title: Enhanced electron injection into inverted polymer light-emitting diodes by combined solution-processed zinc oxide/polyethylenimine interlayers.
abstract: Inverted device architectures for organic light-emitting diodes (OLEDs) require suitable interfaces or buffer layers to enhance electron injection from highwork-function transparent electrodes. A solution-processable combination of ZnO and PEI is reported, that facilitates electron injection and enables efficient and air-stable inverted devices. Replacing the metal anode by highly conductive polymers enables transparent OLEDs.
authors.affiliation: Light Technology Institute, Karlsruhe Institute of Technology (KIT), Engesserstrasse 13, 76131, Karlsruhe, Germany.
authors.forename: Stefan
authors.initials: S
authors.lastname: Höfle
authors.forename: Alexander
authors.initials: A
authors.lastname: Schienle
authors.forename: Michael
authors.initials: M
authors.lastname: Bruns
authors.forename: Uli
authors.initials: U
authors.lastname: Lemmer
authors.forename: Alexander
authors.initials: A
authors.lastname: Colsmann
keywords: inverted device architecture; organic light emitting diode; solution processing; transparent; zinc oxide