Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/17458
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dc.contributor.authorKennedy, OW-
dc.contributor.authorWhite, ER-
dc.contributor.authorHowkins, A-
dc.contributor.authorWilliams, CK-
dc.contributor.authorBoyd, IW-
dc.contributor.authorWarburton, PA-
dc.contributor.authorShaffer, MSP-
dc.date.accessioned2019-02-05T12:47:54Z-
dc.date.available2019-01-07-
dc.date.available2019-02-05T12:47:54Z-
dc.date.issued2019-01-07-
dc.identifier.citationJournal of Physical Chemistry Letters, 2019, 10(3): pp. 386 - 392en_US
dc.identifier.issn1948-7185-
dc.identifier.urihttps://bura.brunel.ac.uk/handle/2438/17458-
dc.descriptionThe Supporting Information is available free of charge on the ACS Publications website at DOI: 10.1021/acs.jpclett.8b03286.-
dc.description.abstractIn semiconductor nanowires, understanding both the sources of luminescence (excitonic recombination, defects, etc.) and the distribution of luminescent centers (be they uniformly distributed, or concentrated at structural defects or at the surface) is important for synthesis and applications. We develop scanning transmission electron microscopy−cathodoluminescence (STEM-CL) measurements, allowing the structure and cathodoluminescence (CL) of single ZnO nanowires to be mapped at high resolution. Using a CL pixel resolution of 10 nm, variations of the CL spectra within such nanowires in the direction perpendicular to the nanowire growth axis are identified for the first time. By comparing the local CL spectra with the bulk photoluminescence spectra, the CL spectral features are assigned to internal and surface defect structures. Hyperspectral CL maps are deconvolved to enable characteristic spectral features to be spatially correlated with structural features within single nanowires. We have used these maps to show that the spatial distribution of these defects correlates well with regions that show an increased rate of nonradiative transitions.en_US
dc.format.extent386 - 392-
dc.language.isoenen_US
dc.publisherAmerican Chemical Societyen_US
dc.titleMapping the Origins of Luminescence in ZnO Nanowires by STEM-CLen_US
dc.typeArticleen_US
dc.identifier.doihttps://doi.org/10.1021/acs.jpclett.8b03286-
dc.relation.isPartOfJournal of Physical Chemistry Letters-
pubs.publication-statusPu=blished-
pubs.volume10-
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