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Wet chemical growth of semiconductor 1-D nanostructure arrays on conductive substrates

机译:导电基材半导体1-D纳米结构阵列的湿化学生长

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摘要

One-dimensional nanowire arrays directly grown on substrates have been recognized to be superior to two-dimensional thin films and nanoparticle films since they demonstrate in general single crystallinity, larger surface area, fast charge separation, and good contact with substrates. Accordingly, they provide an accessible way to the development of high performance devices such as photovoltaic cells, sensors, photocatalysts, electrodes, light emitters, etc. Although high-temperature vapor-phase synthesis is the most commonly employed method to produce high-crystallinity and high-density one-dimensional nanostructures with high purity, it is not acceptable in terms of the growing demand for the use of TCO (transparent conducting oxide) glass substrates, cost-effectiveness, and large scale mass production. Also, it is very difficult to control the precursor vapor pressures to meet the stoichiometry of many compound semiconductors through the vapor phase growth. In this context, there is a high need for the development of appropriate and efficient wet-chemical growth methods for one-dimensional nanostructures for a broad range of applications. In this review, we provide an overview of various low-temperature wet chemical synthetic approaches. In each fabrication method, we summarize the brief synthetic routes, microstructures, and the mechanism of anisotropic growth. In addition, the last section introduces various applications of one-dimensional nanostructure arrays. This review provides the current status and prospects of the growth of one-dimensional nanostructure arrays via wet chemical routes.
机译:已经认识到在基板上直接生长的一维纳米线阵列优于二维薄膜和纳米颗粒膜,因为它们在一般的单结晶度,较大的表面积,快速电荷分离和与基材的良好接触中表现出来。因此,它们提供了一种可进入的方式,可提供高性能装置,例如光伏电池,传感器,光催化剂,电极,光发射器等。尽管高温气相合成是产生高结晶度和最常用的方法高密度一维纳米结构高纯度,就不断增长的使用TCO(透明导电氧化物)玻璃基板,成本效益和大规模批量生产而不可接受。而且,非常难以控制前体蒸汽压力以通过气相生长满足许多化合物半导体的化学计量。在这种情况下,对一维纳米结构的适当高效的湿化学生长方法具有很高的需要,用于广泛的应用。在本综述中,我们概述了各种低温湿化学合成方法。在每种制造方法中,我们总结了短暂的合成途径,微观结构和各向异性生长的机制。此外,最后一节介绍了一维纳米结构阵列的各种应用。本综述提供了通过湿化学途径的一维纳米结构阵列的现状和前景。

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