Patent ID: 6555840
Filing Date: 2003-04-29
Classification: H01L,Y02E,Y02P

Abstract:
An organic opto-electronic structure comprising an organic charge-transport layer arrangement having: (a) an electron-transport region at one surface, (b) a hole-transport region at an opposite surface, and (c) at least one active region, wherein the or each active region is defined by a diffused region of the organic charge-transport layer arrangement into which at least one dopant has diffused, said diffused region extending only partly through the thickness of said layer arrangement,wherein the organic charge-transport layer arrangement comprises a substantially uniform first organic charge-transport layer, a substantially uniform second organic charge-transport layer disposed on the first organic layer, an interface between said first and second organic layers, one of the organic layers defining the hole-transport region and the other organic layer defining the electron-transport region, and a plurality of active regions at the interface, wherein the or each active region is provided at the interface.