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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/4758
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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.accessioned2012-06-22T09:25:27Z-
dc.date.available2012-06-22T09:25:27Z-
dc.date.issued2011-01-
dc.identifier.citationApplied Physics A: Materials Science and Processing, 2011, Vol.102, p115en
dc.identifier.issn0947-8396-
dc.identifier.issn1432-0630 (online)-
dc.identifier.urihttp://hdl.handle.net/2289/4758-
dc.descriptionRestricted Access.en
dc.description.abstractWe have synthesized Dy3+-doped ZnO nanoparticles at room temperature through the sol-gel method. X-ray diffraction and Scanning electron microscopic studies confirm the crystalline nature of the particles. Excitonic absorption of ZnO shows three different bands, and we observe that incorporation of Dy3+ results in the shifting and broadening of the n=1 absorption band of ZnO. Photoluminescence studies done at the excitation wavelength of 335 nm show broad emission containing five different bands. Open-aperture z-scan studies done at 532 nm using 5 ns laser pulses show an optical limiting behavior, which numerically fits to a three-photon type absorption process. The nonlinearity is essentially resonant, as it is found to increase consistently with Dy3+ concentration. This feature makes Dy3+-doped ZnO a flexible optical limiter for potential device applications.en
dc.language.isoenen
dc.publisherSpringer Verlagen
dc.relation.urihttp://dx.doi.org/10.1007/s00339-010-6014-4en
dc.relation.urihttp://adsabs.harvard.edu/abs/2011ApPhA.102..115Ken
dc.rights2011 Springer Verlagen
dc.titleSpectrally broadened excitonic absorption and enhanced optical nonlinearities in Dy3+-doped ZnO nanoparticlesen
dc.typeArticleen
Appears in Collections:Research Papers (LAMP)

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