Water-repellant properties of mixed films with TiO2 base

Rung-Ywan Tsai; Chaur-Tsang Wei; Dhei-Jhai Lin; William J. Lee; Mu-Yi Hua

doi:10.1117/12.385419

17 May 2000 Water-repellant properties of mixed films with TiO2 base

Rung-Ywan Tsai, Chaur-Tsang Wei, Dhei-Jhai Lin, William J. Lee, Mu-Yi Hua

Proceedings Volume 3941, Combinatorial and Composition Spread Techniques in Materials and Device Development; (2000) https://doi.org/10.1117/12.385419
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States

Abstract

This report is focused on the water-repellant properties of TiO₂ and its mixed films with adding certain oxides or fluorides. It is well known that TiO₂ films and powders can be used as a water splitting coating due to its photocatalytic reaction. With the addition of the second material, the absorption band and the microstructure of TiO₂ films are changed, which will influence their photocatalytic properties. Mixed films based on TiO₂ with various compositions were deposited on unheated BK7 glass substrates by e-beam gun coevaporation technique with ion bombardments. Some of the films were also deposited at a glass substrate temperature of 300 degree(s)C without ion assistance. The degrees of water repellence of these films before and after UV irradiation were evaluated in terms of the contact angle of the deionized water on the coating surface. The correlation between the composition, UV-light exposure time and the water-repellant properties of the mixed films ere evaluated and discussed.

Citation Download Citation

Rung-Ywan Tsai, Chaur-Tsang Wei, Dhei-Jhai Lin, William J. Lee, and Mu-Yi Hua "Water-repellant properties of mixed films with TiO2 base", Proc. SPIE 3941, Combinatorial and Composition Spread Techniques in Materials and Device Development, (17 May 2000); https://doi.org/10.1117/12.385419

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