Patent ID: 8653537
Filing Date: 2014-02-18
Classification: H01L

Abstract:
1. A layer assembly for a light-emitting component, comprising a hole-injecting contact and an electron-injecting contact which are each connected to a light-emitting region comprising one light-emitting layer and an other light-emitting layer, wherein: the one light-emitting layer comprises one material and the other light-emitting layer comprises an other material, wherein the one material is ambipolar and has a charge carrier mobility for holes that is greater than the one material's charge carrier mobility for electrons, and the other material is ambipolar and has a charge carrier mobility for electrons that is greater than the other material's charge carrier mobility for holes; wherein the one material and the other material each comprise one or more triplet emitter dopants; wherein the other material comprises either a single-component ambipolar material or an electron-only matrix, wherein hole transport occurs in the electron-only matrix by hopping between states of the one or more triplet emitter dopants; a heterotransition is formed by the one material and the other material in the light-emitting region; an interface between the one material and the other material is of a staggered type II; and an energy barrier for transfer of holes from the one material into the other material and an energy barrier for transfer of electrons from the other material into the one material are each less than about 0.4 eV.