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Ultrafast growth of nanocrystalline graphene films by quenching and grain-size-dependent strength and bandgap opening
Zhao, Tong; Xu, Chuan; Ma, Wei; Liu, Zhibo; Zhou, Tianya; Liu, Zhen; Feng, Shun; Zhu, Mengjian; Kang, Ning; Sun, Dong-Ming; Cheng, Hui-Ming; Ren, Wencai
2019-10-24
Source PublicationNATURE COMMUNICATIONS
ISSN2041-1723
Volume10
AbstractNanocrystallization is a well-known strategy to dramatically tune the properties of materials; however, the grain-size effect of graphene at the nanometer scale remains unknown experimentally because of the lack of nanocrystalline samples. Here we report an ultrafast growth of graphene films within a few seconds by quenching a hot metal foil in liquid carbon source. Using Pt foil and ethanol as examples, four kinds of nanocrystalline graphene films with average grain size of similar to 3.6, 5.8, 8.0, and 10.3 nm are synthesized. It is found that the effect of grain boundary becomes more pronounced at the nanometer scale. In comparison with pristine graphene, the 3.6 nm-grained film retains high strength (101 GPa) and Young's modulus (576 GPa), whereas the electrical conductivity is declined by over 100 times, showing semiconducting behavior with a bandgap of similar to 50 meV. This liquid-phase precursor quenching method opens possibilities for ultrafast synthesis of typical graphene materials and other two-dimensional nanocrystalline materials.
Indexed BySCI
Language英语
WOS IDWOS:000492140800010
PublisherNATURE PUBLISHING GROUP
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80688
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Zhao, Tong,Xu, Chuan,Ma, Wei,et al. Ultrafast growth of nanocrystalline graphene films by quenching and grain-size-dependent strength and bandgap opening[J]. NATURE COMMUNICATIONS,2019,10.
APA Zhao, Tong.,Xu, Chuan.,Ma, Wei.,Liu, Zhibo.,Zhou, Tianya.,...&Ren, Wencai.(2019).Ultrafast growth of nanocrystalline graphene films by quenching and grain-size-dependent strength and bandgap opening.NATURE COMMUNICATIONS,10.
MLA Zhao, Tong,et al."Ultrafast growth of nanocrystalline graphene films by quenching and grain-size-dependent strength and bandgap opening".NATURE COMMUNICATIONS 10(2019).
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