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US 10,734,587 B2Granted
Formulations of luminescent compounds
AssigneeMerck Patent GmbH
InventorsAmir Hossain Parham, Philipp Stoessel, Christof Pflumm, Anja Jatsch, Joachim Kaiser, Anna Hayer
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Abstract
The present invention relates to a formulation comprising organic materials for the production of organic electronic devices having a low failure rate.
Claims13
A formulation comprising at least one type of organic luminescent compound (TADF compound) and an organic solvent or a mixture of multiple organic solvents, wherein the TADF compound has a separation between the lowest triplet state T1 and the first excited singlet state Si of less than or equal to 0.15 eV;
- wherein the formulation comprises a first organic matrix material and a second organic matrix material,
- wherein the first organic matrix material is an electron-transporting material or a hole-transporting matrix material, and the second organic matrix material is a compound which has a band gap between HOMO and LUMO of greater than or equal to 3.5 eV.
Dependencies are inferred from the claim text.