Thinning and functionalization of few-layer graphene sheets by CF4 plasma treatment
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ArticleAuthors
Shen, Chao
Cao, Ronggen
Cheng, Yingchun

Ding, Fei
Huang, Gaoshan
Mei, Yongfeng
Schwingenschlögl, Udo

KAUST Department
Computational Physics and Materials Science (CPMS)Material Science and Engineering Program
Physical Science and Engineering (PSE) Division
Date
2012-06-01Online Publication Date
2012-06-01Print Publication Date
2012Permanent link to this record
http://hdl.handle.net/10754/315760
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Structural changes of few-layer graphene sheets induced by CF4 plasma treatment are studied by optical microscopy and Raman spectroscopy, together with theoretical simulation. Experimental results suggest a thickness reduction of few-layer graphene sheets subjected to prolonged CF4 plasma treatment while plasma treatment with short time only leads to fluorine functionalization on the surface layer by formation of covalent bonds. Raman spectra reveal an increase in disorder by physical disruption of the graphene lattice as well as functionalization during the plasma treatment. The F/CF3 adsorption and the lattice distortion produced are proved by theoretical simulation using density functional theory, which also predicts p-type doping and Dirac cone splitting in CF4 plasma-treated graphene sheets that may have potential in future graphene-based micro/nanodevices.Citation
Shen C, Huang G, Cheng Y, Cao R, Ding F, et al. (2012) Thinning and functionalization of few-layer graphene sheets by CF4 plasma treatment. Nanoscale Research Letters 7: 268. doi:10.1186/1556-276X-7-268.Publisher
Springer NatureJournal
Nanoscale Research LettersPubMed ID
22625875PubMed Central ID
PMC3458992Additional Links
http://www.nanoscalereslett.com/content/7/1/268ae974a485f413a2113503eed53cd6c53
10.1186/1556-276X-7-268
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