title: Anisotropic materials in OLEDs for high outcoupling efficiency.
abstract: We present the results of an optical study in which we evaluate the effect of anisotropic electron transport layers (ETL) and anisotropic hole transport layers (HTL) on the outcoupling efficiency of bottom emitting organic light emitting diodes (OLEDs). We demonstrate that optical anisotropy can have a profound influence on the outcoupling efficiency and introduce a number of design rules which ensure that light extraction is enhanced by anisotropic layers.
authors.forename: Michiel Koen
authors.initials: MK
authors.lastname: Callens
authors.forename: Daisuke
authors.initials: D
authors.lastname: Yokoyama
authors.forename: Kristiaan
authors.initials: K
authors.lastname: Neyts