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Title:
Wrinkle-Free Single-Crystal Graphene Wafer Grown on Strain-Engineered Substrates
Author: Deng, Bing; Pang ZQ(庞震乾); Chen, Shulin; Li, Xin; Meng, Caixia; Li, Jiayu; Liu, Mengxi; Wu, Juanxia; Qi, Yue; Dang, Wenhui; Yang, Hao; Zhang, Yanfeng; Zhang, Jin; kang, Ning; Xu, Hongqi; Fu, Qiang; Qiu, Xiaohui; Gao, Peng; Wei YJ(魏宇杰); Liu, Zhongfan; Peng, Hailin
Source: ACS NANO
Issued Date: 2017-12-01
Volume: 11, Issue:12, Pages:12337-12345
Abstract:

Wrinkles are ubiquitous for graphene films grown on various substrates by chemical vapor deposition at high temperature due to the strain induced by thermal mismatch between the graphene and substrates, which greatly degrades the extraordinary properties of graphene. Here we show that the wrinkle formation of graphene grown on Cu substrates is strongly dependent on the crystallographic orientations. Wrinkle-free single-crystal graphene was grown on a wafer-scale twin-boundary-free single-crystal Cu(111) thin film fabricated on sapphire substrate through strain engineering. The wrinkle-free feature of graphene originated from the relatively small thermal expansion of the Cu(111) thin film substrate and the relatively strong interfacial coupling between Cu(111) and graphene, based on the strain analyses as well as molecular dynamics simulations. Moreover, we demonstrated the transfer of an ultraflat graphene film onto target substrates from the reusable single-crystal Cu(111)/sapphire growth substrate. The wrinkle-free graphene shows enhanced electrical mobility compared to graphene with wrinkles.

Keyword: graphene wrinkle ; ultraflat ; strain engineering ; single crystal ; thermal mismatch
Language: 英语
Indexed Type: SCI ; EI
DOI: 10.1021/acsnano.7b06196
DOC Type: Article
WOS Subject: Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Subject Extended: Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS Keyword Plus: CHEMICAL-VAPOR-DEPOSITION ; THERMAL-EXPANSION ; COPPER FOILS ; MONOLAYER GRAPHENE ; RAMAN-SPECTROSCOPY ; LAYER GRAPHENE ; FILMS ; RELAXATION ; CU ; OXYGEN
WOS ID: WOS:000418990200060
ISSN: 1936-0851
Funder: National Basic Research Program of China(2016YFA0200101 ; National Natural Science Foundation of China(51432002 ; Beijing Municipal Science & Technology Commission(Z161100002116002 ; Wenghongwu Keyan Yuanchuang jijin of Peking University(WHW201503) ; CAS-PKU Pioneer Cooperation Team ; Supercomputing Center of CAS ; 2014CB932500) ; 51520105003 ; Z161100002116021) ; 21525310 ; 11425211 ; 21603045 ; 51672007 ; 51502007)
Department: LNM微结构计算力学
Classification: 一类
Ranking: 1
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/72252
Appears in Collections:非线性力学国家重点实验室_期刊论文

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Recommended Citation:
Deng, Bing,Pang ZQ,Chen, Shulin,et al. Wrinkle-Free Single-Crystal Graphene Wafer Grown on Strain-Engineered Substrates[J]. ACS NANO,2017-12-01,11(12):12337-12345.
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