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利用水热法在Cu片上制备Cu(OH)2纳米线阵列,将单壁碳纳米管(SWCNTs)涂覆在其表面并进行低温热处理,获得一维Cu O/CNTs复合纳米结构体系。利用场发射扫描电子显微镜和X射线衍射仪对复合材料的表面形貌和结构进行表征,并对其进行场发射测试。结果表明,SWCNTs薄膜呈网状结构互相交联,均匀覆盖整个纳米Cu O薄膜约一半的面积;Cu O/CNTs复合结构具有低的开启场强(0.8 V/μm)、高的场增强因子和稳定的发射电流,该复合结构在场发射应用领域表现出较好的前景。
Cu (OH) 2 nanowire arrays were prepared on Cu wafers by hydrothermal method. Single-walled carbon nanotubes (SWCNTs) were coated on the surface and subjected to low temperature heat treatment to obtain one-dimensional Cu O / CNTs composite nanostructures. The surface morphology and structure of the composites were characterized by field emission scanning electron microscopy and X-ray diffractometer, and the field emission test was carried out. The results showed that the SWCNTs films were cross-linked in a network structure and uniformly covered about half the area of the entire CuO film. The CuO / CNTs composite structure had a low ON field strength (0.8 V / μm), a high field enhancement factor Stable emission current, the composite structure shows good prospects in field emission applications.