| Title | Wrinkle-Free Single-Crystal Graphene Wafer Grown on Strain-Engineered Substrates |
| Authors | Deng, Bing Pang, Zhenqian 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, Yujie Liu, Zhongfan Peng, Hailin |
| Affiliation | Peking Univ, Ctr Nanochem CNC, Beijing Sci & Engn Ctr Nanocarbons, BNLMS,Coll Chem & Mol Engn, Beijing 100871, Peoples R China. Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China. Peking Univ, Sch Phys, Int Ctr Quantum Mat, Electron Microscopy Lab, Beijing 100871, Peoples R China. Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Heilongjiang, Peoples R China. Natl Ctr Nanosci & Technol, CAS Ctr Excellence Nanosci, CAS Key Lab Standardizat & Measurement Nanotechno, Beijing 100190, Peoples R China. Univ Chinese Acad Sci, Beijing 100049, Peoples R China. Chinese Acad Sci, State Key Lab Catalysis, Collaborat Innovat Ctr Chem Energy Mat IChEM, Dalian Inst Chem Phys, Dalian 116023, Peoples R China. Peking Univ, Key Lab Phys & Chem Nanodevices, Beijing 100871, Peoples R China. Peking Univ, Dept Elect, Beijing 100871, Peoples R China. Peking Univ, Acad Adv Interdisciplinary Studies, Beijing 100871, Peoples R China. Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China. BGI, Beijing 100094, Peoples R China. Peking Univ, Ctr Nanochem CNC, Beijing Sci & Engn Ctr Nanocarbons, BNLMS,Coll Chem & Mol Engn, Beijing 100871, Peoples R China. Wei, YJ (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China. Liu, ZF Peng, HL (reprint author), BGI, Beijing 100094, Peoples R China. |
| Keywords | graphene wrinkle ultraflat strain engineering single crystal thermal mismatch CHEMICAL-VAPOR-DEPOSITION THERMAL-EXPANSION COPPER FOILS MONOLAYER GRAPHENE RAMAN-SPECTROSCOPY LAYER GRAPHENE FILMS RELAXATION CU OXYGEN |
| Issue Date | 2017 |
| Publisher | ACS NANO |
| Citation | ACS NANO. 2017, 11(12), 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. |
| URI | http://hdl.handle.net/20.500.11897/500520 |
| ISSN | 1936-0851 |
| DOI | 10.1021/acsnano.7b06196 |
| Indexed | SCI(E) EI PubMed Medline |
| Appears in Collections: | å å¦ä¸ å å å·¥ç¨ å¦é ¢ 物理学院 纳米器件物理与化学教育部重点实验室 信息科学技术学院 前沿交叉学科研究院 |
