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Abstract

TiO2 thin films have a variety of applications, including electro-chromic displays, dye-sensitized solar cells, gas sensors, antireflection films, planner wave guides and optical filters. It also has environmental applications, being extensively used in the photo degradation of organic and inorganic pollutants, photovoltaic energy production and the production of hydrogen by water photo splitting. TiO2 is currently the leading photocatalyst because it can mineralize a large range of organic pollutants. However, owing to its large band gap energy (typically <380 nm), TiO2 can only absorb ultraviolet light but not visible light, which constitutes a proportion of solar light. The overall quantum yield rate can be influenced by the low rate of electron transfer to dissolved oxygen and a high rate of recombination between electron-hole pairs. The preparation of TiO2 thin films has received great attention because of its remarkable optical, photocatalytic and electrical properties. TiO2 thin films have been prepared by several techniques. In general, sol鈥揼el methods are more flexible and offer many advantages. In this study, TiO2 thin films were prepared by the sol鈥揼el method using the spin鈥揷oating technique because, nanocrystalline materials have tremendous impact on various recent developments in industry and science. The annealing temperature plays an important role during the crystalline process. The influence of the aged sol and annealing temperature on the physical properties of TiO2 thin films were investigated in this study.

Recent Publications

1. Su-Shia Lin, Chung-Sheng Liao, Sheng-You Fan, (2015), 鈥淓ffects of substrate temperature on properties of HfO2, HfO2: Al and HfO2:W films鈥�, Surface & Coatings Technology, 271:269-275.

2. Su-Shia Lin, Yung-Shiang Tsai, Kai-Ren Bai, (2016), 鈥淪tructural and physical properties of tin oxide thin films for optoelectronic applications鈥�, Applied Surface Science, 380:203-209.

3. Su-Shia Lin, Chung-Sheng Liao, (2016), 鈥淓ffects of the ratio of O2/Ar pressure on wettability and optical properties of HfO2 films before and after doping with Al鈥�, Applied Surface Science, 380:229-236.

4. Su-Shia Lin, Sheng-You Fan, Yung-Shiang Tsai, (2017), 鈥淓ffects of annealing on wettability and physical properties of SnO thin films deposited at low RF power densities鈥�, Ceramics International, 43:1802-1808.

5. Su-Shia Lin, Chung-Kai Peng, Cho-Wei Li, (2019), 鈥淲ettability and optical properties of SnO鈥揝nO2鈥揝b2O3 thin films deposited by simultaneous RF and DC magnetron sputtering鈥�, Journal of Alloys and Compounds, 770:433- 440.

Biography

Su-Shia Lin is Professor at Department of Applied Materials and Optoelectronic Engineering, National Chi Nan University, Taiwan. She has some research experiences in materials science. Her research work mainly focuses on electrical and optical films, optical memory and optical data storage, nanometer materials and optical design.

E-mail: sushia@ncnu.edu.tw