Patent ID: 7722947

Claim:
An organic light-emitting diode (OLED) comprising, on a substrate ( 1 ), a conducting organic layer ( 3 ) adapted to rectify planarity defects of this substrate and therefore called a planarizing layer, surmounted by a n-doped organic layer ( 4 ), which is itself surmounted by an organic electroluminescent layer ( 5 ), which is itself surmounted by at least one electrode called the upper electrode ( 7 ) which is substantially transparent to the light produced in the electroluminescent layer ( 5 ), wherein said conducting organic planarizing layer ( 3 ) is made of an organic material having an electron work function greater than 3.5 eV but serves for injecting electrons into said electroluminescent layer ( 5 ) and wherein said upper electrode ( 7 ) serves for bring holes into said electroluminescent layer ( 5 ).