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以二水氯化铜和硫脲为原料,聚乙烯吡咯烷酮为表面活性剂,不同体积比的酒精与去离子水为溶剂,通过水热法合成了硫化亚铜纳米球、纳米花与纳米棒三种形貌的晶体。通过X射线衍射(XRD)、场发射扫描电子显微镜(FESEM)与透射电子显微镜(TEM)对晶体的形貌与结构进行表征。XRD测试表明,这三种纳米结构均为高结晶性材料。此外还测试了这三种纳米结构的场发射性能。场发射实验结果表明,棒状结构的硫化亚铜纳米晶体具有最佳的场发射性能,开启场约3.1 V/μm,阈场约5.9 V/μm,场增强因子约2 064。这些结论表明,硫化亚铜纳米棒在场发射器件领域具有良好的应用前景。
Using cupric chloride and thiourea as raw materials, polyvinylpyrrolidone as surfactant and different volumes of alcohol and deionized water as solvent, cuprous sulfide nanospheres, nanometer flower and nanometer rod three Species of the crystal. The morphology and structure of the crystal were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). XRD tests show that all three nanostructures are highly crystalline materials. In addition, the field emission properties of the three nanostructures were also tested. The results of field emission experiments show that the rod-shaped CuS nanocrystals have the best field emission properties with an activation field of about 3.1 V / μm, a threshold field of about 5.9 V / μm and a field enhancement factor of about 2 064. These conclusions show that the cuprous sulfide nanorods have good application prospects in the field of field emission devices.