Single-crystal two-dimensional material epitaxy on tailored non-single-crystal substrates

Xin Li, Guilin Wu, Leining Zhang, Deping Huang, Yunqing Li, Ruiqi Zhang, Meng Li, Lin Zhu, Jing Guo, Tianlin Huang, Jun Shen, Xingzhan Wei, Ka Man Yu, Jichen Dong, Michael S. Altman, Rodney S. Ruoff, Yinwu Duan, Jie Yu, Zhujun Wang, Xiaoxu Huang (), Feng Ding (), Haofei Shi () and Wenxin Tang
Additional contact information
Xin Li: Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences
Guilin Wu: College of Materials Science and Engineering, Chongqing University
Leining Zhang: Institute for Basic Science (IBS)
Deping Huang: Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences
Yunqing Li: Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences
Ruiqi Zhang: Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences
Meng Li: Electron Microscope Center, Chongqing University
Lin Zhu: Electron Microscope Center, Chongqing University
Jing Guo: College of Materials Science and Engineering, Chongqing University
Tianlin Huang: College of Materials Science and Engineering, Chongqing University
Jun Shen: Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences
Xingzhan Wei: Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences
Ka Man Yu: The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon
Jichen Dong: Institute for Basic Science (IBS)
Michael S. Altman: The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon
Rodney S. Ruoff: Institute for Basic Science (IBS)
Yinwu Duan: Chongqing Key Laboratory of Graphene Film Manufacturing
Jie Yu: Chongqing Key Laboratory of Graphene Film Manufacturing
Zhujun Wang: Shanghai Tech University
Xiaoxu Huang: College of Materials Science and Engineering, Chongqing University
Feng Ding: Institute for Basic Science (IBS)
Haofei Shi: Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences
Wenxin Tang: Electron Microscope Center, Chongqing University

Nature Communications, 2022, vol. 13, issue 1, 1-8

Abstract: Abstract The use of single-crystal substrates as templates for the epitaxial growth of single-crystal overlayers has been a primary principle of materials epitaxy for more than 70 years. Here we report our finding that, though counterintuitive, single-crystal 2D materials can be epitaxially grown on twinned crystals. By establishing a geometric principle to describe 2D materials alignment on high-index surfaces, we show that 2D material islands grown on the two sides of a twin boundary can be well aligned. To validate this prediction, wafer-scale Cu foils with abundant twin boundaries were synthesized, and on the surfaces of these polycrystalline Cu foils, we have successfully grown wafer-scale single-crystal graphene and hexagonal boron nitride films. In addition, to greatly increasing the availability of large area high-quality 2D single crystals, our discovery also extends the fundamental understanding of materials epitaxy.

Date: 2022
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DOI: 10.1038/s41467-022-29451-w

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