Organic light-emitting component and use of a copper complex in a charge transport layer
View Patent ↗An organic light-emitting component has an active layer for emitting electromagnetic radiation. It also has an anode and an organic charge transport layer, arranged between the active layer and the anode, for transporting charge carriers from the anode to the active layer. The anode can be used to decouple electromagnetic radiation emitted by the active layer from the organic light-emitting component. The organic charge transport layer comprises a copper complex which has at least one ligand with the chemical structure as per a formula I.
1. An organic, light-emitting component comprising:
an active layer configured to emit electromagnetic radiation;
an anode and a cathode;
an organic charge transport layer disposed between the active layer and the anode, the organic charge transport layer configured for charge carrier transport from the anode into the active layer;
an electron transport layer disposed between the active layer and the cathode, wherein the electron transport layer comprises an n-doped material,
wherein the electromagnetic radiation emitted from the active layer is outcoupled from the organic, light-emitting component via the anode, and
wherein the organic charge transport layer comprises a copper complex which has at least one ligand with the chemical structure according to formula I:
where E 1 and E 2 are each, independently of one another, one of the following elements: oxygen, sulfur, or selenium, and where R is selected from the group consisting of: hydrogen or substituted or unsubstituted, branched, linear, or cyclic hydrocarbons.
2. The organic, light-emitting component according to claim 1 , wherein the copper complex is a copper(I)pentafluorobenzoate.
3. The organic, light-emitting component according to claim 1 , wherein the copper complex is incorporated as dopant in a matrix material.
4. The organic, light-emitting component according to claim 1 , wherein the matrix material comprises 1-TNATA {4,4′,4″-tris(N-(1-naphthyl)-N-phenylamino)triphenylamine.
5. The organic, light-emitting component according to claim 3 , wherein the organic charge transport layer has a dopant concentration of 0.1 to 50 weight percent.
6. The organic, light-emitting component according to claim 3 , wherein the organic charge transport layer has a dopant concentration of more than 1 weight percent.
7. The organic, light-emitting component according to claim 3 , wherein the organic charge transport layer has a dopant concentration of more than 10 weight percent.
8. The organic, light-emitting component according to claim 3 , wherein the organic charge transport layer has a dopant concentration of more than approximately 5 weight percent.
9. The organic, light-emitting component according to claim 3 , wherein the charge transport layer has a doping gradient from the anode to the active layer.
10. The organic, light-emitting component according to claim 9 , wherein the doping of the charge transport layer decreases toward the active layer.
11. The organic, light-emitting component according to claim 1 , wherein the cathode is transparent in the spectral range of the electromagnetic radiation emitted in the active layer.
12. A method for manufacturing an organic, light-emitting component, the method comprising:
forming a charge transporting layer on an anode, wherein the anode is transparent;
forming an active layer on the charge transporting layer; and
forming an electron transporting layer on the active layer,
wherein the active layer is configured to emit electromagnetic radiation,
wherein the electron transport layer comprises an n-doped material,
wherein a copper complex in applied to the charge transport layer of the optoelectronic component,
wherein the copper complex has at least one ligand with the chemical structure according to formula I:
where E 1 and E 2 are each, independently of one another, one of the following elements: oxygen, sulfur, or selenium, and where R is selected from the group consisting of: hydrogen or substituted or unsubstituted, branched, linear, or cyclic hydrocarbons.
13. An organic, light-emitting component comprising:
an active layer configured to emit electromagnetic radiation;
an anode; and
an organic charge transport layer disposed between the active layer and the anode, the organic charge transport layer configured for charge carrier transport from the anode into the active layer,
wherein the electromagnetic radiation emitted from the active layer is outcoupled from the organic, light-emitting component via the anode, and
wherein the organic charge transport layer comprises a copper complex which has at least one ligand with the chemical structure according to formula I:
where E 1 and E 2 are each, independently of one another, one of the following elements: oxygen, sulfur, or selenium, and where R is selected from the group consisting of: hydrogen or substituted or unsubstituted, branched, linear, or cyclic hydrocarbons,
wherein the charge transport layer has a doping gradient from the anode to the active layer.