In-situ observations of nanoscale effects in germanium nanowire growth with ternary eutectic alloys

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dc.contributor.authorBiswas, Subhajit
dc.contributor.authorO'Regan, Colm
dc.contributor.authorMorris, Michael A.
dc.contributor.authorHolmes, Justin D.
dc.contributor.funderScience Foundation Irelanden
dc.date.accessioned2016-02-02T14:58:03Z
dc.date.available2016-02-02T14:58:03Z
dc.date.issued2014-09-05
dc.date.updated2015-01-06T15:23:38Z
dc.description.abstractVapour-liquid-solid (VLS) techniques are popular routes for the scalable synthesis of semiconductor nanowires. In this article, in-situ electron microscopy is used to correlate the equilibrium content of ternary (Au0.75Ag0.25–Ge and Au0.65Ag0.35–Ge) metastable alloys with the kinetics, thermodynamics and diameter of Ge nanowires grown via a VLS mechanism. The shape and geometry of the heterogeneous interfaces between the liquid eutectic and solid Ge nanowires varies as a function of nanowire diameter and eutectic alloy composition. The behaviour of the faceted heterogeneous liquid–solid interface correlates with the growth kinetics of the nanowires, where the main growth facet at the solid nanowire–liquid catalyst drop contact line lengthens for faster nanowire growth kinetics. Pronounced diameter dependent growth kinetics, as inferred from liquid–solid interfacial behaviour, is apparent for the synthesised nanowires. Direct in-situ microscopy observations facilitates the comparison between the nanowire growth behaviour from ternary (Au–Ag–Ge) and binary (Au–Ge) eutectic systems.en
dc.description.sponsorshipScience Foundation Ireland (Grant: 09/IN.1/I2602)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationBISWAS, S., O'REGAN, C., MORRIS, M. A. & HOLMES, J. D. 2015. In-situ Observations of Nanoscale Effects in Germanium Nanowire Growth with Ternary Eutectic Alloys. Small, 11, 103-111. http://dx.doi.org/10.1002/smll.201401240en
dc.identifier.doi10.1002/smll.201401240
dc.identifier.endpage111en
dc.identifier.issn1613-6829
dc.identifier.issued1en
dc.identifier.journaltitleSmallen
dc.identifier.startpage103en
dc.identifier.urihttps://hdl.handle.net/10468/2242
dc.identifier.volume11en
dc.language.isoenen
dc.publisherWiley-VCHen
dc.relation.urihttp://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1613-6829
dc.rights© 2014 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. This is the accepted version of the following article: Biswas, S., O'Regan, C., Morris, M. A. and Holmes, J. D. (2015), In-situ Observations of Nanoscale Effects in Germanium Nanowire Growth with Ternary Eutectic Alloys. Small, 11: 103–111. doi:10.1002/smll.201401240, which has been published in final form at http://dx.doi.org/10.1002/smll.201401240.en
dc.subjectAlloysen
dc.subjectEutecticsen
dc.subjectGermaniumen
dc.subjectGermanium alloysen
dc.subjectGrowth kineticsen
dc.subjectKineticsen
dc.subjectLiquidsen
dc.subjectNanowiresen
dc.subjectSilveren
dc.subjectSilver alloysen
dc.subjectThermodynamicsen
dc.subjectHeterogeneous interfacesen
dc.subjectIn-situ electron microscopyen
dc.subjectIn-situ microscopiesen
dc.subjectIn-situ observationsen
dc.subjectLiquid-solid interfacesen
dc.subjectNanowire growth kineticsen
dc.subjectSemiconductor nanowireen
dc.subjectTernary eutectic alloysen
dc.subjectPhase interfacesen
dc.subjectVLSen
dc.subjectTEMen
dc.titleIn-situ observations of nanoscale effects in germanium nanowire growth with ternary eutectic alloysen
dc.typeArticle (peer-reviewed)en
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