孙振翠^1，2，， 杨诚^1，*

（  1、山东师范大学物理与电子科学学院，济南 250014；       2、山东交通学院理学院，济南 250357；  ）

摘要： 在Au沉积层的辅助下，通过化学气相沉积方法在Si衬底上成功合成具有规则取向且具有较高光学特性的Graphene-ZnO纳米棒复合结构。用SEM、HRTEM、EDS、XRD、Raman和PL谱分析不同条件下获得ZnO纳米结构的形貌、结晶质量和光学特性。分析了graphene和Au层的单个和复合效应。结果显示在单独Au催化或单独graphene层的辅助下，只能获得自由取向的ZnO纳米棒或纳米线，发光谱出现较宽的绿色发光带。在Au-graphene复合层的辅助下，即在graphene层和Au层的共同辅助下，得到规则取向的ZnO纳米棒，且具有较高的紫外发光峰。
关键词： Graphene-ZnO 纳米棒复合结构；Au层；Graphene层；化学气相沉积法

SUN Zhencui^1,2,， YANG Cheng^1,*

（  1、School of Physics and Electronics, Shandong Normal University, Jinan 250014；       2、School of Science, Shandong Jiaotong University, Jinan 250023；  ）

Abstract： In this paper, aligned grapheme-ZnO nanorods hybrid heterostructure with high optical quality is synthesized on the Si substrate with the assist of Au predeposition layer via chemical vapor deposition (CVD) method. The individual and combined effects of graphene and Au layer are analyzed in our experiment. The results show that only randomly oriented ZnO nanorods or nanowires with a broad green emission band are obtained with individual Au layer or individual graphene layer as nucleation sites. Aligned ZnO nanorods with high UV emission peaks were obtained with the assist of Au-graphene hybrid layer. The results verify that the Au-graphene hybrid layer can provide favorable nucleation sites for the fabrication of aligned ZnO nanorods. The graphene layer in the Au-graphene hybrid layer plays a crucial role for the alignment of ZnO growth and the Au layer in the Au-graphene hybrid layer can limit the graphene oxidation and catalyze synthesis of rods-like ZnO nanostructures.
Keywords： grapheme-ZnO nanorods hybrid heterostructure; Au layer; graphene layer; chemical vapor deposition (CVD) method

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