title: Increased and balanced light emission of transparent organic light-emitting diodes by enhanced microcavity effects.
abstract: We report on improved and controlled light outcoupling of transparent organic light-emitting diodes (TOLEDs) by inserting thin silver layers between the indium tin oxide anode and the hole transporting layer. The introduction of Ag layers influences both the bottom and top emission of the TOLEDs, and it results in dramatic changes in the electroluminescence spectra and angular distribution. We find that the overall external quantum efficiency can be increased up to 18.8%, and the ratio of bottom and top emission can be almost identical.
authors.affiliation: Institut für Angewandte Photophysik, Technische Universität Dresden, D-01062 Dresden, Germany. jonghee.lee@iapp.de
authors.forename: Jonghee
authors.initials: J
authors.lastname: Lee
authors.forename: Simone
authors.initials: S
authors.lastname: Hofmann
authors.forename: Michael
authors.initials: M
authors.lastname: Thomschke
authors.forename: Mauro
authors.initials: M
authors.lastname: Furno
authors.forename: Yong Hyun
authors.initials: YH
authors.lastname: Kim
authors.forename: Björn
authors.initials: B
authors.lastname: Lüssem
authors.forename: Karl
authors.initials: K
authors.lastname: Leo