高等学校化学学报 ›› 2009, Vol. 30 ›› Issue (12): 2344.

• 研究论文 • 上一篇    下一篇

TiO2介孔薄膜的制备及紫外光电响应性质

木锐, 戴树玺, 程纲, 武艳强, 张兴堂, 杜祖亮   

  1. 河南大学特种功能材料教育部重点实验室, 开封 475004
  • 收稿日期:2009-05-26 出版日期:2009-12-10 发布日期:2009-12-10
  • 通讯作者: 杜祖亮, 男, 博士, 教授, 主要从事纳米结构材料与器件研究. E-mail: zld@henu.edu.cn
  • 基金资助:

    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.

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.

摘要:

采用蒸发诱导自组装法制备了高度有序的TiO2介孔薄膜. 利用X射线衍射(XRD)、扫描电子显微镜(SEM)和透射电子显微镜(TEM)等分析手段对其进行了表征. 结果表明, 所得样品的孔径约为5 nm, 孔道规则, 且骨架为纯锐钛矿结构. 紫外-可见光谱(UV-Vis)的表征结果表明, 制备的TiO2介孔薄膜对波长小于380 nm的紫外线有很强的吸收. 对TiO2介孔薄膜的I-V(电流-电压)特性进行了表征, 发现加光后其I-V曲线由暗态时的肖特基特性转变为欧姆特性, 表明TiO2介孔薄膜对紫外光有很敏感的光电响应.

关键词: TiO2介孔薄膜; 电流-电压特性; 紫外光电响应

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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