title: Self-heating, bistability, and thermal switching in organic semiconductors.
abstract: We demonstrate electric bistability induced by the positive feedback of self-heating onto the thermally activated conductivity in a two-terminal device based on the organic semiconductor C(60). The central undoped layer with a thickness of 300 nm is embedded between thinner n-doped layers adjacent to the contacts, minimizing injection barriers. The observed current-voltage characteristics follow the general theory for thermistors described by an Arrhenius-like conductivity law. Our findings include hysteresis phenomena and are of general relevance for the entire material class since most organic semiconductors can be described by a thermally activated conductivity.
authors.affiliation: Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr-Straße 1, 01069 Dresden, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Fischer
authors.affiliation: Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr-Straße 1, 01069 Dresden, Germany.
authors.forename: P
authors.initials: P
authors.lastname: Pahner
authors.affiliation: Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr-Straße 1, 01069 Dresden, Germany.
authors.forename: B
authors.initials: B
authors.lastname: Lüssem
authors.affiliation: Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr-Straße 1, 01069 Dresden, Germany.
authors.forename: K
authors.initials: K
authors.lastname: Leo
authors.affiliation: Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr-Straße 1, 01069 Dresden, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Scholz
authors.affiliation: Weierstraß-Institut, Mohrenstraße 39, 10117 Berlin, Germany.
authors.forename: T
authors.initials: T
authors.lastname: Koprucki
authors.affiliation: Weierstraß-Institut, Mohrenstraße 39, 10117 Berlin, Germany.
authors.forename: K
authors.initials: K
authors.lastname: Gärtner
authors.affiliation: Weierstraß-Institut, Mohrenstraße 39, 10117 Berlin, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Glitzky