Patent ID: 11882762
Assignee: FLEXENABLE TECHNOLOGY LIMITED
Field: Basic materials chemistry (Chemistry)
Classification: CPC H  C  Y | IPC C  H

Claim 0:
1. Process of preparing an organic electronic (OE) device, comprising the steps of
a) depositing a formulation comprising one or more organic semiconducting compounds (OSC) and one or more organic solvents,
wherein said formulation has a viscosity at 25° C. in the range of 1 to 9 mPas and wherein the boiling point of the solvent is at most 400° C., onto a substrate to form a film or layer; and
b) removing the solvent(s);
wherein the one or more organic semiconducting compounds comprises a repeating unit of formula P-6:, , wherein n is an integer >1,
R on each occurrence identically or differently denotes H, F, Cl, Br, I, CN, a straight-chain, branched or cyclic alkyl group having from 1 to 40 C atoms, in which one of more C atoms are optionally replaced by O, S, O-C, CO-O, O-CO-O, CRO=CRO or C≡C such that O- and/or S- atoms are not linked directly to each other, and in which one or more H atoms are optionally replaced by F, Cl, Br, I or CN, or denotes an aryl or heteroaryl group having from 4 to 20 ring atoms that is unsubstituted or substituted by one or more non-aromatic groups RS, and wherein one or more groups R may also form a mono or polycyclic aliphatic or aromatic ring system with one another and/or with the ring to which they are attached,
RSon each occurrence identically or differently denotes F, Cl, Br, I, CN,) Sn(ROO)3, Si(ROO)3, or B(ROO)2 a straight-chain, branched or cyclic alkyl group having from 1 to 25 C atoms, in which one of more C atoms are optionally replaced by 0, S, O-C, CO-O, O-OO-O, CRO=CRO or C≡C such that O- and/or S- atoms are not linked directly to each other, and in which one or more H atoms are optionally replaced by F, Cl, Br, I or CN, or RS denotes an aryl or heteroaryl group having from 4 to 20 ring atoms that is unsubstituted or substituted by one or more non-aromatic groups RS, and optionally wherein one or more groups RS form a mono or polycyclic aliphatic or aromatic ring system with one another and/or with R,
RO on each occurrence identically or differently denotes H, F, Cl, CN, alkyl having from 1 to 12 C atoms or aryl or heteroaryl having from 4 to 10 ring atoms, and
ROO on each occurrence identically or differently denotes H or an aliphatic or aromatic hydrocarbon group having from 1 to 20 C atoms, wherein two groups ROO may also form a ring together with the hetero atom to which they are attached, and
wherein the formulation is applied by gravure printing or flexographic printing.