title: Band-bending in organic semiconductors: the role of alkali-halide interlayers.
abstract: Band-bending in organic semiconductors, occurring at metal/alkali-halide cathodes in organic-electronic devices, is experimentally revealed and electrostatically modeled. Metal-to-organic charge transfer through the insulator, rather than doping of the organic by alkali-metal ions, is identified as the origin of the observed band-bending, which is in contrast to the localized interface dipole occurring without the insulating buffer layer.
authors: Humboldt-Universität zu Berlin, Institut für Physik, Newtonstr. 15, 12489, Berlin, Germany.
authors: Haibo
authors: H
authors: Wang
authors: Patrick
authors: P
authors: Amsalem
authors: Georg
authors: G
authors: Heimel
authors: Ingo
authors: I
authors: Salzmann
authors: Norbert
authors: N
authors: Koch
authors: Martin
authors: M
authors: Oehzelt
keywords: alkali halides; band bending; metal-insulator-semiconductor structures; organic electronics; photoelectron spectroscopy