Patent ID: 8878159
Filing Date: 2014-11-04
Classification: H01L,Y02E

Abstract:
1. A light-emitting device comprising: an anode; a first layer over the anode, the first layer comprising a light-emitting material; a second layer over and in direct contact with the first layer; a third layer over and in direct contact with the second layer, the third layer comprising a transparent conductive film; a fourth layer over the third layer, the fourth layer comprising an organic compound doped with an electron-receiving material to the organic compound; and a cathode over and in direct contact with the fourth layer, the cathode comprising a metal, wherein each of the second layer and the third layer has a single layer structure, wherein the second layer comprises a material selected from zinc oxide, tin oxide, titanium oxide, zinc sulfide, zinc selenide, and zinc telluride, and wherein the transparent conductive film comprises a material selected from the group consisting of tin oxide, indium oxide, zinc oxide, zinc oxide containing gallium, and molybdenum oxide.