Visualising discrete structural transformations in germanium nanowires during ion beam irradiation and subsequent annealing

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dc.contributor.authorKelly, Róisín A.
dc.contributor.authorHolmes, Justin D.
dc.contributor.authorPetkov, Nikolay
dc.contributor.funderScience Foundation Irelanden
dc.date.accessioned2016-02-04T15:02:29Z
dc.date.available2016-02-04T15:02:29Z
dc.date.issued2014-09-18
dc.date.updated2014-10-21T08:33:23Z
dc.description.abstractIn this article we detail the application of electron microscopy to visualise discrete structural transitions incurring in single crystalline Ge nanowires upon Ga-ion irradiation and subsequent thermal annealing. Sequences of images for nanowires of varying diameters subjected to an incremental increase of the Ga-ion dose were obtained. Intricate transformations dictated by a nanowire's geometry indicate unusual distribution of the cascade recoils in the nanowire volume, in comparison to planar substrates. Following irradiation, the same nanowires were annealed in the TEM and corresponding crystal recovery followed in situ. Visualising the recrystallisation process, we establish that full recovery of defect-free nanowires is difficult to obtain due to defect nucleation and growth. Our findings will have large implications in designing ion beam doping of Ge nanowires for electronic devices but also for other devices that use single crystalline nanostructured Ge materials such as thin membranes, nanoparticles and nanorods.en
dc.description.sponsorshipScience Foundation Ireland (SFI grants: 09/SIRG/I1623 and 09/IN.1/I2602).en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationKELLY, R. A., HOLMES, J. D. & PETKOV, N. 2014. Visualising discrete structural transformations in germanium nanowires during ion beam irradiation and subsequent annealing. Nanoscale, 6, 12890-12897. http://dx.doi.org/10.1039/C4NR04513Ken
dc.identifier.doi10.1039/c4nr04513k
dc.identifier.endpage12897en
dc.identifier.issn2040-3364
dc.identifier.issued21en
dc.identifier.journaltitleNanoscaleen
dc.identifier.startpage12890en
dc.identifier.urihttps://hdl.handle.net/10468/2252
dc.identifier.volume6en
dc.language.isoenen
dc.publisherRoyal Society of Chemistryen
dc.relation.urihttp://pubs.rsc.org/en/journals/journalissues/nr#!recentarticles&all
dc.rights© The Royal Society of Chemistry 2014. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Nanoscale, copyright © Royal Society of Chemistry. To access the final edited and published work see http://pubs.rsc.org/en/content/articlepdf/2014/nr/c4nr04513ken
dc.subjectGermanium nanowiresen
dc.subjectIon beam irradiationen
dc.subjectStructural transformationen
dc.subjectMobility Ge-channelen
dc.subjectSilicon nanowiresen
dc.subjectPlasma nitridationen
dc.subjectImplanted siliconen
dc.subjectRecrystallizationen
dc.subjectAmorphizationen
dc.subjectDielectricsen
dc.subjectTransistorsen
dc.subjectOxidesen
dc.titleVisualising discrete structural transformations in germanium nanowires during ion beam irradiation and subsequent annealingen
dc.typeArticle (peer-reviewed)en
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