Surfactant-mediated variation of band-edge emission in CdS nanocomposites

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dc.contributor.author O'Dwyer, Colm
dc.contributor.author Lavayen, Vladimir
dc.contributor.author Mirabal, Neisy
dc.contributor.author Santa-Ana, María A.
dc.contributor.author Benavente, Eglantina
dc.contributor.author Ormazabal, S.
dc.contributor.author Gonzalez, Guillermo
dc.contributor.author Lopez, Z.
dc.contributor.author Schöps, O.
dc.contributor.author Woggon, U.
dc.contributor.author Sotomayor Torres, Clivia M.
dc.date.accessioned 2016-07-07T13:50:53Z
dc.date.available 2016-07-07T13:50:53Z
dc.date.issued 2007-08-03
dc.identifier.citation O'Dwyer, C., Lavayen, V., Mirabal, N., Santa Ana, M. A., Benavente, E., Ormazabal, S., Gonzalez, G., Lopez, Z., Schöps, O., Woggon, U. and Sotomayor Torres, C. M. (2007) 'Surfactant-mediated variation of band-edge emission in CdS nanocomposites', Photonics and Nanostructures - Fundamentals and Applications, 5(2-3), pp. 45-52. http://www.sciencedirect.com/science/article/pii/S1569441007000284 en
dc.identifier.volume 5 en
dc.identifier.issued 2-3 en
dc.identifier.startpage 45 en
dc.identifier.endpage 52 en
dc.identifier.uri http://hdl.handle.net/10468/2836
dc.description.abstract The optical-structural characteristics of the direct optical band-gap semiconducting series of surfactant template-mediated laminar (CdS)x(CdCl2)y(CnH2n+4N)z nanocomposites are reported. X-ray diffraction measurements of the nanocomposites exhibited interlaminar distances in the range 2.9-3.6 nm with observations of eighth order {0 0 l} diffraction planes indicative of a high degree of laminarity and crystallographic order. Diffuse reflectance measurements have determined that the profile of their emission spectrum is that of a direct band-gap with absorption edges in the range 2.11-2.40 eV, depending on the CdS mole fraction in the nanocomposite. Photoluminescence (PL) excitation and time-resolved PL spectroscopies give an estimate of the maximum relative absorbance of the nanocomposites at ∼420 nm while the minimum was observed at ∼560 nm. The main emission was observed at ∼700 nm with emission from doubly ionized sulphur vacancies observed at ∼615 nm at room temperature. The CdS-containing nanocomposite is thus a surfactant-mediated modular system with variable band-gap energy emission. en
dc.description.sponsorship European Commission (Project Ph OREMOST (FP6/2003/IST/2-511616)); Science Foundation Ireland (SFI Investigator Award 02/IN.1/172); Fondo Nacional de Desarrollo Científico y Tecnológico, Chile (FONDECyT Grants 1050344, 1030102, and 7050081.) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Elsevier en
dc.rights © 2007 Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license. en
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/ en
dc.subject Cadmium sulphide en
dc.subject Scanning electron microscopy en
dc.subject Photoluminescence en
dc.subject Optical properties en
dc.subject Nanostructures en
dc.title Surfactant-mediated variation of band-edge emission in CdS nanocomposites en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Colm O'Dwyer, Chemistry, University College Cork, Cork, Ireland. +353-21-490-3000 Email: c.odwyer@ucc.ie en
dc.internal.availability Full text available en
dc.date.updated 2012-11-29T20:58:05Z
dc.description.version Accepted Version en
dc.internal.rssid 162343171
dc.contributor.funder Science Foundation Ireland en
dc.contributor.funder European Commission en
dc.contributor.funder en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Photonics and Nanostructures - Fundamentals and Applications en
dc.internal.copyrightchecked No. !!CORA!! en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress c.odwyer@ucc.ie en


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© 2007 Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license. Except where otherwise noted, this item's license is described as © 2007 Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.
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