Patent ID: 8288180
Filing Date: 2012-10-16
Classification: H01L

Abstract:
1. A method for manufacturing a light emitting device, comprising: forming an anode over a substrate; forming a mixed layer including an organic compound having an arylamine group and molybdenum oxide over the anode by co-evaporation, the mixed layer having a thickness of 60 nm or more; after forming the mixed layer, spraying the mixed layer with a nitrogen gas for 10 to 180 minutes in a first chamber to expose the mixed layer to a nitrogen gas atmosphere without exposing the mixed layer to a gas atmosphere including oxygen; after spraying the mixed layer with the nitrogen gas, transferring the substrate to a second chamber without exposing the mixed layer to a gas atmosphere including oxygen; forming a hole transporting layer over the mixed layer in vacuum in the second chamber without exposing the mixed layer to a gas atmosphere including oxygen; forming a light emitting layer over the hole transporting layer; and forming a cathode over the light emitting layer, wherein after the mixed layer is exposed to the nitrogen gas atmosphere, the nitrogen gas is evacuated, and the mixed layer is exposed to a nitrogen gas atmosphere again.