Patent ID: 9735397
Date: 2017-08-15
CPC Classifications: H01L

Claim:
1. A process of producing a radiation-emitting organic electronic device having a first and a second electrode layer and an emitter layer, comprising: A) providing a phosphorescent emitter with an anisotropic molecular structure and a matrix material, B) applying the first electrode layer to a substrate, C) applying the emitter layer under thermodynamic control, with vaporization of the phosphorescent emitter and of the matrix material under reduced pressure and deposition thereof on the first electrode layer such that molecules of the phosphorescent emitter are in anisotropic alignment, wherein the thermodynamic control is effected by bringing the deposited emitter layer to an elevated temperature relative to room temperature of 30° C. to 100° C. by a thermal treatment during the deposition and maintaining such a temperature after the deposition step such that the emitter layer is converted to a state in which the emitter molecules can be aligned and, subsequently, cooling the emitter layer such that alignment of the emitter molecules is frozen, and D) applying the second electrode layer on the emitter layer.