利用碳原子在铜镍合金中有限的溶解度,采用两步化学沉积法(Two-Regime CVD),实现直接以铜镍合金为衬底生长石墨烯/氮化硼纵向异质结。为了表征石墨烯/氮化硼异质结构的存在以及晶格质量,我们采用了共聚焦拉曼光谱仪对转移到二氧化硅衬底上的样品进行探测,并进一步利用扫描电子显微镜对样品的表面形貌进行表征。最后还提出探究该异质结构对石墨烯电学和热传导性质的影响。 Two-step chemical deposition (Two-Regime CVD) is used to realize the longitudinal heterojunction of graphene / boron nitride grown directly on copper-nickel alloy by utilizing the limited solubility of carbon atoms in copper-nickel alloy. In order to characterize the existence of graphene / boron nitride heterostructures and the lattice quality, we used a confocal Raman spectrometer to detect the sample transferred onto the silica substrate and further analyzed the surface of the sample using a scanning electron microscope Morphology was characterized. Finally, it is proposed to explore the effect of the heterostructure on the electrical and thermal conductivity of graphene.