Patent ID: 9123906
Filing Date: 2015-09-01
Classification: H01L

Abstract:
1. A method for preparing an organic electroluminescent device, comprising the steps of: S1, preparing a metal oxide sol or a thiophene compound sol, wherein preparing the thiophene compound sol comprises the steps of: dissolving a thiophene compound in an organic solvent to prepare the a thiophene compound sol having a concentration of 1×10 S2, providing an anode base layer, and conducting a pretreatment on a surface of the anode base layer; S3, applying the metal oxide sol or the thiophene compound sol on the pretreated surface of the anode base layer using a spin coating technique to form a hole injection layer; applying a light emitting layer on the hole injection layer; applying a cathode electrode layer on the light emitting layer; and drying to give the organic electroluminescent device.