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http://hdl.handle.net/2289/4758
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DC Field | Value | Language |
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dc.contributor.author | Karthikeyan, B. | - |
dc.contributor.author | Suchand Sandeep, C.S. | - |
dc.contributor.author | Pandiyarajan, T. | - |
dc.contributor.author | Venkatesan, P. | - |
dc.contributor.author | Philip, Reji | - |
dc.date.accessioned | 2012-06-22T09:25:27Z | - |
dc.date.available | 2012-06-22T09:25:27Z | - |
dc.date.issued | 2011-01 | - |
dc.identifier.citation | Applied Physics A: Materials Science and Processing, 2011, Vol.102, p115 | en |
dc.identifier.issn | 0947-8396 | - |
dc.identifier.issn | 1432-0630 (online) | - |
dc.identifier.uri | http://hdl.handle.net/2289/4758 | - |
dc.description | Restricted Access. | en |
dc.description.abstract | We 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.iso | en | en |
dc.publisher | Springer Verlag | en |
dc.relation.uri | http://dx.doi.org/10.1007/s00339-010-6014-4 | en |
dc.relation.uri | http://adsabs.harvard.edu/abs/2011ApPhA.102..115K | en |
dc.rights | 2011 Springer Verlag | en |
dc.title | Spectrally broadened excitonic absorption and enhanced optical nonlinearities in Dy3+-doped ZnO nanoparticles | en |
dc.type | Article | en |
Appears in Collections: | Research Papers (LAMP) |
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2011_APA_102_115.pdf Restricted Access | Restricted Access | 787 kB | Adobe PDF | View/Open Request a copy |
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