Diameter controlled germanium nanowires with lamellar twinning and polytypes

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dc.contributor.authorBiswas, Subhajit
dc.contributor.authorDoherty, Jessica
dc.contributor.authorMajumdar, Dipanwita
dc.contributor.authorGhoshal, Tandra
dc.contributor.authorRahme, Kamil
dc.contributor.authorConroy, Michele
dc.contributor.authorSingha, Achintya
dc.contributor.authorMorris, Michael A.
dc.contributor.authorHolmes, Justin D.
dc.contributor.funderScience Foundation Irelanden
dc.date.accessioned2016-01-28T12:35:19Z
dc.date.available2016-04-16T04:00:06Z
dc.date.issued2015-04-16
dc.date.updated2015-05-14T18:18:15Z
dc.description.abstractOne-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.sponsorshipScience Foundation Ireland (SFI grant no. 09/IN.1/I2602)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationBISWAS, 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.5b00697en
dc.identifier.doi10.1021/acs.chemmater.5b00697
dc.identifier.endpage3416en
dc.identifier.issn0897-4756
dc.identifier.issued9en
dc.identifier.journaltitleChemistry of Materialsen
dc.identifier.startpage3408en
dc.identifier.urihttps://hdl.handle.net/10468/2226
dc.identifier.volume27en
dc.language.isoenen
dc.publisherAmerican Chemical Societyen
dc.relation.urihttp://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.5b00697en
dc.subjectAgglomerationen
dc.subjectCatalystsen
dc.subjectChemical vapor depositionen
dc.subjectGermaniumen
dc.subjectIron oxidesen
dc.subjectMagnetiteen
dc.subjectMagnetite nanoparticlesen
dc.subjectMetal nanoparticlesen
dc.subjectNanoparticlesen
dc.subjectNanostructured materialsen
dc.subjectNanostructuresen
dc.subjectNanowiresen
dc.subjectControllable morphologyen
dc.subjectGermanium nanowiresen
dc.subjectGermanium nanowiresen
dc.subjectLiquid injectionsen
dc.subjectMultiple layersen
dc.subjectNanowire devicesen
dc.subjectNanowire growthen
dc.subjectOne-dimensional nanostructureen
dc.subjectProcess controlen
dc.titleDiameter controlled germanium nanowires with lamellar twinning and polytypesen
dc.typeArticle (peer-reviewed)en
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