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Wrinkle-Free Single-Crystal Graphene Wafer Grown on Strain-Engineered Substrates
Deng B; Pang ZQ(庞振乾); Chen SL; Li X; Meng CX; Li JY; Liu MXi; Wu JX; Qi Y; Dang WHi; Yang H; Zhang YF; Zhang J; Kang N; Xu HQ; Fu Q; Qiu XH; Gao P; Wei YJ(魏宇杰); Liu ZF; Peng HL
Source PublicationACS NANO

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.

KeywordGraphene Wrinkle Ultraflat Strain Engineering Single Crystal Thermal Mismatch
Indexed BySCI ; EI
WOS IDWOS:000418990200060
WOS KeywordChemical-vapor-deposition ; Thermal-expansion ; Copper Foils ; Monolayer Graphene ; Raman-spectroscopy ; Layer Graphene ; Films ; Relaxation ; Cu ; Oxygen
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
Funding OrganizationNational 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)
Citation statistics
Cited Times:60[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Recommended Citation
GB/T 7714
Deng B,Pang ZQ,Chen SL,et al. Wrinkle-Free Single-Crystal Graphene Wafer Grown on Strain-Engineered Substrates[J]. ACS NANO,2017,11(12):12337-12345.
APA Deng B.,庞振乾.,Chen SL.,Li X.,Meng CX.,...&Peng HL.(2017).Wrinkle-Free Single-Crystal Graphene Wafer Grown on Strain-Engineered Substrates.ACS NANO,11(12),12337-12345.
MLA Deng B,et al."Wrinkle-Free Single-Crystal Graphene Wafer Grown on Strain-Engineered Substrates".ACS NANO 11.12(2017):12337-12345.
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