title: Universal crossover from band to hopping conduction in molecular organic semiconductors.
abstract: The charge transport in a variety of herringbone-stacked organic molecular semiconductors is investigated in the temperature range from 10 to 550 K. A crossover from coherent bandlike charge transport with mobilities up to several thousand cm (2)/V s at low temperature to an incoherent hopping motion at high temperatures is observed. This is attributed to the localization of the charge carrier due to increased electron-phonon interaction and, finally, the formation of a lattice polaron.
authors.affiliation: Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey 07974, USA.
authors.forename: J H
authors.initials: JH
authors.lastname: Schön
authors.forename: C
authors.initials: C
authors.lastname: Kloc
authors.forename: B
authors.initials: B
authors.lastname: Batlogg