Graphene to graphite; a layer by layer experimental measurements and density function theory calculations of electric conductivity

Maher S. Amer; Mohammed K. Mohammed; Ali M. Al Mafrage

doi:10.1080/14786435.2020.1766710

Graphene to graphite; a layer by layer experimental measurements and density function theory calculations of electric conductivity

Maher S. Amer, Mohammed K. Mohammed, Ali M. Al Mafrage

King Abdullah University of Science and Technology

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

We measured the electric conductivity of large (25 × 50 mm) graphene films as a function of number of layers in the range of 1–20 layers. We also calculated the energy gap for such samples using density function theory. Our results showed a conductivity slightly above that of ITO for monolayer graphene and an exponential decrease as the number of graphene layers increased. Both experimental and simulation results showed a convergence of graphene into graphite at as little as 18–20 layers.

Original language	English (US)
Pages (from-to)	1-12
Number of pages	12
Journal	Philosophical Magazine
DOIs	https://doi.org/10.1080/14786435.2020.1766710
State	Published - May 26 2020

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST). For computer time, this research used the resources of the Supercomputing Laboratory at KAUST.

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10.1080/14786435.2020.1766710

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title = "Graphene to graphite; a layer by layer experimental measurements and density function theory calculations of electric conductivity",

abstract = "We measured the electric conductivity of large (25 × 50 mm) graphene films as a function of number of layers in the range of 1–20 layers. We also calculated the energy gap for such samples using density function theory. Our results showed a conductivity slightly above that of ITO for monolayer graphene and an exponential decrease as the number of graphene layers increased. Both experimental and simulation results showed a convergence of graphene into graphite at as little as 18–20 layers.",

author = "Amer, {Maher S.} and Mohammed, {Mohammed K.} and {Al Mafrage}, {Ali M.}",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST). For computer time, this research used the resources of the Supercomputing Laboratory at KAUST.",

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AU - Amer, Maher S.

AU - Mohammed, Mohammed K.

AU - Al Mafrage, Ali M.

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST). For computer time, this research used the resources of the Supercomputing Laboratory at KAUST.

PY - 2020/5/26

Y1 - 2020/5/26

N2 - We measured the electric conductivity of large (25 × 50 mm) graphene films as a function of number of layers in the range of 1–20 layers. We also calculated the energy gap for such samples using density function theory. Our results showed a conductivity slightly above that of ITO for monolayer graphene and an exponential decrease as the number of graphene layers increased. Both experimental and simulation results showed a convergence of graphene into graphite at as little as 18–20 layers.

AB - We measured the electric conductivity of large (25 × 50 mm) graphene films as a function of number of layers in the range of 1–20 layers. We also calculated the energy gap for such samples using density function theory. Our results showed a conductivity slightly above that of ITO for monolayer graphene and an exponential decrease as the number of graphene layers increased. Both experimental and simulation results showed a convergence of graphene into graphite at as little as 18–20 layers.

UR - http://hdl.handle.net/10754/662993

UR - https://www.tandfonline.com/doi/full/10.1080/14786435.2020.1766710

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SP - 1

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JO - Philosophical Magazine

JF - Philosophical Magazine

ER -

Graphene to graphite; a layer by layer experimental measurements and density function theory calculations of electric conductivity

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