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Optical and nonlinear absorption properties of Na doped ZnO nanoparticle dispersions

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dc.contributor.authorKarthikeyan, B.
dc.contributor.authorSuchand Sandeep, C.S.
dc.contributor.authorPandiyarajan, T.
dc.contributor.authorVenkatesan, P.
dc.contributor.authorPhilip, Reji
dc.date.accessioned2009-11-05T10:30:42Z
dc.date.available2009-11-05T10:30:42Z
dc.date.issued2009-07-17
dc.descriptionRestricted Access. An open-access version is available at arXiv.org (one of the alternative locations)en
dc.description.abstractWe report linear and nonlinear optical properties of the biologically important Na doped ZnO nanoparticle dispersions. Interesting morphological changes involving a spherical to flowerlike transition have been observed with Na doping. Optical absorption measurements show an exciton absorption around 368 nm. Photoluminescence measurements reveal exciton recombination emission, along with shallow and deep trap emissions. The increased intensity of shallow trap emission with Na doping is attributed to oxygen deficiency and shape changes associated with doping. Nonlinear optical measurements show a predominantly two-photon induced, excited state absorption, when excited with 532 nm, 5 ns laser pulses, indicating potential optical limiting applicationsen
dc.identifier.citationApplied Physics Letters, 2009, Vol.95, p023118en
dc.identifier.issn0003-6951
dc.identifier.urihttp://hdl.handle.net/2289/3886
dc.language.isoenen
dc.publisherAmerican Institute of Physicsen
dc.relation.urihttp://dx.doi.org/10.1063/1.3182302en
dc.relation.urihttp://link.aip.org/link/?APPLAB/95/023118/1en
dc.rights2009 the American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.en
dc.titleOptical and nonlinear absorption properties of Na doped ZnO nanoparticle dispersionsen
dc.typeArticleen

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