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题名: Chemical vapor deposition of bilayer graphene with layer-resolved growth through dynamic pressure control
作者: Luo, Birong1; Chen, Bingyan2, 3; Wang, Anle4, 5; Geng, Dechao1; Xu, Jie1; Wang, Huaping1; Zhang, Zhiyong2, 3; Peng, Lianmao2, 3; Xu, Zhiping4, 5; Yu, Gui1, 6
刊名: JOURNAL OF MATERIALS CHEMISTRY C
发表日期: 2016
卷: 4, 期:31, 页:7464-7471
收录类别: SCI
英文摘要: In this work, a dynamic pressure atmosphere is constructed through cutting off the gas outlet in the chemical vapor deposition process, in which the total pressure of the system uniformly varies with a gradient and the associated growth environment changes. Through modulating the variation rate of system pressure, the layer-resolved growth of graphene from single-layer graphene grains to bilayer graphene patches and then ultimately larger-area bilayer graphene films has been realized. Based on the analysis results obtained, it is shown that the self-limiting effect of single-layer graphene on Cu foil can be broken by the accumulation of feedstock (CH4/H-2) during this dynamic process to enable the continued growth of bilayer graphene. The electrical transport studies demonstrate that devices made of the as-grown bilayer graphene exhibit obvious tunability of the band gap, showing the typical characteristics of AB stacked bilayer graphene.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35367
Appears in Collections:有机固体实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China
2.Peking Univ, Key Lab Phys & Chem Nanodevices, Beijing 100871, Peoples R China
3.Peking Univ, Dept Elect, Beijing 100871, Peoples R China
4.Tsinghua Univ, Appl Mech Lab, Dept Engn Mech, Beijing 100084, Peoples R China
5.Tsinghua Univ, Ctr Nano & Micro Mech, Beijing 100084, Peoples R China
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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