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Author Gupta, Neha ♦ Sharma, Suresh C. ♦ Sharma, Rinku
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PLASMA PHYSICS AND FUSION TECHNOLOGY ♦ CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ♦ BORON ♦ CATALYSTS ♦ COMPARATIVE EVALUATIONS ♦ COMPUTERIZED SIMULATION ♦ DENSITY ♦ DOPED MATERIALS ♦ FIELD EMISSION ♦ GRAPHENE ♦ HEIGHT ♦ HYDROCARBONS ♦ IONS ♦ NANOPARTICLES ♦ NITROGEN ♦ PLASMA ♦ SHEETS ♦ SURFACES ♦ THICKNESS
Abstract A theoretical model describing the effect of doping on the plasma-assisted catalytic growth of graphene sheet has been developed. The model accounts the charging rate of the graphene sheet, kinetics of all the plasma species, including the doping species, and the growth rate of graphene nuclei and graphene sheet due to surface diffusion, and accretion of ions on the catalyst nanoparticle. Using the model, it is observed that nitrogen and boron doping can strongly influence the growth and field emission properties of the graphene sheet. The results of the present investigation indicate that nitrogen doping results in reduced thickness and shortened height of the graphene sheet; however, boron doping increases the thickness and height of the graphene sheet. The time evolutions of the charge on the graphene sheet and hydrocarbon number density for nitrogen and boron doped graphene sheet have also been examined. The field emission properties of the graphene sheet have been proposed on the basis of the results obtained. It is concluded that nitrogen doped graphene sheet exhibits better field emission characteristics as compared to undoped and boron doped graphene sheet. The results of the present investigation are consistent with the existing experimental observations.
ISSN 1070664X
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-08-15
Publisher Place United States
Journal Physics of Plasmas
Volume Number 23
Issue Number 8


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