Multiscale simulations of the early stages of the growth of graphene on copper

P. Gaillard, T. Chanier, L. Henrard, P. Moskovkin, S. Lucas

    Résultats de recherche: Contribution à un journal/une revueArticleRevue par des pairs

    353 Téléchargements (Pure)

    Résumé

    Abstract We have performed multiscale simulations of the growth of graphene on defect-free copper (111) in order to model the nucleation and growth of graphene flakes during chemical vapour deposition and potentially guide future experimental work. Basic activation energies for atomic surface diffusion were determined by ab initio calculations. Larger scale growth was obtained within a kinetic Monte Carlo approach (KMC) with parameters based on the ab initio results. The KMC approach counts the first and second neighbours to determine the probability of surface diffusion. We report qualitative results on the size and shape of the graphene islands as a function of deposition flux. The dominance of graphene zigzag edges for low deposition flux, also observed experimentally, is explained by its larger dynamical stability that the present model fully reproduced.

    langue originaleAnglais
    Numéro d'article20440
    Pages (de - à)11-18
    Nombre de pages8
    journalSurface Science
    Volume637-638
    Les DOIs
    Etat de la publicationPublié - 2015

    Empreinte digitale

    Examiner les sujets de recherche de « Multiscale simulations of the early stages of the growth of graphene on copper ». Ensemble, ils forment une empreinte digitale unique.
    • Graphene 2015

      Luc Henrard (Poster)

      9 mars 201513 mars 2015

      Activité: Types de Participation ou d'organisation d'un événementParticipation à une conférence, un congrès

    Contient cette citation