Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Temperature influence on microstructure and optical properties of TiO2-Au thin films

Abstract : TiO2-Au thin films were deposited on quartz substrate using sol-gel technique. The influence of the annealing temperature on microstructure and optical properties was examined. SEM micrographs showed a homogeneous distribution of Au nanoparticles when the annealing temperature is increased. X-ray diffraction and Raman spectroscopy allowed the identification of the anatase phase at 500 degrees C that persisted up to 800 degrees C. Optical spectra showed the presence of localized plasmon resonance as a result of the presence of Au nanoparticles; the loci of the absorption peaks were found to depend on the annealing temperature. The effective medium model was used to describe the spectrophotometric measurements. Numerical calculations permitted the determination of optical constants. The band gap Eg of TiO2-Au thin films was found to decrease from 3.21 to 2.71 eV with increasing annealing temperature.
Type de document :
Article dans une revue
Liste complète des métadonnées

https://hal-u-picardie.archives-ouvertes.fr/hal-03627748
Contributeur : Louise DESSAIVRE Connectez-vous pour contacter le contributeur
Soumis le : vendredi 1 avril 2022 - 14:37:36
Dernière modification le : mardi 13 septembre 2022 - 14:26:24

Identifiants

Collections

Citation

A. Lahmar, A. Benchaabane, M. Aderdour, A. Zeinert, M. Es-Souni. Temperature influence on microstructure and optical properties of TiO2-Au thin films. Applied physics. A, Materials science & processing, Springer Verlag, 2016, 122 (2), ⟨10.1007/s00339-016-9681-y⟩. ⟨hal-03627748⟩

Partager

Métriques

Consultations de la notice

2