Patent ID: 6960877

Claim:
An organic light-emitting device comprising at least one layer of a light-emissive organic material interposed between a first electrode and a second electrode, all formed on a substrate, wherein at least one of the first and second electrodes is formed on a side of the light-emissive organic material remote from the substrate, the at least one electrode comprising one or more electrode layers on the light-emissive material for injecting charge carriers into the light-emissive material, and wherein a stack is formed on the at least one electrode on the side of the light-emissive organic material remote from the substrate the stack comprising a first inert barrier layer and a SiO layer interposed between an outermost layer of the one or more electrode layers and the first inert barrier layer for absorbing moisture and oxygen, and wherein the first inert barrier layer is a layer of material selected from the group consisting of AlN, Al 2 O 3 , SiO 2 , and Si 3 N 4 .