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

    Year: 2020

    Journal: Philos. Mag., Volume 100, OCT 1, page 2491–2502

    Authors: Amer, MS; Mohammed, MK; Al Mafrage, AM

    Organizations: King Abdullah University of Science and Technology (KAUST)King Abdullah University of Science & Technology

    Keywords: Graphene; graphite; electrical conductivity; density-functional theory

    We measured the electric conductivity of large (25 x 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.
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