[en] This work presents a sol-gel approach for ZnO:Al films deposition. The effect of Al component and annealing treatments (from 500 to 800°C) on the film structural and optical properties has been studied. Sol-gel ZnO and Al2O3 films are used for comparative analyses. Structural evolution as a function of annealing temperatures is investigated by using X-ray diffraction (XRD). XRD analysis of ZnO:Al films revealed that the predominant crystal phase is a wurtzite ZnO. It can be seen that the addition of Al leads to decaying of the film crystallinity. Fourier Transform Infrared (FTIR) and UV-VIS spectrophotometry are applied for characterization of the vibrational and optical properties. The Al component influences the shapes of the absorption bands. The optical properties of the sol-gel ZnO, ZnO:Al and Al2O3 films reveal very interesting features. Increasing Al component results in significantly higher film transparency.
Disciplines :
Chemistry
Author, co-author :
Ivanova, T; Bulgarian Academy of Sciences > Central Laboratory of Solar Energy and New Energy Sources
Harizanova, A; Bulgarian Academy of Sciences > Central Laboratory of Solar Energy and New Energy Sources
Koutzarova, T; Bulgarian Academy of Sciences > Institute of Electronics
Vertruyen, Bénédicte ; Université de Liège > Département de chimie (sciences) > Chimie inorganique structurale
Language :
English
Title :
Optical characterization of sol-gel ZnO:Al thin films
Publication date :
2015
Journal title :
Superlattices and Microstructures
ISSN :
0749-6036
eISSN :
1096-3677
Publisher :
Academic Press
Volume :
85
Pages :
101-111
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
WBI - Wallonie-Bruxelles International BAS - Bulgarian Academy of Sciences
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