Large-area transfer of two-dimensional materials free of cracks, contamination and wrinkles via controllable conformal contact

Yixuan Zhao, Yuqing Song, Zhaoning Hu, Wendong Wang, Zhenghua Chang, Yan Zhang, Qi Lu, Haotian Wu, Junhao Liao, Wentao Zou, Xin Gao, Kaicheng Jia, La Zhuo, Jingyi Hu, Qin Xie, Rui Zhang, Xiaorui Wang, Luzhao Sun, Fangfang Li, Liming Zheng, Ming Wang, Jiawei Yang, Boyang Mao, Tiantian Fang, Fuyi Wang, Haotian Zhong, Wenlin Liu, Rui Yan, Jianbo Yin, Yanfeng Zhang, Yujie Wei (), Hailin Peng (), Li Lin () and Zhongfan Liu ()
Additional contact information
Yixuan Zhao: Peking University
Yuqing Song: Peking University
Zhaoning Hu: Beijing Graphene Institute
Wendong Wang: University of Manchester
Zhenghua Chang: LNM, Institute of Mechanics Chinese Academy of Sciences
Yan Zhang: Beijing Graphene Institute
Qi Lu: Beijing Graphene Institute
Haotian Wu: Beijing Graphene Institute
Junhao Liao: Peking University
Wentao Zou: Beijing Graphene Institute
Xin Gao: Peking University
Kaicheng Jia: Peking University
La Zhuo: Beijing Graphene Institute
Jingyi Hu: Peking University
Qin Xie: Peking University
Rui Zhang: University of Manchester
Xiaorui Wang: Beijing Graphene Institute
Luzhao Sun: Beijing Graphene Institute
Fangfang Li: Beijing Graphene Institute
Liming Zheng: Peking University
Ming Wang: Beijing Graphene Institute
Jiawei Yang: Beijing Graphene Institute
Boyang Mao: University of Manchester
Tiantian Fang: Chinese Academy of Sciences
Fuyi Wang: Chinese Academy of Sciences
Haotian Zhong: Beijing Graphene Institute
Wenlin Liu: Peking University
Rui Yan: Beijing Graphene Institute
Jianbo Yin: Beijing Graphene Institute
Yanfeng Zhang: Peking University
Yujie Wei: LNM, Institute of Mechanics Chinese Academy of Sciences
Hailin Peng: Peking University
Li Lin: Peking University
Zhongfan Liu: Peking University

Nature Communications, 2022, vol. 13, issue 1, 1-10

Abstract: Abstract The availability of graphene and other two-dimensional (2D) materials on a wide range of substrates forms the basis for large-area applications, such as graphene integration with silicon-based technologies, which requires graphene on silicon with outperforming carrier mobilities. However, 2D materials were only produced on limited archetypal substrates by chemical vapor deposition approaches. Reliable after-growth transfer techniques, that do not produce cracks, contamination, and wrinkles, are critical for layering 2D materials onto arbitrary substrates. Here we show that, by incorporating oxhydryl groups-containing volatile molecules, the supporting films can be deformed under heat to achieve a controllable conformal contact, enabling the large-area transfer of 2D films without cracks, contamination, and wrinkles. The resulting conformity with enhanced adhesion facilitates the direct delamination of supporting films from graphene, providing ultraclean surfaces and carrier mobilities up to 1,420,000 cm2 V−1 s−1 at 4 K.

Date: 2022
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DOI: 10.1038/s41467-022-31887-z

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