Optical studies of TiO<sub>2</sub> films deposited on different substrates

C. Cotîrlan; V. Vasile; F. Ungureanu

doi:10.1117/12.756805

1 August 2007 Optical studies of TiO₂ films deposited on different substrates

C. Cotîrlan, V. Vasile, F. Ungureanu

Proceedings Volume 6785, ROMOPTO 2006: Eighth Conference on Optics; 67851X (2007) https://doi.org/10.1117/12.756805
Event: ROMOPTO 2006: Eighth Conference on Optics, 2006, Sibiu, Romania

Abstract

Titanium dioxide thin films prepared by sol-gel method and deposited on p-Si (111), n-GaAs (100) and glass have been investigated by Raman spectrometry and photoluminescence analysis. The films were annealed in the temperature range (500-800)°C in air. Raman scattering studies reveal the presence of Raman active modes in the calcinated TiO₂ films related to anatase phase of titania. The photoluminescence spectrum presents prominent red shifted peaks (e.g. at 400 nm for TiO₂/glass), where the maximum is related to the presence in titania films of defect levels corresponding to oxygen vacancies.

Citation Download Citation

C. Cotîrlan, V. Vasile, and F. Ungureanu "Optical studies of TiO₂ films deposited on different substrates", Proc. SPIE 6785, ROMOPTO 2006: Eighth Conference on Optics, 67851X (1 August 2007); https://doi.org/10.1117/12.756805

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