| abstract |
FIELD OF THE INVENTION The present invention relates to an organic radiation emitting device, such as an organic light emitting diode (OLED), which device comprises at least two electrode layers, at least one self-emitting organic layer and a phosphorescent layer, located between and including a phosphorescent triplet emitter. Metal complexes. The radiation emitting layer comprises a metal complex embedded in a matrix and preferably comprises a transition metal complex containing at least one guanidinate ligand, optionally substituted. |