[Variation des propriétés structurales et optiques des couches minces de TiO2 obtenues par voie sol–gel à différentes températures de recuit]
Les propriétés structurales et optiques de couches minces de TiO2 obtenues par le procédé sol–gel ont été examinées à différentes températures de recuit ainsi qu'à différents trempages. Les analyses aux rayons X et spectroscopie Raman montrent que les couches minces de TiO2 obtenues pour 3 trempages cristallisent, dans les phases anatase et brookite, à partir de la température de recuit 350 °C. La taille des grains calculée à partir des diagrammes de diffraction varie de 6,7 à 23,5 nm. L'indice de réfraction et la porosité varient en fonction de la température de recuit et du nombre de trempages. Nos couches sont transparentes dans le visible et opaques dans l'UV, et ceci quelles que soient la température et le nombre de trempages.
Structural and optical properties of TiO2 thin films prepared using a sol–gel process have been examined at different treatment temperatures and for different layer counts. XRD and Raman analyzes of our thin films of TiO2 show that 3 layer films crystallize in anatase and brookite phases, starting from the temperature of annealing 350 °C. The grain size calculated from XRD patterns varies from 6.7 to 23.5 nm. Refractive index and porosity are found to vary with treatment temperature and number of dippings. Our films, irrespective of treatment temperature and number of dippings, are transparent in the visible range and opaque in the UV region.
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Publié le :
Mots-clés : Couches minces, TiO2, Sol–gel, Anatase, Brookite
Raouf Mechiakh 1 ; Rabah Bensaha 1
@article{CRPHYS_2006__7_3-4_464_0,
author = {Raouf Mechiakh and Rabah Bensaha},
title = {Variation of the structural and optical properties of sol{\textendash}gel {TiO\protect\textsubscript{2}} thin films with different treatment temperatures},
journal = {Comptes Rendus. Physique},
pages = {464--470},
publisher = {Elsevier},
volume = {7},
number = {3-4},
year = {2006},
doi = {10.1016/j.crhy.2006.05.002},
language = {en},
}
TY - JOUR AU - Raouf Mechiakh AU - Rabah Bensaha TI - Variation of the structural and optical properties of sol–gel TiO2 thin films with different treatment temperatures JO - Comptes Rendus. Physique PY - 2006 SP - 464 EP - 470 VL - 7 IS - 3-4 PB - Elsevier DO - 10.1016/j.crhy.2006.05.002 LA - en ID - CRPHYS_2006__7_3-4_464_0 ER -
%0 Journal Article %A Raouf Mechiakh %A Rabah Bensaha %T Variation of the structural and optical properties of sol–gel TiO2 thin films with different treatment temperatures %J Comptes Rendus. Physique %D 2006 %P 464-470 %V 7 %N 3-4 %I Elsevier %R 10.1016/j.crhy.2006.05.002 %G en %F CRPHYS_2006__7_3-4_464_0
Raouf Mechiakh; Rabah Bensaha. Variation of the structural and optical properties of sol–gel TiO2 thin films with different treatment temperatures. Comptes Rendus. Physique, Statistical mechanics of non-extensive systems, Volume 7 (2006) no. 3-4, pp. 464-470. doi : 10.1016/j.crhy.2006.05.002. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2006.05.002/
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