.contributor.affiliationSmith, Leigh M , University of Cincinnati
local.contributor.affiliationJackson, Howard E , University of Cincinnati
local.contributor.affiliationYarrison-Rice, Jan M , University of Miami
local.contributor.affiliationPaiman, Suriati, College of Engineering and Computer Science, ANU
local.contributor.affiliationGao, Qiang, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationTan, Hoe Hark, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationJagadish, Chennupati, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationZhang, Xin, University of Queensland
local.contributor.affiliationZou, Jin, University of Queensland
local.description.embargo2037-12-31
local.bibliographicCitation.issue2
local.bibliographicCitation.startpage648
local.bibliographicCitation.lastpage654
local.identifier.doi10.1021/n1802997p
dc.date.updated2016-02-24T10:36:54Z
local.identifier.scopusID2-s2.0-65249152412
local.identifier.thomsonID000263298700024
CollectionsANU Research Publications

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