Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA.
ACS Nano. 2009 Dec 22;3(12):3935-44. doi: 10.1021/nn900915m.
We demonstrate a novel chemical-free water-based technique to synthesize various forms of cuprous oxide nanostructures at room temperature. The self-assemblies of these nanostructures are formed by the anodic oxidation of Cu in deionized (DI) water. Direct growth of these nanostructures on SiO(2)/Si (100) substrate has been successfully achieved by tuning the bias voltage and the growth duration. A variety of nanostructures from one-dimensional nanowires to different complex two- and three-dimensional structures are successfully grown by this method. We show that the morphological evolution in the self-assembly of the structures strongly depends on the spatial electric field distribution on the substrate. Furthermore, the electrical devices made from these nanowire networks exhibit promising photon sensing characteristics under white light illumination and can be exploited for future applications in photodetection and photovoltaic studies at the nanoscale level.
我们展示了一种新颖的无化学试剂的水基技术，可在室温下合成各种形式的氧化亚铜纳米结构。这些纳米结构的自组装是通过在去离子（DI）水中对 Cu 进行阳极氧化形成的。通过调节偏置电压和生长时间，成功地在 SiO 2 / Si（100）衬底上直接生长了这些纳米结构。通过这种方法成功地生长了各种纳米结构，从一维纳米线到不同复杂的二维和三维结构。我们表明，结构自组装中的形态演变强烈取决于衬底上的空间电场分布。此外，这些纳米线网络制成的电子器件在白光照射下表现出有前景的光子传感特性，可用于未来在纳米尺度水平进行光电探测和光伏研究的应用。
