Abstract
Titanium oxynitride thin films were deposited by sol-gel method on quartz substrate in an attempt to study the microstructural and optical properties of TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">x</sub> N <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">y</sub> films deposited by sol-gel method. For this purpose, X-ray diffraction (XRD), atomic force microscopy (AFM), and spectroscopic ellipsometry (SE) investigations were performed. Examining the surface morphology and grain sizes of the films, complex nanostructured surfaces, with a mean cluster size in the range of 20-30 nm were obtained in connection with the preparation method. Regarding their optical properties, it was found a decrease of the optical band gap of N-doped TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> films down to the visible range.
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