Electric field directed self-assembly of cuprous oxide nanostructures for photon sensing.
Electric field directed self-assembly of cuprous oxide nanostructures for photon sensing.
复制标题
DOI：
10.1021/nn900915m
复制
发表时间：
2009-11
期刊：
影响因子：
17.1
通讯作者：
S. Sahoo;Sudhir Husale;B. Colwill;T. Lu;S. Nayak;P. Ajayan
中科院分区：
文献类型：
--
作者：
S. Sahoo;Sudhir Husale;B. Colwill;T. Lu;S. Nayak;P. Ajayan
我们展示了一种新的无化学水基技术，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）水中阳极氧化Cu而形成的。通过调节偏压和生长时间，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，从一维纳米线到不同的复杂的二维和三维结构的各种纳米结构被成功地生长。我们发现，在自组装的结构的形态演化强烈依赖于空间电场分布在基板上。此外，由这些纳米线网络制成的电子器件在白色光照射下表现出有前途的光子传感特性，并且可以在纳米级的光电探测和光伏研究中用于未来的应用。
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.