Organic radiation-emitting component
View Patent ↗An organic radiation-emitting component such as an organic light emitting diode (OLED), having at least two electrode layers and, between them, at least one organic self-emitting layer with a phosphorescence triplet emitter comprising as well as one phosphorescent metal complex. The radiation-emitting layer contains, embedded in a matrix, a metal complex, preferably a transition metal complex, with at least one substituted or unsubstituted guanidinate ligand.
1. A radiation-emitting organic component comprising a substrate, at least one lower electrode layer, at least one organic radiation-emitting layer and an upper electrode layer arranged thereon, wherein the radiation-emitting layer has a matrix, the matrix containing at least one radiation-emitting metal complex, wherein the metal complex comprises at least one metal central atom M selected from a group consisting of Ir, Pt, Au, Re, Ru, Os, Pd and lanthanoids, wherein the metal complex has at least one substituted or unsubstituted guanidinate ligand, with a guanidine anion group, wherein the guanidine anion group is doubly coordinated to the central atom present in the metal complex or bridging the at least one metal central atom M and another metal atom in an at least dinuclear metal complex, wherein the guanidine anion group comprises the following structural unit:
R 1 , R 2 , R 3 and R 4 can independently be H, unbranched, branched, condensed and cyclic alkyl residues, alkylene residues, substituted or unsubstituted aromatic compounds, condensed aromatic compounds, substituted or unsubstituted heterocycles and condensed heterocycles as well as completely or partially substituted alkyl residues, aromatic compounds, condensed aromatic compounds, heterocycles and condensed heterocycles, and/or wherein
R 1 and R 4 and/or groups R 2 and R 3 and/or R 3 and R 4 are bonded to each other and/or wherein the alkyl residues and alkylene residues comprise at least one substituent selected from the group consisting of ether groups, ester, amide, and carbonate groups.
2. The component according to claim 1 , wherein the component has one or more auxiliary layers in addition to the radiation-emitting layer between the electrode layers in each case.
3. The component according to claim 1 , wherein the substrate and the lower electrode layer are transparent.
4. The component according to one of claims 1 , wherein the metal complex contained in the radiation-emitting layer has at least one hpp ligand as guanidinate ligand.
5. The component according to claim 1 , wherein the guanidinate ligand is bicyclic and the bicyclic system contains the N atoms of the guanidine anion group.
6. The component according to claim 1 , wherein the metal complex contained in the emission layer is homoleptic.
7. The component according to claim 1 that emits deep blue, light blue and/or blue-green.