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Ultrafast Transition of Nonuniform Graphene to High-Quality Uniform Monolayer Films on Liquid Cu
Xin, Xing; Xu, Chuan; Zhang, Dingdong; Liu, Zhibo; Ma, Wei; Qian, Xitan; Chen, Mao-Lin; Du, Jinhong; Cheng, Hui-Ming; Ren, Wencai
2019-05-15
Source PublicationACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
Volume11Issue:19Pages:17629-17636
AbstractIt is essentially important to synthesize uniform graphene films with a controlled number of layers because their properties strongly depend on the number of layers. Although chemical vapor deposition (CVD) on Cu has been widely used to synthesize large-area graphene films, the growth on solid and liquid Cu (L-Cu) suffers from poor thickness uniformity with a great number of adlayers and difficulty in forming continuous films even after a long growth time of hours, respectively. Here, we found that nonuniform graphene films initially grown on solid Cu (S-Cu) foil can rapidly transform into continuously uniform monolayer graphene film on L-Cu within 3 min. Moreover, the films obtained show larger grain size, higher quality, electrical properties, and better performance in organic light-emitting diode applications than the original films grown on S-Cu foil. By using carbon isotope labeling, we revealed that the multilayer-to-monolayer transition of graphene on L-Cu experiences etching-"self-aligning"-coalescence processes. This two-step CVD method not only opens up a new way for the rapid growth of uniform monolayer graphene films but also provides helpful information for the controlled growth of uniform monolayers of other 2D materials such as monolayer h-BN.
Keywordgraphene 2D material film chemical vapor deposition number of layers
Indexed BySCI
Language英语
WOS IDWOS:000468364500055
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81088
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Xin, Xing,Xu, Chuan,Zhang, Dingdong,et al. Ultrafast Transition of Nonuniform Graphene to High-Quality Uniform Monolayer Films on Liquid Cu[J]. ACS APPLIED MATERIALS & INTERFACES,2019,11(19):17629-17636.
APA Xin, Xing.,Xu, Chuan.,Zhang, Dingdong.,Liu, Zhibo.,Ma, Wei.,...&Ren, Wencai.(2019).Ultrafast Transition of Nonuniform Graphene to High-Quality Uniform Monolayer Films on Liquid Cu.ACS APPLIED MATERIALS & INTERFACES,11(19),17629-17636.
MLA Xin, Xing,et al."Ultrafast Transition of Nonuniform Graphene to High-Quality Uniform Monolayer Films on Liquid Cu".ACS APPLIED MATERIALS & INTERFACES 11.19(2019):17629-17636.
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