Organic electronic component with dopant, use of a dopant and method for the production of the dopant
View Patent ↗An organic electronic component includes an organic functional layer having a p-dopant. The p-dopant includes a copper complex having at least one ligand containing an aryloxy group and an iminium group. Additionally specified are the use of a copper complex as a p-dopant and a process for producing a p-dopant.
1. An organic electronic component comprising:
a substrate;
a first electrode overlying the substrate;
an organic functional layer overlying the first electrode, the organic functional layer comprising a matrix material into which a p-dopant has been introduced, wherein the p-dopant comprises a copper complex having at least one ligand containing an aryloxy group and an iminium group; and
a second electrode overlying the organic functional layer,
wherein the copper complex has one of the general formulae I and II:
where R 1 , R 1′ , R 2x , R 2x′ , where x=a, b, c or d are each independently selected from a group consisting of hydrogen, fluorine, unbranched, branched, fused, cyclic, unsubstituted and substituted alkyl radicals, substituted and unsubstituted aromatics, and substituted and unsubstituted heteroaromatics,
wherein R 1 and R 1′ are the same and R 2x and R 2x′ with x=a, b, c or d are each the same.
2. The component according to claim 1 , wherein R 1 and R 1′ are joined to one another.
3. The component according to claim 1 , wherein at least one of R 1 , R 1′ , R 2x and R 2x′ has an electron-withdrawing substituent.
4. The component according to claim 1 , wherein the organic functional layer is hole-conducting.
5. The component according to claim 1 , wherein the matrix material is a hole transport material comprising organic small molecules, polymers or mixtures thereof.
6. The component according to claim 1 , wherein each molecule of copper complex is coordinated by at least one molecule of the matrix material.
7. The component according to claim 1 , wherein the p-dopant is present in the matrix material in a concentration of 0.1 to 50% by volume relative to a volume of the matrix material.
8. The component according to claim 1 , wherein the component comprises a component selected from the group consisting of field-effect transistors, solar cells, photodetectors, optoelectronic components, light-emitting diodes and displays.
9. The component according to claim 1 , wherein the organic functional layer takes the form of a hole transport layer of a charge-generating layer sequence.
10. A method comprising:
using a copper complex having at least one ligand containing an aryloxy group and an iminium group as a p-dopant in a hole transport material,
wherein the copper complex has one of the general formulae I and II:
where R 1 , R 1′ , R 2x , R 2x′ , where x=a, b, c or d are each independently selected from a group consisting of hydrogen, fluorine, unbranched, branched, fused, cyclic, unsubstituted and substituted alkyl radicals, substituted and unsubstituted aromatics, substituted and unsubstituted heteroaromatics,
wherein R 1 and R 1′ are the same and R 2x and R 2x′ with x=a, b, c or d are each the same.