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dc.contributor.authorGiannakopoulou, T.en
dc.contributor.authorTodorova, N.en
dc.contributor.authorOsiceanu, P.en
dc.contributor.authorLagoyannis, A.en
dc.contributor.authorVaimakis, T.en
dc.contributor.authorTrapalis, C.en
dc.date.accessioned2015-11-24T16:55:21Z-
dc.date.available2015-11-24T16:55:21Z-
dc.identifier.issn0040-6090-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/10296-
dc.rightsDefault Licence-
dc.subjecttitanium dioxideen
dc.subjectband gapen
dc.subjectabsorption edgeen
dc.subjectdispersion modelsen
dc.subjectannealingen
dc.subjectsol-gelen
dc.subjectphotocatalysten
dc.subjectdip coating depositionen
dc.subjectchemical-vapor-depositionen
dc.subjectphotocatalytic activityen
dc.subjecttitanium-dioxideen
dc.subjectpowdersen
dc.subjectdependenceen
dc.subjectsiliconen
dc.titleDescription of TiO(2) thin films treated in NH(3) atmosphere by optical dispersion modelsen
heal.typejournalArticle-
heal.type.enJournal articleen
heal.type.elΆρθρο Περιοδικούel
heal.identifier.primaryDOI 10.1016/j.tsf.2009.05.015-
heal.identifier.secondary<Go to ISI>://000270410800039-
heal.identifier.secondaryhttp://ac.els-cdn.com/S0040609009009560/1-s2.0-S0040609009009560-main.pdf?_tid=c7b7645efc169e82c00cc7d6cbbb3b88&acdnat=1333113673_7e00c0393423d155a00ae47a1f9b308e-
heal.languageen-
heal.accesscampus-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείαςel
heal.publicationDate2009-
heal.abstractThe influence of a reductive ammonia atmosphere on TiO(2) sol-gel film structural and optical characteristics was investigated. X-ray Diffraction technique, X-ray photoelectron spectroscopy and Rutherford Back Scattering analysis were applied to study the crystallinity, oxidation state and element concentration profile of the modified films. Their optical properties were investigated by UV-Vis spectroscopy. The refractive index and extinction coefficient were obtained by fitting theoretical transmittance curves to experimental ones using Forouhi-Bloomer (FB) and Tauc-Lorentz (TL) physical models. Both models revealed slight decrease (up to 2.6-2.7 eV) of the FB and TL band gaps with increase of the treatment temperature. These results were discussed in terms of the additional energy levels creation due to the defect TiO(2) structure formation during thermal treatment in reductive atmosphere. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.en
heal.publisherElsevieren
heal.journalNameThin Solid Filmsen
heal.journalTypepeer reviewed-
heal.fullTextAvailabilityTRUE-
Appears in Collections:Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά)

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