定向氧化锌纳米管阵列的可控制备及其持续光电导效应研究

项目名称： 定向氧化锌纳米管阵列的可控制备及其持续光电导效应研究

项目编号： No.10874189

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 轻工业、手工业

项目作者： 师文生

作者单位： 中国科学院理化技术研究所

项目金额： 38万元

中文摘要： 本项目紧紧围绕定向氧化锌纳米管阵列的可控制备及其持续光电导效应的物理机制、调控方法等开展了深入研究。通过无模板电化学方法实现了氧化锌纳米管阵列在不同导电衬底上的形貌和尺寸的控制。并将该方法作进一步拓展，实现了无模板电化学法可控制备CuTe及Te一维纳米结构。在此基础上，通过单根氧化锌纳米管持续光电导效应的研究，揭示了其持续光电导的物理本质，并实现了持续光电导效应的红外光调控，这一结果将进一步推动持续光电导效应的应用。在项目的资助下，我们在Angewandte Chemie International Edition、Journal of the American Chemical Society、Applied Physics Letters等杂志上发表SCI论文21篇，到目前为止，已被引用59次。申请发明专利19项，获授权发明专4项。毕业博士研究生4人.

中文关键词： 氧化锌纳米管阵列;无模板电化学;持续光电导;可控制备

英文摘要： The controllable growth and persistent photoconductivity (PPC) of oriented ZnO nanotubes (ZnONTs) arrays were investigated during the past three years. By employing the template-free electrochemical method, the size, dimensions, and morphologies of the ZnONTs arrays are well controlled on various conductive substrates. Meanwhile, this method was extended to synthesis of one-dimensional CuTe and Te nanostructures. Based on that, the PPC effect of single ZnONT was investigated, and the physical mechanism of the PPC from ZnONT was revealed. An optical modulation on the PPC effect of the ZnONTs was realized with 980 nm infrared (IR) laser. It was found that the decay time for the PPC can be significantly shortened by the IR irradiation. The present optical modulation on the PPC is suggested to have potential applications in enhancing the performance of ZnO-based photodetectors. Under the support from this funding, 21 scientific papers have been published on high-level international journals, such as Angewandte Chemie International Edition、Journal of the American Chemical Society、Applied Physics Letters et. al.. These papers have been cited for 59 times. While, 19 invention patents have been applied, and 4 inventions of them have been patented.

英文关键词： ZnO nanotubes arrays; persistent photoconductivity；template-free electrochmical deposition; controllable growth