journal article·2025-01

Carbon–Oxygen Radical Assisted Growth of Defect‐Free Graphene Films Using Low‐Temperature Chemical Vapor Deposition

Haiyang Liu, Yanglizhi Li, Yangfan Wu, Dingkun Qin, Xia Qiu, Zhen Wang, Qingyu Zhou, Shuming Yu, Qin Li, Haoxiang Li, Sheng Li, Chaojie Yu, Yueming Hu, Shenxing Wang, Buhang Chen, Xiaofeng Song, Jiawei Qiang, Lin Zhou, Yiwei Li, Nan Xu, Mengxi Liu, Wanjian Yin, Xiaoli Sun, Luzhao Sun, Zhongfan Liu

Small· Volume 21· Issue 1
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Abstract

Abstract Low‐temperature chemical vapor deposition growth of graphene films is a long‐term pursuit in the graphene synthesis field because of the low energy consumption, short heating‐cooling process and low wrinkle density of as‐obtained films. However, insufficient energy supply at low temperature (below 850 °C) usually leads to the difficulty in carbon source dissociation, graphene growth, and defect healing. Herein, a Carbon–Oxygen (C─O) radical assisted strategy is proposed for low‐temperature growth of defect‐free, wrinkle‐free, and single‐crystalline graphene films by using methanol precursor. We provide a deep insight into the growth process fueled by methanol precursor, unveiling the dissociation pathway of methanol and the roles of intermediate C─O radicals in carbon attaching and assembling to graphene lattice without defect formation. This method shows promising prospects in the cost‐effective production of high‐quality graphene films and provides inspiration for growing other 2D materials.
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Research context

OpenAlex topics: Graphene research and applications · Ga2O3 and related materials · 2D Materials and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Center for Nanochemistry Beijing Science and Engineering Center for Nanocarbons Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering Peking University Beijing 100871 P. R. China

Technology Innovation Center of Graphene Metrology and Standardization for State Market Regulation Beijing Graphene Institute Beijing 100095 P. R. China

CAS Key Laboratory of Standardization and Measurement for Nanotechnology National Center for Nanoscience and Technology Beijing 100190 P. R. China

School of Future Technology University of Chinese Academy of Sciences Beijing 100049 P. R. China

Institute for Advanced Studies (IAS) Wuhan University Wuhan 430072 P. R. China

Academy for Advanced Interdisciplinary Studies Peking University Beijing 100871 P. R. China

School of Physics and Electronics Shandong Normal University Jinan 250014 P. R. China

College of Energy Soochow Institute for Energy and Materials Innovations (SIEMIS) Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province Soochow University Suzhou 215006 P. R. China

College of Materials Science and Technology Beijing University of Chemical Technology Beijing 100029 P. R. China

School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 P. R. China

Funding

National Natural Science Foundation of China · Youth Innovation Promotion Association of the Chinese Academy of Sciences · Natural Science Foundation of Hubei Province · Fundamental Research Funds for the Central Universities

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