Patent ID: 6917158
Filing Date: 2005-07-12
Classification: H01L

Abstract:
1. An electroluminescent device comprising an organic or polymer-light emitting diode comprising: a) a substrate formed of an electrically insulating material chosen from an optically transparent material and an opaque material; b) a conductive anode comprised of aluminum-doped zinc oxide films formed over the substrate by a magnetron sputtering process, wherein the surface of the aluminum-doped zinc oxide films is chemically modified at the end of the deposition process by reducing the oxygen partial pressure and the substrate temperature to provide an atomic ratio of Zn:O greater than 1 and a ZnO:Al surface work function greater than 4.3 eV, and wherein the conductive anode exhibits a carrier density greater than 8×10 c) an organic or polymer light-emitting structure formed over the conductive anode; and d) a cathode formed over the light-emitting structure.