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Fabrication of wrinkled graphene based on thermal-enhanced Rayleigh-Benard convection for field electron emission
Wenjun Chen1; Xuchun Gui1; Shasha Li1,2; Leilei Yang1; Binghao Liang1; Hai Zhu3; Juncong She1,2; Zikang Tang4
2017-12-21
Source PublicationCARBON
ISSN0008-6223
Volume129Pages:646-652
Abstract

Graphene with atomic sharp edges have been widely studied to demonstrate that it is an ideal material for field electron emission (FEE). However, FEE performance of graphene film with wrinkled or crumpled tip-structures is still unknown. Here, we introduce a facile method to fabricate wrinkled graphene (WG) at the liquid-air interface. The graphene synthesized by chemical vapor deposition self-shrinks into WG on the surface of ethanol/deionized water solution. The morphology, height and distribution of wrinkles in WG can be conveniently controlled by modulating the vertical temperature gradient of the solution. According to the theoretical analysis, the self-assembly of WG is due to the energy transfer from the decreasing Gibbs free energy and the work done by Rayleigh-Benard convection to the bending strain energy of WG. The substrate-independent formation of WG enables its direct transfer onto arbitrary hydrophilic surfaces to greatly enhance the hydrophobicity. Furthermore, the as-prepared WG shows more excellent FEE performance in comparison of the pristine graphene. The WG with higher wrinkles show a lower turn-on field, higher field enhancement factor and stable emission current. We believe that the method is potential to be universally applied in the manufacture of microstructures on other 2D materials for facilitating their practical applications. 

DOI10.1016/j.carbon.2017.12.071
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaChemistry ; Materials Science
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary
WOS IDWOS:000424885800075
PublisherPERGAMON-ELSEVIER SCIENCE LTD
The Source to ArticleWOS
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Cited Times [WOS]:3   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorXuchun Gui; Juncong She
Affiliation1.State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou,510275, PR China
2.Guangdong Province Key Laboratory of Display Material and Technology, Sun Yat-sen University, Guangzhou, 510275, PR China
3.State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, Sun Yat-sen University, Guangzhou 510275, PR China
4.Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau, PR China
Recommended Citation
GB/T 7714
Wenjun Chen,Xuchun Gui,Shasha Li,et al. Fabrication of wrinkled graphene based on thermal-enhanced Rayleigh-Benard convection for field electron emission[J]. CARBON,2017,129:646-652.
APA Wenjun Chen,Xuchun Gui,Shasha Li,Leilei Yang,Binghao Liang,Hai Zhu,Juncong She,&Zikang Tang.(2017).Fabrication of wrinkled graphene based on thermal-enhanced Rayleigh-Benard convection for field electron emission.CARBON,129,646-652.
MLA Wenjun Chen,et al."Fabrication of wrinkled graphene based on thermal-enhanced Rayleigh-Benard convection for field electron emission".CARBON 129(2017):646-652.
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