硫化镉纳米线的生长研究

Study on the Growth of Cadmium Sulfide Nanowires

摘要: 近年来，硫化镉纳米线作为一种重要的光电材料，其能提高太阳能电池对太阳能的吸收，在太阳能电池制备、发光二极管、光敏电阻器、光电探测器等领域都有涉及，用途广泛。硫化镉纳米线的制备方法主要有机械研磨法、微波法、溶液凝胶法、导向生长法等。本文中生长硫化镉纳米线采用水热法，该方法具有制作成本较低，实验容易操作，反应便于控制等优势。从本文的实验结果可以得出不同比例的镉源与硫源所生长的硫化镉的性能不同，其在镉硫比为1:1时，所生长的硫化镉纳米线表现出的形貌及长度最优。

Abstract: In recent years, cadmium sulfide nanowires as an important opto-electronic material, its ability to absorb and utilize solar energy occupies a great part, and its use in solar cell preparation, light- emitting diodes, photoresistors, photodetectors and other fields are involved in a wide range of applications. The preparation methods of cadmium sulfide nanowires mainly include mechanical grinding method, microwave method, solution gel method, guided growth method, etc. In this paper, cadmium sulfide nanowires are prepared by hydrothermal method, which has the advantages of low cost of fabrication, easy operation of experiment and easy control of reaction. Cadmium oxide, sulfur powder and L-cysteine are added to ethylenediamine, stirred with a magnetic stirrer, and the stirred solution is put into a reaction vessel, and cadmium sulfide nanowires can be made after centrifugal treatment and washing and drying at the end of the reaction. We can conclude from the results that the properties of cadmium sulfide prepared by dif-ferent ratios of cadmium source and sulfur source are different, and the best cadmium sulfide is produced at the ratio of 1:1.