determination of optical constants from transmittance data of co-doped Zn0.90Co0.05M0.05O (Mdouble bondAl, Cu, Cd, Na) films

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dc.contributor.authorSabrina Roguai 1
dc.contributor.authorAbdelkader Djelloul 2
dc.contributor.authorCorinne Nouveau 3
dc.contributor.authorT. Souier 4
dc.contributor.authorA.A. Dakhel 5
dc.contributor.authorM. Bououdina 6
dc.date.accessioned2024-02-14T22:10:52Z
dc.date.available2024-02-14T22:10:52Z
dc.date.issued2014-02-24
dc.description/
dc.description.abstractZnO, Zn0.95Co0.05O and Zn0.90Co0.05M0.05O (M@Al, Cd, Na, Cu) single phase films have been successfully synthesized by ultrasonic spray pyrolysis technique. Structural analysis by X-ray diffraction show that all the films have hexagonal wurtzite structure with an average crystallite size in the range of 19–25 nm. SEM analysis revealed that Cd and Na preserve the shape of nanopetals observed with ZnO or CoAZnO films, while the doping with Al or Cu promote the formation of dense films constituted of nanorods. By the application of Levenberg–Marquardt least square method, the experimental transmit tance data were fitted perfectly with the transmittance data calculated via a combination of Wemple– DiDomenico model, absorption coefficient of an electronic transition and Tauc–Urbach model. The concentration of absorbing centres NCo and oscillator strength f of d–d transition of Co2+ ions are calculated from Smakula’s formula
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dc.identifier.citation22
dc.identifier.urihttp://dx.doi.org/10.1016/j.jallcom.2014.02.080
dc.identifier.urihttp://dspace.univ-khenchela.dz:4000/handle/123456789/1039
dc.language.isoen
dc.publisherJournal of Alloys and Compounds, Elsevier Ltd
dc.relation.ispartofseries599 (2014) 150–158; 599
dc.titledetermination of optical constants from transmittance data of co-doped Zn0.90Co0.05M0.05O (Mdouble bondAl, Cu, Cd, Na) films
dc.typeArticle
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