Designed growth of large bilayer graphene with arbitrary twist angles

Liu, Can1,2; Li, Zehui1; Qiao, Ruixi3,4; Wang, Qinghe1; Zhang, Zhibin1; Liu, Fang1; Zhou, Ziqi1; Shang, Nianze1; Fang, Hongwei5; Wang, Meixiao5; Liu, Zhongkai5; Feng, Zuo1; Cheng, Yang1; Wu, Heng6; Gong, Dewei1; Liu, Song7; Zhang, Zhensheng7; Zou, Dingxin7; Fu, Ying8; He, Jun9; Hong, Hao1; Wu, Muhong3,10,11; Gao, Peng3; Tan, Ping-Heng6; Wang, Xinqiang1; Yu, Dapeng7; Wang, Enge3,8,12; Wang, Zhu-Jun5; Liu, Kaihui1,3

2022-09-01

10.1038/s41563-022-01361-8

NATURE MATERIALS   Impact Factor & Quartile

1476-1122

1476-4660

["The production of large-area twisted bilayer graphene (TBG) with controllable angles is a prerequisite for proceeding with its massive applications. However, most of the prevailing strategies to fabricate twisted bilayers face great challenges, where the transfer methods are easily stuck by interfacial contamination, and direct growth methods lack the flexibility in twist-angle design. Here we develop an effective strategy to grow centimetre-scale TBG with arbitrary twist angles (accuracy, <1.0 degrees). The success in accurate angle control is realized by an angle replication from two prerotated single-crystal Cu(111) foils to form a Cu/TBG/Cu sandwich structure, from which the TBG can be isolated by a custom-developed equipotential surface etching process. The accuracy and consistency of the twist angles are unambiguously illustrated by comprehensive characterization techniques, namely, optical spectroscopy, electron microscopy, photoemission spectroscopy and photocurrent spectroscopy. Our work opens an accessible avenue for the designed growth of large-scale two-dimensional twisted bilayers and thus lays the material foundation for the future applications of twistronics at the integration level.","Angle tunability in twisted bilayer graphene is crucial in promoting its applications of twistronics. Here an angle replication strategy is developed to obtain centimetre-scale bilayer graphene with arbitrary twist angles."]

SCI

English

NI Journal Papers

Others

Guangdong Major Project of Basic and Applied Basic Research[2021B0301030002] ; Beijing Natural Science Foundation[JQ19004] ; National Natural Science Foundation of China["52025023","51991342","52021006","11888101","92163206","12027804","52172035","52100115","52125307","T2188101"] ; National Key R&D Program of China["2021YFB3200303","2021YFA1400201","2021YFA1400502","2018YFA0703700"] ; Key R&D Program of Guangdong Province["2020B010189001","2019B010931001","2018B030327001"] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB33000000] ; Pearl River Talent Recruitment Program of Guangdong Province[2019ZT08C321]

Chemistry ; Materials Science ; Physics

Chemistry, Physical ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000854745400004

NATURE PORTFOLIO

MATERIALS SCIENCE

Web of Science

1.Peking Univ, Frontiers Sci Ctr Nanooptoelect, Sch Phys, State Key Lab Mesoscop Phys, Beijing, Peoples R China
2.Renmin Univ China, Dept Phys, Beijing, Peoples R China
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10.Peking Univ, Interdisciplinary Inst Light Element Quantum Mat, Beijing, Peoples R China
11.Peking Univ, Res Ctr Light Element Adv Mat, Beijing, Peoples R China
12.Liaoning Univ, Sch Phys, Shenyang, Peoples R China

Liu, Can,Li, Zehui,Qiao, Ruixi,et al. Designed growth of large bilayer graphene with arbitrary twist angles[J]. NATURE MATERIALS,2022.

Liu, Can.,Li, Zehui.,Qiao, Ruixi.,Wang, Qinghe.,Zhang, Zhibin.,...&Liu, Kaihui.(2022).Designed growth of large bilayer graphene with arbitrary twist angles.NATURE MATERIALS.

Liu, Can,et al."Designed growth of large bilayer graphene with arbitrary twist angles".NATURE MATERIALS (2022).