Chem. J. Chinese Universities ›› 2009, Vol. 30 ›› Issue (12): 2344.

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Preparation and Ultraviolet Photoelectric Response of TiO2 Mesoporous Thin Films

MU Rui, DAI Shu-Xi, CHENG Gang, WU Yan-Qiang, ZHANG Xing-Tang, DU Zu-Liang*   

  1. Key Laboratory of Special Functional Materials, Henan University, Kaifeng 475004, China
  • Received:2009-05-26 Online:2009-12-10 Published:2009-12-10
  • Contact: DU Zu-Liang. E-mail: zld@henu.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 90306010, 10874040)和河南省教育厅自然科学基金(批准号: 2009A140001)资助.

Abstract:

Highly orderded TiO2 mesoporous thin films were synthesized through evaporation induced self-assembly(EISA). The as-synthesized samples were characterized by X-ray diffraction(XRD), scanning electron microscope(SEM), and transmission electron microscope(TEM). The results show that the mesoporous sample has a highly organized and nanocrystaline anatase framework with pore size of about 5 nm. The UV-Vis spectra reveal that TiO2 mesoporous thin films have strong absorbance to UV light(λ<380 nm). The I-V(current-voltage) properties of TiO2 mesoporous thin films were characterized. The results show that the I-V characteristics have changed when UV light is on and off, which indicate that TiO2 mesoporous thin films have sensitive ultraviolet photoelectric response.

Key words: TiO2 mesoporous thin film; I-V characteristic; Ultraviolet photoelectric response

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