Colored Porous Silicon as Support for Plasmonic Nanoparticles

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dc.contributor.ISNI0000 0000 4239 3958 (Chabal, YJ)
dc.contributor.LCNA89624105 (Chabal, YJ)
dc.contributor.authorLublow, M.en_US
dc.contributor.authorKubala, S.en_US
dc.contributor.authorVeyan, Jean-Francoisen_US
dc.contributor.authorChabal, Yves J.en_US
dc.date.accessioned2014-02-13T16:32:39Z
dc.date.available2014-02-13T16:32:39Z
dc.date.created2012-04-16
dc.description.abstractColored nanoporous silicon thin films were employed as dielectric spacing layers for the enhancement of localized surface plasmon (LSP) polaritons. Upon formation of Au nanoparticles (Au-NPs) on these layers, a visible color change is observed due to multiple LSP resonance excitations. Far-field effects were assessed by angle-resolved reflectometry. Resonance enhancements, particularly for s-polarized light, account for the observed color change and are discussed in terms of effective medium and Mie scattering theory. Enhancements of the electric field strengths in the near-field and of the absorption in the substrate were deduced from finite difference time domain calculations and exceed considerably those of the non-porous Au-NP/Si interface. First results of improved photoelectrocatalytic hydrogen evolution at these interfaces are discussed. Samples were prepared by varied procedures of metal assisted etching and dry etching with XeF2. Structural and chemical properties were investigated by scanning electron and atomic force microscopy as well as energy dispersive x-ray analysis.en_US
dc.identifier.bibliographicCitationLublow, M., S. Kubala, J. -F Veyan, and Y. J. Chabal. 2012. "Colored porous silicon as support for plasmonic nanoparticles." Journal of Applied Physics 111(8): 084302-084302.
dc.identifier.issn0021-8979en_US
dc.identifier.issue8en_US
dc.identifier.startpage84302en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/3047
dc.identifier.volume111en_US
dc.relation.urihttp://dx.doi.org/10.1063/1.3703469en_US
dc.rights© 2012 American Institute of Physicsen_US
dc.source.journalJournal of Applied Physicsen_US
dc.subjectAtomic force microscopyen_US
dc.subjectColorimetryen_US
dc.subjectPorous siliconen_US
dc.subjectNanoparticlesen_US
dc.subjectGolden_US
dc.titleColored Porous Silicon as Support for Plasmonic Nanoparticlesen_US
dc.typetexten_US
dc.type.genrearticleen_US

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