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Effect of annealing on In2S3 thin films prepared by flash evaporation

Published online by Cambridge University Press:  21 September 2007

K. Bouabid ,
A. Ihlal ,
Y. Amira ,
A. Sdaq ,
A. Outzourhit  and
G. Nouet
K. Bouabid*
Affiliation:
Laboratoire Matériaux et Énergies Renouvelables (LMER), Université Ibn Zohr Dép. physique, Faculté des sciences, BP 8106, Hay Dakhla, 80000 Agadir, Morocco
A. Ihlal
Affiliation:
Laboratoire Matériaux et Énergies Renouvelables (LMER), Université Ibn Zohr Dép. physique, Faculté des sciences, BP 8106, Hay Dakhla, 80000 Agadir, Morocco
Y. Amira
Affiliation:
Laboratoire Matériaux et Énergies Renouvelables (LMER), Université Ibn Zohr Dép. physique, Faculté des sciences, BP 8106, Hay Dakhla, 80000 Agadir, Morocco
A. Sdaq
Affiliation:
Laboratoire Matériaux et Énergies Renouvelables (LMER), Université Ibn Zohr Dép. physique, Faculté des sciences, BP 8106, Hay Dakhla, 80000 Agadir, Morocco
A. Outzourhit
Affiliation:
Laboratoire de physique des solides et des couches minces, Département de physique, Faculté des sciences Semlalia, BP S/3293, Marrakech, Morocco
G. Nouet
Affiliation:
Structure des Interfaces et Fonctionnalités des Couches Minces (SIFCOM), Ensicaen, Bd Maréchal Juin, 14050 Caen, France
*
[email protected]
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Abstract

In2S3 thin films were deposited by flash evaporation of In2S3 powder. The effect of annealing in vacuum and under sulphur and oxygen atmosphere on the structural, compositional and optical properties of these films was investigated. X-ray diffraction studies reveal that the as-deposited films are amorphous. The formation of β-In2S3 phase is obtained after annealing under vacuum at 693 K or under sulphur pressure at a lower annealing temperature (573 K). The EDAX analysis reveals that the sulphurized films are nearly stoichiometric and those annealed in vacuum are sulphur deficient. Optical transmission spectra showed a slight shift of the absorption edge towards lower wavelengths. The optical gap value varied between 2.4 and 3 eV as a function of the film thickness, the annealing temperature and the atmosphere ambient.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 40 , Issue 2 , November 2007 , pp. 149 - 154
Copyright
© EDP Sciences, 2007

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