title: High resolution optical spectroscopy of air-induced electrical instabilities in n-type polymer semiconductors.
abstract: We use high-resolution charge-accumulation optical spectroscopy to measure charge accumulation in the channel of an n-type organic field-effect transistor. We monitor the degradation of device performance in air, correlate the onset voltage shift with the reduction of charge accumulated in the polymer semiconductor, and explain the results in view of the redox reaction between the polymer, water and oxygen in the accumulation layer.
authors.affiliation: Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, UK.
authors.forename: Riccardo
authors.initials: R
authors.lastname: Di Pietro
authors.forename: Henning
authors.initials: H
authors.lastname: Sirringhaus
mesh_terms: D000388:Air; D004560:Electricity; D004566:Electrodes; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D012666:Semiconductors; D014867:Water / Q000737:chemistry
chemical_list: D011108:Polymers; D014867:Water; D010100:Oxygen