Patent ID: 8546816

Claim:
A light-emitting component comprising an electrode, a counter electrode, an organic region arranged between the electrode and the counter electrode, and an organic light-emitting region, wherein the region comprises at least one emission layer that emits light in one or more colour ranges within the visible spectral region upon application of an electrical voltage to the electrode and the counter electrode: wherein the at least one emission layer comprises at least one fluorescent emitter which emits light predominantly within the blue or blue-green spectral region and at least one phosphorescent emitter emitting light predominantly within the non-blue spectral region, wherein a triplet energy for an energy level of a triplet state in the at least one emission layer for at least one fluorescent emitter is higher than or within 0.1 eV of a triplet energy for an energy level of a triplet state of the at least one phosphorescent emitter, and wherein the light-emitting organic region emits a proportion of at least about 5% of the generated light within the visible spectral region as fluorescent light of singlet states of the at least one fluorescent emitter in the at least one emission layer.