Manipulating the growth kinetics of vapor-liquid-solid propagated Ge nanowires

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dc.contributor.author Biswas, Subhajit
dc.contributor.author O'Regan, Colm
dc.contributor.author Petkov, Nikolay
dc.contributor.author Morris, Michael A.
dc.contributor.author Holmes, Justin D.
dc.date.accessioned 2014-01-30T11:52:03Z
dc.date.available 2014-08-06T04:00:05Z
dc.date.issued 2013-09
dc.identifier.citation BISWAS, S., O’REGAN, C., PETKOV, N., MORRIS, M. A. & HOLMES, J. D. 2013. Manipulating the Growth Kinetics of Vapor–Liquid–Solid Propagated Ge Nanowires. Nano Letters, 13, 4044-4052. 10.1021/nl401250x en
dc.identifier.volume 13 en
dc.identifier.issued 9 en
dc.identifier.startpage 4044 en
dc.identifier.endpage 4052 en
dc.identifier.issn 1530-6984
dc.identifier.uri http://hdl.handle.net/10468/1351
dc.identifier.doi 10.1021/nl401250x
dc.description.abstract This article describes an innovative approach in which bimetallic alloy seeds of AuxAg1–x are used to enhance the growth kinetics of Ge nanowires, via a vapor–liquid–solid (VLS) growth technique. The decreased equilibrium concentration and increased supersaturation of Ge in the liquid alloy seeds, compared to pure Au seeds, results in favorable growth kinetics and the realization of high-aspect ratio millimeter-long Ge nanowires. Also detailed is the manifestation of the Gibbs-Thompson effect resulting in diameter-dependent nanowire growth rates as a function of the Au–Ag–Ge eutectic composition. Significantly, AuxAg1–x alloy seeds lower the critical diameter of the Ge nanowires in this liquid-seeded growth approach. In situ TEM heating experiments established the correlation between the growth kinetics and equilibrium eutectic compositions in the ternary growth systems. The fundamental insights of nanowire growth demonstrated with the ternary eutectic alloys opens up opportunities to engineer the aspect ratio and morphology of a range of semiconductor nanowires. en
dc.description.sponsorship Science Foundation Ireland (Grant 09/IN.1/I2602); Higher Education Authority (Program for Research in Third Level Institutions (2007-2011) via the INSPIRE) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Chemical Society en
dc.relation.uri http://pubs.acs.org/doi/abs/10.1021/nl401250x
dc.rights © 2013, American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Nano Letters, copyright © American Chemical Society after peer review and technical editing by the publisher.To access the final edited and published work see http://pubs.acs.org/doi/abs/10.1021/nl401250x en
dc.subject Germanium en
dc.subject Nanowire en
dc.subject Silver en
dc.subject Gold en
dc.subject Nanoparticle en
dc.subject Supersaturation en
dc.subject Vapor−liquid−solid growth en
dc.subject Gibbs-Thompson effect en
dc.title Manipulating the growth kinetics of vapor-liquid-solid propagated Ge nanowires en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Justin D. Holmes, Chemistry, University College Cork, Cork, Ireland. +353-21-490-3000 Email: j.holmes@ucc.ie en
dc.internal.availability Full text available en
dc.date.updated 2013-09-12T07:25:30Z
dc.description.version Accepted Version en
dc.internal.rssid 229379094
dc.contributor.funder Higher Education Authority en
dc.contributor.funder Science Foundation Ireland en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Nano Letters en
dc.internal.copyrightchecked No. !!CORA!! ACS permitted archiving where funder mandate exists. SFI mandate. 12 month embargo. en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress j.holmes@ucc.ie en


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