ORGANIC LIGHT-EMITTING DIODE WITH A MULTILAYER TRANSPARENT ELECTRODE

摘要

Organic light-emitting diode comprising a substrate (1), an organic electroluminescent layer (3) placed between a first electrode (2) and a transparent and semi-reflecting second electrode having a multilayer structure subdivided into a silver-based metallic first layer (4) in contact with the organic electroluminescent layer (3); an aluminium-based metallic second layer (5); and a dielectric third layer (6), characterized in that the metallic second layer (5) is interposed between the metallic first layer (4) and the dielectric third layer (6) of the transparent second electrode, in that the organic electroluminescent layer (3) includes a doped sublayer in contact with the metallic first layer (4) of the transparent second electrode and in that the thickness of said dielectric third layer (6) is adapted so as to limit the absorption by said first (4) and second (5) metallic layers of the light emitted by the diode.