Organic electroluminescent device and a method of operating an organic electroluminescent device

摘要

An organic electroluminescent device (100) comprises a substrate (1), a first electrode (2) arranged on the substrate (1), a functional organic layer (3) arranged on the first electrode (2), wherein the functional organic layer (3) emits electromagnetic radiation, a second electrode (4) arranged on the functional organic layer (3), wherein the functional organic layer (3) comprises at least one ionic component and one emitter material having a band gap, wherein the emitter material is selected from the group of ionic transition metal complex, neutral transition metal complex, polymer emitter and combinations thereof, wherein the organic electroluminescent device (100) is adapted to work in two modes, wherein a pre-biasing mode comprises applying a first voltage being a constant or pulsed value less than and/or equal to the band gap to the first (2) and the second electrode (4), wherein an operation mode comprises applying a second voltage being higher than the band gap to the first (2) and the second electrode (4).