Merck Patent Gmbh

Seiko Epson Corporation

Dietmar Kunkel

Philipp Stoessel

Thomas Eberle

Aurélie Ludemann

Susanne Heun

Anja Gerhard

Rémi Manouk Anémian

Volker Hilarius

Edgar Boehm

Holger Heil

Anja Jatsch

Irina Martynova

Masahiro Uchida

Philip Edward May

Takuya Sonoyama

Hsin-Rong Tseng

Manuel Hamburger

Christoph Leonhard

Gaëlle Béalle

Henning Seim

Koji Imamura

Fabrice Eckes

Edgar Kluge

Shuichi Takei

Katja Scheible

Katja Stegmaier

Rémi Manouk Anèmian

Imamura Koji

Takei Shuichi

Sonoyama Takuya

Uchida Masahiro

The present invention relates to formulations comprising at least one organic semiconductor and at least one organic solvent, characterized in that the formulation contains less than 10,000 particles per liter formulation having an average size in the range from 0.1 to 20 &#x3bc;m, to their use for the preparation of electronic devices, to methods for preparing electronic devices using the formulations of the present invention, and to electronic devices prepared from such methods and formulations.

Formulations with a low particle content

The present invention relates to formulations containing at least one organic functional material and at least a first organic solvent, wherein said first organic solvent is an alkyl benzoate solvent, as well as to electronic devices prepared by using these formulations.

Formulation of an organic functional material

The present invention relates to formulations which comprise at least one organic semiconductor, at least one metal complex and at least one solvent and the use of these formulations in electronic devices, in particular organic electroluminescent devices.

Formulation containing an organic semiconductor and a metal complex

A formulation comprising at least one solvent and at least two different functional compounds of formula (I)AB]&#x2003;&#x2003;(I) 

Formulations and electronic devices

The present invention relates to a formulation comprising at least one solvent and at least two functional compounds of the general formula (I) where A is a functional structural element, B is a solubility-promoting structural element and k is an integer in the range from 1 to 20, the molecular weight of the functional compound is at least 550 g/mol and the solubility-promoting structural element B conforms to the general formula (L-I) where Ar1, Ar2 is each, independently of one another, an aryl or heteroaryl group, which may be substituted by one or more radicals R of any desired type, X is in each case, independently of one another, N or CR2, preferably CH, R1, R2 is each, independently of one another, hydrogen, a straight-chain alkyl, alkoxy or thioalkoxy group having 1 to 40 C atoms or a branched or cyclic alkyl, alkoxy or thioalkoxy group having 3 to 40 C atoms or is a silyl group or a substituted keto group having 1 to 40 C atoms, an alkoxycarbonyl group having 2 to 40 C atoms, an aryloxycarbonyl group having 7 to 40 C atoms, a cyano group (CN), a carbamoyl group (C(&#x2550;O)NH2), a haloformyl group (C(&#x2550;O)&#x2014;X, in which X represents a halogen atom), a formyl group (C(&#x2550;O)&#x2014;H), an isocyano group, an isocyanate group, a thiocyanate group or a thio-isocyanate group, a hydroxyl group, a nitro group, a CF3 group, Cl, Br, F, a crosslinkable group or a substituted or unsubstituted aromatic or heteroaromatic ring system having 5 to 60 ring atoms, or an aryloxy or heteroaryloxy group having 5 to 60 ring atoms, or a combination of these systems, where one or more of the groups R1 and/or R2 may form a mono- or polycyclic, aliphatic or aromatic ring system with one another and/or with the ring to which the group R1 is bonded; and l is 0, 1, 2, 3 or 4; where the dashed bond indicates the bond to the functional structural element A. The present invention furthermore relates to electronic devices which comprise mixtures of these compounds.

Growing community of inventors

Gernsheim, Germany

Dietmar Kunkel