Organic Electroluminescent Device Comprising a First Metal Compound and a Second Metal Compound, and a Display Device Comprising the Organic Electroluminescent Device

An organic electroluminescent device comprising an anode layer, a cathode layer, a first emission layer, a second emission layer, a hole injection layer, and at least one first charge generation layer,

• wherein the hole injection layer is in direct contact to the anode layer,
• wherein the first charge generation layer is arranged between the first emission layer and the second emission layer;
• wherein the first charge generation layer comprises a first n-type charge generation layer and a first p-type charge generation layer;
• wherein the first n-type charge generation layer comprises an organic electron transport matrix compound and a metal-dopant, and the first n-type charge generation layer is arranged closer to the anode layer than the first p-type charge generation layer;
• wherein the hole injection layer comprises a first metal compound,
• wherein the first metal compound is selected from the group comprising a metal salt, or a metal complex, wherein the metal complex comprises a metal cation and at least one monoanion comprising at least 5 covalently bound atoms or at least one monoanionic ligand L comprising at least 5 covalently bound atoms, wherein the first metal compound has a LUMO energy level of ≤−4.65 eV;
• wherein the first p-type charge generation layer comprises a second metal compound,
• wherein the second metal compound is selected from the group comprising a metal salt, or a metal complex, wherein the metal complex comprises a metal cation and at least one monoanion comprising at least 5 covalently bound atoms or at least one monoanionic ligand L comprising at least 5 covalently bound atoms, the second metal compound has a LUMO energy level of ≤−4.65 eV;
• wherein the first metal compound of the hole injection layer is selected different from the second metal compound of the first p-type charge generation layer.