title: Barrier formation at organic interfaces in a Cu(100)-benzenethiolate-pentacene heterostructure.
abstract: The energy level alignment at the metal-organic and organic-organic interfaces of the Cu(100)/benzenethiolate/pentacene heterostructure is studied by photoemission spectroscopy and discussed theoretically using a model that includes, in a consistent way, charge transfer, Pauli repulsion, intrinsic molecular dipoles, and interface screening as a function of coverage. Despite the different nature of the two interfaces, our model provides a unified explanation for the work-function changes at both junctions and enables us to determine the benzenethiolate orientation as a function of coverage.
authors.affiliation: Dipartimento di Fisica, Università di Roma La Sapienza, P. le Aldo Moro 2, I-00185 Roma, Italy.
authors.forename: M G
authors.initials: MG
authors.lastname: Betti
authors.forename: A
authors.initials: A
authors.lastname: Kanjilal
authors.forename: C
authors.initials: C
authors.lastname: Mariani
authors.forename: H
authors.initials: H
authors.lastname: Vázquez
authors.forename: Y J
authors.initials: YJ
authors.lastname: Dappe
authors.forename: J
authors.initials: J
authors.lastname: Ortega
authors.forename: F
authors.initials: F
authors.lastname: Flores