Abstract:
An organic electroluminescent device includes a substrate, a first electrode arranged on the substrate, and a functional organic layer arranged on the first electrode. The functional organic layer is adapted to emit electromagnetic radiation A second electrode is arranged on the functional organic layer. The functional organic layer includes a matrix material and an emitter material. The emitter material is neutral or ionically charged. The emitter material is selected from the group of ionic transition metal complex, neutral transition metal complex, polymer emitter and combinations thereof, wherein the matrix material comprises at least one ionic charge carrier transporting material, wherein the ionic charge carrier transporting material is selected from the group of electron-transporting material, hole-transporting material, ambipolar-transporting material and combinations thereof, and wherein the at least one ionic charge carrier transporting material is ionically charged.
Abstract:
An organic electroluminescent device includes a substrate, a first electrode arranged on the substrate, and a functional organic layer arranged on the first electrode. The functional organic layer emits electromagnetic radiation. A second electrode is arranged on the functional organic layer. The functional organic layer includes at least one ionic component and one emitter material having a band gap. The emitter material is selected from the group of ionic transition metal complex, neutral transition metal complex, polymer emitter and combinations thereof. The organic electro-luminescent device 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 and the second electrode.