title: Modification of electronic properties of graphene with self-assembled monolayers.
abstract: Integration of organic and inorganic electronic materials is one of the emerging approaches to achieve novel material functionalities. Here, we demonstrate a stable self-assembled monolayer of an alkylsilane grown at the surface of graphite and graphene. Detailed characterization of the system using scanning probe microscopy, X-ray photoelectron spectroscopy, and transport measurements reveals the monolayer structure and its effect on the electronic properties of graphene. The monolayer induces a strong surface doping with a high density of mobile holes (n > 10(13) cm(-2)). The ability to tune electronic properties of graphene via stable molecular self-assembly, including selective doping of steps, edges, and other defects, may have important implications in future graphene electronics.
authors.affiliation: Department of Physics, Rutgers University, Piscataway, New Jersey 08854, USA.
authors.forename: B
authors.initials: B
authors.lastname: Lee
authors.forename: Y
authors.initials: Y
authors.lastname: Chen
authors.forename: F
authors.initials: F
authors.lastname: Duerr
authors.forename: D
authors.initials: D
authors.lastname: Mastrogiovanni
authors.forename: E
authors.initials: E
authors.lastname: Garfunkel
authors.forename: E Y
authors.initials: EY
authors.lastname: Andrei
authors.forename: V
authors.initials: V
authors.lastname: Podzorov