Optical and AFM study of electrostatically assembled films of CdS and ZnS colloid nanoparticles.

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dc.contributor.authorSuryajaya, S.-
dc.contributor.authorNabok, Alexei-
dc.contributor.authorDavis, Frank-
dc.contributor.authorHassan, A.-
dc.contributor.authorHigson, Seamus P. J.-
dc.contributor.authorEvans-Freeman, J.-
dc.date.accessioned2011-10-11T07:31:23Z
dc.date.available2011-10-11T07:31:23Z
dc.date.issued2008-05-30T00:00:00Z-
dc.description.abstractCdS and ZnS semiconducting colloid nanoparticles coated with the organic shell, containing either SO3− or NH2+ groups, were prepared using the aqueous phase synthesis. The multilayer films of CdS (or ZnS) were deposited onto glass, quartz and silicon substrates using the technique of electrostatic self- assembly. The films produced were characterized with UV–vis spectroscopy, spectroscopic ellipsometry and atomic force microscopy. A substantial blue shift of the main absorption band with respect to the bulk materials was found for both CdS and ZnS films. The Efros equation in the effective mass approximation (EMA) theoretical model allowed the evaluation of the nanoparticle radius of 1.8 nm, which corresponds well to the ellipsometry results. AFM shows the formation of larger aggregates of nanoparticles on solid surfaen_UK
dc.identifier.citationS. Suryajaya, A. Nabok, F. Davis, A. Hassan, S.P.J. Higson, J. Evans-Freeman, Optical and AFM study of electrostatically assembled films of CdS and ZnS colloid nanoparticles, Applied Surface Science, Volume 254, Issue 15, 30 May 2008, Pages 4891-4898-
dc.identifier.issn0169-4332-
dc.identifier.urihttp://dx.doi.org/10.1016/j.apsusc.2008.01.134-
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/3195
dc.language.isoen_UK-
dc.publisherElsevier Science B.V., Amsterdam.en_UK
dc.subjectColloid nanoparticlesen_UK
dc.subjectElectrostatic self-assemblyen_UK
dc.subjectQuantum confinementen_UK
dc.subjectEllipsometryen_UK
dc.titleOptical and AFM study of electrostatically assembled films of CdS and ZnS colloid nanoparticles.en_UK
dc.typeArticle-

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