Patent ID: 9515288
Filing Date: 2016-12-06
CPC Classification: H01B,H01L,H05B

Claim Text:
1. An organic light emitting device comprising: a substrate; a first electrode arranged over the substrate; a functional layer stack configured to emit light and arranged over the first electrode, the functional layer stack comprising a plurality of organic layers; and a second electrode disposed over said functional layer stack, wherein the organic light emitting device further comprises at least one electrically conductive graphene layer that is arranged between at least two organic layers of said plurality of organic layers, is in contact with at least one organic layer of the at least two organic layers, and acts as a diffusion barrier against diffusion of atoms, ions or molecules into or from the at least one organic layer with which said graphene layer is in contact, wherein the at least one graphene layer is essentially transparent at least to light emitted by the organic light emitting device.