Patent ID: 9368761
Filing Date: 2016-06-14
CPC Classification: H01L,Y02E

Claim Text:
1. A composition comprising one or more organic semiconducting compounds (OSC), one or more organic solvents, and one or more additives that decrease the surface tension of the composition (wetting agents), wherein said wetting agent is volatile and is not capable of chemically reacting with the organic semiconducting compounds wherein said organic solvent is a naphthalene derivative, an alkyl naphthalene, a dihydronaphthalene derivative, a tetrahydronaphthalene derivative, an aromatic ester, an aromatic ketone, an alkyl ketone, a heteroaromatic solvent, an aniline derivative or mixtures of these compounds and the organic semiconducting compound is an organic phosphorescent compound which emits light and in addition contains at least one atom having an atomic number greater than 38 and wherein said wetting agent is methyl siloxane having 6 to 20 carbon atoms, C 7 -C 14 alkane, C 7 C 14 akene, C 7 -C 14 alkyne, alcohol having 7 to 14 carbon atoms, fluoro ether having 7 to 14 carbon atoms, fluoro ester having 7 to 14 carbon atoms or fluoro ketone having 7 to 14 carbon atoms, wherein the difference of the boiling point of the wetting agent and the organic solvent is in the range of −20° to 20° C.