ORGANIC LIGHT-EMITTING DIODE COMPRISING A DOPED ORGANIC LAYER

摘要

The invention relates to an organic light-emitting diode (OLED) comprising, on a substrate (1), generally one lower electrode (2) followed by a flat conductive organic layer (3), a doped organic layer (4), upon which an organic light-emitting layer (5) is placed, and an upper electrode (7), which is placed upon this organic light-emitting layer and which is essentially transparent to the light produced in the light-emitting layer (5). The lower electrode and the flat organic layer serve as a cathode. The doped layer (4) makes it possible to use a hole-conductive material for the flat layer.