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Erschienen in:
28.10.2016
The optical, photo catalytic behavior and hydrophilic properties of silver and tin co doped TiO2 thin films using sol–gel method
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 4/2017
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Abstract
Ag and Sn co doped TiO2 thin films were deposited on glass slides by sol–gel dip coating technique. Morphology, optical properties and wettability of the obtained TiO2 thin films changed by changing the content of dopant. The TiO2 thin films with silver molar ratio from 5 to 20% (molar ratio of tin fixed at 5 mol%) were tested for its photo catalytic property under irradiation of visible light. The influences of different molar ratio of Ag on hydrophilicity of the films were also investigated by measuring the water contact angle. The results showed that the wettability was significantly improved by increasing silver content comparing with pure TiO2 thin film. Accordingly, the thin films showed various optical band gaps. As, the optical band gap of the nanostructured thin films decreased with various content of dopant from 3.15 to 2.13 eV.