Optical and morphological characterization of TiO2 films doped with silver nanoparticles

G. Valverde-Aguilar; J. A. García-Macedo; V. Renteria-Tapia

doi:10.1117/12.860612

10 September 2010 Optical and morphological characterization of TiO₂ films doped with silver nanoparticles

G. Valverde-Aguilar, J. A. García-Macedo, V. Renteria-Tapia

Proceedings Volume 7757, Plasmonics: Metallic Nanostructures and Their Optical Properties VIII; 77572Z (2010) https://doi.org/10.1117/12.860612
Event: SPIE NanoScience + Engineering, 2010, San Diego, California, United States

Abstract

Silver-doped titanium dioxide thin films were deposited on glass substrates by the sol-gel process. Undoped films and films doped with 1 mol% AgNO₃ were annealed at 100°C for 30 minutes and sintered at 520°C for 1 hour. The optical and morphological properties of the films were analyzed by optical absorption spectroscopy, X-ray diffraction and scanning electron microscopy. Two crystalline phases, anatase and rutile were identified in the films by X-ray diffraction. An absorption band was located at 415 nm which is associated to the surface plasmon resonance of the silver nanoparticles. This spectrum was modelled using the Gans theory considering small silver nanoparticles with diameters of 3 nm and a refractive index lower than that coming from host matrix.

Citation Download Citation

G. Valverde-Aguilar, J. A. García-Macedo, and V. Renteria-Tapia "Optical and morphological characterization of TiO₂ films doped with silver nanoparticles", Proc. SPIE 7757, Plasmonics: Metallic Nanostructures and Their Optical Properties VIII, 77572Z (10 September 2010); https://doi.org/10.1117/12.860612

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