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Karpinski, A., Ouldhamadouche, N., Ferrec, A., Cattin, L., Richard-Plouet, M., Brohan, L., Djouadi, M. A. & Jouan, P. .-Y. (2011) Optical characterization of transparent nickel oxide films deposited by. Thin Solid Films, 519 5767–5770. 
Added by: Laurent Cournède (2016-03-10 21:32:20)
Type de référence: Article
DOI: 10.1016/j.tsf.2010.12.203
Numéro d'identification (ISBN etc.): 0040-6090
Clé BibTeX: Karpinski2011
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Catégories: CESES, PCM
Mots-clés: chemical-vapor-deposition, Electrical discharge characteristics, electrochromic properties, growth, Nickel oxide (NiO), nio thin-films, preferred orientations, Reactive sputtering, spray-pyrolysis, thin films, Transparent p-type semiconductor
Créateurs: Brohan, Cattin, Djouadi, Ferrec, Jouan, Karpinski, Ouldhamadouche, Richard-Plouet
Collection: Thin Solid Films
Consultations : 5/292
Indice de consultation : 1%
Indice de popularité : 0.25%
Résumé     
In this paper, we characterize high transparency p-type semiconducting NiO thin films deposited by Direct Current Reactive Magnetron Sputtering from a pure Ni target in a mixture of oxygen and argon gases on Corning glass/SnO(2):F substrates at different oxygen contents ranging from 0\% at 30\%. The influence of the O(2)/Ar ratio and thickness on transmittance has been examined using ultraviolet-visible spectroscopy. The results show that whatever the oxygen proportion into the discharge, the nickel oxide films exhibit a polycrystalline structure. At low oxygen content, the preferential orientation is (111), for stoichiometric films the XRD diagram is powder-like whereas the preferential orientation is (200) for higher oxygen content. For low and high oxygen content, the transmittance is low. Thanks to plasma method and its ability to tune the oxygen content in the discharge and therefore the film composition, we have been able to explore carefully the intermediate zone and obtain transparent films. The optical absorption coefficient alpha has been calculated from the transmittance and the variation of (alpha h nu)(2) versus the photon energy (h nu) for nickel oxide is presented. The optical band gap energy has been evaluated and varies from 3.2 to 3.8 eV. (C) 2011 Elsevier B.V. All rights reserved.
Added by: Laurent Cournède  
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