Diameter controlled germanium nanowires with lamellar twinning and polytypes

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dc.contributor.author Biswas, Subhajit
dc.contributor.author Doherty, Jessica
dc.contributor.author Majumdar, Dipanwita
dc.contributor.author Ghoshal, Tandra
dc.contributor.author Rahme, Kamil
dc.contributor.author Conroy, Michele
dc.contributor.author Singha, Achintya
dc.contributor.author Morris, Michael A.
dc.contributor.author Holmes, Justin D.
dc.date.accessioned 2016-01-28T12:35:19Z
dc.date.available 2016-04-16T04:00:06Z
dc.date.issued 2015-04-16
dc.identifier.citation BISWAS, S., DOHERTY, J., MAJUMDAR, D., GHOSHAL, T., RAHME, K., CONROY, M., SINGHA, A., MORRIS, M. A. & HOLMES, J. D. 2015. Diameter-Controlled Germanium Nanowires with Lamellar Twinning and Polytypes. Chemistry of Materials, 27, 3408-3416. http://dx.doi.org/10.1021/acs.chemmater.5b00697 en
dc.identifier.volume 27 en
dc.identifier.issued 9 en
dc.identifier.startpage 3408 en
dc.identifier.endpage 3416 en
dc.identifier.issn 0897-4756
dc.identifier.uri http://hdl.handle.net/10468/2226
dc.identifier.doi 10.1021/acs.chemmater.5b00697
dc.description.abstract One-dimensional nanostructures with controllable morphologies and defects are appealing for use in nanowire devices. This paper details the influence of colloidal magnetite iron oxide nanoparticle seeds to regulate the radial dimension and twin boundary formation in Ge nanowires grown through a liquid-injection chemical vapor deposition process. Control over the mean nanowire diameter, even in the sub-10 nm regime, was achieved due to the minimal expansion and aggregation of iron oxide nanoparticles during the growth process. The uncommon occurrence of heterogeneously distributed multiple layer {111} twins, directed perpendicular to the nanowire growth axis, were also observed in 〈111〉-directed Ge nanowires, especially those synthesized from patterned hemispherical Fe3O4 nanodot catalysts. Consecutive twin planes along 〈111〉-oriented nanowires resulted in a local phase transformation from 3C diamond cubic to hexagonal 4H allotrope. Localized polytypic crystal phase heretostructures were formed along 〈111〉-oriented Ge nanowire using magnetite nanodot catalysts. en
dc.description.sponsorship Science Foundation Ireland (SFI grant no. 09/IN.1/I2602) 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/journal/cmatex
dc.rights © American Chemical Society, 2015. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Chemistry of Materials, copyright © American Chemical Society after peer review and technical editing by the publisher. doi: 10.1021/acs.chemmater.5b00697 en
dc.subject Agglomeration en
dc.subject Catalysts en
dc.subject Chemical vapor deposition en
dc.subject Germanium en
dc.subject Iron oxides en
dc.subject Magnetite en
dc.subject Magnetite nanoparticles en
dc.subject Metal nanoparticles en
dc.subject Nanoparticles en
dc.subject Nanostructured materials en
dc.subject Nanostructures en
dc.subject Nanowires en
dc.subject Controllable morphology en
dc.subject Germanium nanowires en
dc.subject Germanium nanowires en
dc.subject Liquid injections en
dc.subject Multiple layers en
dc.subject Nanowire devices en
dc.subject Nanowire growth en
dc.subject One-dimensional nanostructure en
dc.subject Process control en
dc.title Diameter controlled germanium nanowires with lamellar twinning and polytypes 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 2015-05-14T18:18:15Z
dc.description.version Accepted Version en
dc.internal.rssid 301829664
dc.contributor.funder Science Foundation Ireland en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Chemistry of Materials en
dc.internal.copyrightchecked No. !!CORA!! The accepted version may be posted on institutional repository, with a 12 month embargo. http://pubs.acs.org/userimages/ContentEditor/1285231362937/jpa_user_guide.pdf en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress j.holmes@ucc.ie en

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