Layer Dependence of Graphene for Oxidation Resistance of Cu Surface  

铜表面抗氧化性能与其覆盖石墨烯的层数依赖关系研究

作　　者：宋雨晴[1] 王晓平[1,2,3] 

机构地区：[1]中国科学技术大学物理系,合肥230026 [2]中国科学技术大学微尺度物质科学国家实验室,合肥230026 [3]中国科学技术大学量子信息和量子物理协同创新中心,合肥230026

出　　处：《Chinese Journal of Chemical Physics》2017年第2期193-199,I0002,共8页化学物理学报（英文）

摘　　要：We studied the oxidation resistance of graphene-coated Cu surface and its layer dependence by directly growing monolayer graphene with different multilayer structures coexisted, di- minishing the influence induced by residue and transfer technology. It is found that the Cu surface coated with the monolayer graphene demonstrate tremendous difference in oxidation pattern and oxidation rate, compared to that coated with the bilayer graphene, which is considered to be originated from the strain-induced linear oxidation channel in monolayer graphene and the intersection of easily-oxidized directions in each layer of bilayer graphene, respectively. We reveal that the defects on the graphene basal plane but not the boundaries are the main oxidation channel for Cu surface under graphene protection. Our finding indicates that compared to putting forth efforts to improve the quality of monolayer graphene by reducing defects, depositing multilayer graphene directly on metal is a simple and effective way to enhance the oxidation resistance of graphene-coated metals.

关 键 词：GRAPHENE Chemical vapor deposition Oxidation resistance DEFECT 

分 类 号：O[理学]