Patent ID: 8569743

Claim:
A light-emitting device comprising an arrangement of layers on a substrate, wherein the arrangement of layers comprises an anode contact and a cathode contact which are in electrical contact with a light-emitting layer stack, wherein the light-emitting layer stack is arranged between the anode contact and the cathode contact, and the light-emitting layer stack comprises a polymer layer comprising a polymer material, and a first low-molecular layer of vacuum-deposited small molecules of a first organic material that is depositable by means of vacuum evaporation, wherein the first low-molecular layer is arranged adjacent to the cathode contact or the anode contact, and wherein the small molecules of the first low-molecular layer are: donor molecules with a maximum oxidation potential versus Fc/Fc+ (ferrocene/ferrocenium redox couple) of approximately −1.5 V, if the first low-molecular layer is arranged adjacent to the cathode contact, or acceptor molecules with a minimum reduction potential versus Fc/Fc+ (ferrocene/ferrocenium redox couple) of approximately −0.3 V, if the first low-molecular layer is arranged adjacent to the anode contact.