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Size controlled growth onto II-VI nanorods.

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Show simple item record O'Sullivan, Catriona Gunning, Robert D. Barrett, Christopher A. Singh, Ajay Ryan, Kevin M. 2012-02-17T17:10:29Z 2012-02-17T17:10:29Z 2010
dc.description peer-reviewed en_US
dc.description.abstract Gold tip size and multiplicity is controlled in hybrid gold-semiconductor nanorods (CdS-Au, CdSe-Au and CdTe-Au) in fast reaction times of less than 2 minutes by optimising precursor type, concentration, and temperature. Controllable gold tips up to as large as 40 nm on a rod diameter of 7 nm are reported with the tip size shown to be directly related to the redox potentials of the 10 dangling atoms on the nanorod and the gold chloride precursors (mono or trivalent). The preference for symmetric (both ends) over asymmetric (single end) is achieved by simply elevating the reaction temperature to 80ºC without changing the reaction time. TEM and XRD analysis were preformed to verify both the gold nanoparticle size and crystallinity of the hybrid nanostructures. Increased quenching of nanorod emission is observed as the size of the gold tip increases 15 suggesting optimisation of charge transfer between the semiconductor and the metal. en_US
dc.language.iso eng en_US
dc.publisher Royal Society of Chemistry en_US
dc.relation.ispartofseries Journal of Materials Chemistry;20(36), pp. 7875-7880
dc.subject semiconductors en_US
dc.subject nanoparticles en_US
dc.subject nanorods en_US
dc.title Size controlled growth onto II-VI nanorods. en_US
dc.type Journal article
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.type.restriction none en
dc.contributor.sponsor SFI
dc.contributor.sponsor IRCSET
dc.relation.projectid 06/IN.1/I85

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