Controllable growth of 1-7 layers of graphene by chemical vapour deposition

被引:125
|
作者
Tu, Zhiqiang [1 ]
Liu, Zhuchen [1 ]
Li, Yongfeng [1 ]
Yang, Fan [1 ]
Zhang, Liqiang [1 ]
Zhao, Zhen [1 ]
Xu, Chunming [1 ]
Wu, Shangfei [2 ]
Liu, Hongwen [2 ]
Yang, Haitao [2 ]
Richard, Pierre [2 ]
机构
[1] China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
[2] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China
基金
中国国家自然科学基金;
关键词
SCALE SYNTHESIS; HIGH-QUALITY; UNIFORM; FILMS; GRAINS; ALLOY; PHASE; FOILS;
D O I
10.1016/j.carbon.2014.02.061
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We report that graphene films with thickness ranging from 1 to 7 layers can be controllably synthesized on the surface of polycrystalline copper by a chemical vapour deposition method. The number of layers of graphene is controlled precisely by regulating the flow ratio of CH4 and H-2, the reaction pressure, the temperature and the reaction time. The synthesized graphene films were characterized by scanning electron microscopy, transmission electron microscopy, selected area electron diffraction, X-ray diffraction and Raman spectroscopy. In addition, the graphene films transferred from copper to other substrates are found to have a good optical transmittance that makes them suitable for transparent conductive materials. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:252 / 258
页数:7
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