title: The work function of few-layer graphene.
abstract: A theoretical and experimental study of the work function of few-layer graphene is reported. The influence of the number of layers on the work function is investigated in the presence of a substrate, a molecular dipole layer, and combinations of the two. The work function of few-layer graphene is almost independent of the number of layers with only a difference between monolayer and multilayer graphene of about 60 meV. In the presence of a charge-donating substrate the charge distribution is found to decay exponentially away from the substrate and this is directly reflected in the work function of few-layer graphene. A dipole layer changes the work function only when placed in between the substrate and few-layer graphene through a change of the charge transfer between the two.
authors.affiliation: Departement Fysica, Universiteit Antwerpen, Groenenborgerlaan 171, B-2020 Antwerpen, Belgium.
authors.forename: O
authors.initials: O
authors.lastname: Leenaerts
authors.forename: B
authors.initials: B
authors.lastname: Partoens
authors.forename: F M
authors.initials: FM
authors.lastname: Peeters
authors.forename: A
authors.initials: A
authors.lastname: Volodin
authors.forename: C
authors.initials: C
authors.lastname: Van Haesendonck