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Effect of the Thickness on the Optical Properties of (TiO2) Thin Films. | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 21, Issue 4, 2010, Pages 131-138 | ||
| Author | ||
| Arwaa F. Saleh | ||
| Abstract | ||
| Thin films of titanium dioxide TiO2 were prepared using chemical spray pyrolysis technique on glass substrate preheated at (210 oC) with different thickness (100, 200, 300, 400 and 500 nm). XRD study indicated these films were anatase. The thickness dependence on optical properties (absorption coefficient, extinction coefficient, refractive index and energy gap for direct transitions) of transparent (TiO2) thin films were studied. Their values: for absorption coefficient is about (1.5x105-4.7x105 cm-1), and for extinction coefficient is about (0.353-1.097), and for refractive index is varied from (2.8 - 3.1), and direct energy gap for allowed is about (3.69 - 3.605 eV), while that for forbidden is (3.2857 - 3.1857 eV) for all films prepared. | ||
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