title: Multiscale modeling of the electrostatic impact of self-assembled monolayers used as gate dielectric treatment in organic thin-film transistors.
abstract: This study sheds light on the microscopic mechanisms by which self-assembled monolayers (SAMs) determine the onset voltage in organic thin-film transistors (OTFTs). Experiments and modeling are combined to investigate the self-assembly and electrostatic interaction processes in prototypical OTFT structures (SiO2/SAM/pentacene), where alkylated and fluoroalkylated silane SAMs are compared. The results highlight the coverage-dependent impact of the SAM on the density of semiconductor states and enable the rationalization and the control of the OTFT characteristics.
authors.affiliation: Large Area Electronics, Imec , Kapeldreef 75, Leuven 3001, Belgium.
authors.forename: Alexander
authors.initials: A
authors.lastname: Mityashin
authors.forename: Otello Maria
authors.initials: OM
authors.lastname: Roscioni
authors.forename: Luca
authors.initials: L
authors.lastname: Muccioli
authors.forename: Claudio
authors.initials: C
authors.lastname: Zannoni
authors.forename: Victor
authors.initials: V
authors.lastname: Geskin
authors.forename: Jérôme
authors.initials: J
authors.lastname: Cornil
authors.forename: Dimitri
authors.initials: D
authors.lastname: Janssen
authors.forename: Soeren
authors.initials: S
authors.lastname: Steudel
authors.forename: Jan
authors.initials: J
authors.lastname: Genoe
authors.forename: Paul
authors.initials: P
authors.lastname: Heremans
keywords: coverage; electrostatic disorder; microelectrostatic model; molecular dynamics; onset voltage; pentacene