Preparation method and application of silicon nanowires

Abstract

In recent years, silicon nanowires have become a hot spot in the new material industry. As a kind of nanomaterial, silicon nanowires have excellent physical and chemical properties. However, the preparation method of silicon nanowires is not mature enough, which limits its further application. This paper mainly analyses the mechanism, advantages and disadvantages of several mainstream silicon nanowires preparation methods, and discusses the application of silicon nanowires and the future development direction. The results show that the chemical vapor deposition method can be used for large-scale preparation of silicon nanowires, while the laser ablation method can produce silicon nanowires with higher purity, and the electron beam lithography method has the advantages of high flexibility. However, the efficiency of these three methods is not high, and the cost is high, which is also the problem that the silicon nanowire preparation industry is looking forward to solve. Relying on the excellent conductivity, thermal conductivity and other characteristics of silicon nanowires, silicon nanowires can be applied to a variety of new energy industries. Based on the properties of silicon nanowires, this paper analyses the application of silicon nanowires in lithium batteries, solar cells, biosensors and thermoelectric materials in recent years, and forecasts its development trend, so as to provide a certain reference for researchers to further explore the research of silicon nanowires.