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Title: Modeling the effect of doping on the catalyst-assisted growth and field emission properties of plasma-grown graphene sheet

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.

Authors:
; ;  [1]
  1. Department of Applied Physics, Delhi Technological University (DTU), Shahbad Daulatpur, Bawana Road, Delhi-110042 (India)
Publication Date:
OSTI Identifier:
22599953
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 23; Journal Issue: 8; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 75 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

Citation Formats

Gupta, Neha, Sharma, Suresh C., and Sharma, Rinku. Modeling the effect of doping on the catalyst-assisted growth and field emission properties of plasma-grown graphene sheet. United States: N. p., 2016. Web. doi:10.1063/1.4960562.
Gupta, Neha, Sharma, Suresh C., & Sharma, Rinku. Modeling the effect of doping on the catalyst-assisted growth and field emission properties of plasma-grown graphene sheet. United States. doi:10.1063/1.4960562.
Gupta, Neha, Sharma, Suresh C., and Sharma, Rinku. 2016. "Modeling the effect of doping on the catalyst-assisted growth and field emission properties of plasma-grown graphene sheet". United States. doi:10.1063/1.4960562.
@article{osti_22599953,
title = {Modeling the effect of doping on the catalyst-assisted growth and field emission properties of plasma-grown graphene sheet},
author = {Gupta, Neha and Sharma, Suresh C. and Sharma, Rinku},
abstractNote = {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.},
doi = {10.1063/1.4960562},
journal = {Physics of Plasmas},
number = 8,
volume = 23,
place = {United States},
year = 2016,
month = 8
}
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