title: Polymer light-emitting electrochemical cells.
abstract: A device configuration for light emission from electroactive polymers is described. In these light-emitting electrochemical cells, a p-n junction diode is created in situ through simultaneous p-type and n-type electrochemical doping on opposite sides of a thin film of conjugated polymer that contains added electrolyte to provide the necessary counterions for doping. Light-emitting devices based on conjugated polymers have been fabricated that operate by the proposed electrochemical oxidation-reduction mechanism. Blue, green, and orange emission have been obtained with turn-on voltages close to the band gap of the emissive material.
authors.forename: Q
authors.initials: Q
authors.lastname: Pei
authors.forename: G
authors.initials: G
authors.lastname: Yu
authors.forename: C
authors.initials: C
authors.lastname: Zhang
authors.forename: Y
authors.initials: Y
authors.lastname: Yang
authors.forename: A J
authors.initials: AJ
authors.lastname: Heeger