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US 9,805,838 B2Granted
Organic semiconductor formulation
AssigneeMerck Patent GmbH
InventorsToby Cull, Miguel Carrasco-Orozco
Life of this patent
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Abstract
The invention relates to a formulation comprising p-type and n-type organic semiconductors (OSC) and one or more organic solvents, its use for the preparation of organic electronic (OE) devices, especially for bulk heterojunction (BHJ) organic photovoltaic (OPV) devices, to a process for preparing an OE device, especially a BHJ OPV device, using the formulation, and an OE device, especially a BHJ OPV device, prepared using such a process or formulation.
Claims15
A formulation comprising
- at least one p-type organic semiconductor,
- at least one n-type organic semiconductor,
- at least one first solvent, which is tetralin that is substituted by two or more alkyl groups, and
- at least one second solvent which is different from said first solvent and is selected from the group consisting of alkylated benzene, alkoxylated benzene, indane, alkylated indane, alkoxylated indane, tetralin, alkylated tetralin, naphthalene, alkylated naphthalene, anisole, alkylated anisole, linear ketones, cyclic ketones, aromatic ethers, aliphatic ethers, aromatic and aliphatic ethers, aromatic alcohols, optionally substituted thiophenes, benzothiophenes, alkoxylated naphthalene, substituted benzothiazoles, alkyl benzoates and aryl benzoates,
- wherein the solubility of the n-type organic semiconductor in the first solvent is higher than in the second solvent, and the solubility of the p-type organic semiconductor in the second solvent is higher than in the first solvent.
2 more elements
A formulation comprising
- at least one p-type organic semiconductor,
- at least one n-type organic semiconductor,
- at least one first solvent, which is 1,5-dimethyltetralin, and
- at least one second solvent which is different from said first solvent and is selected from the group consisting of alkylated benzene, alkoxylated benzene, indane, alkylated indane, alkoxylated indane, tetralin, alkylated tetralin, naphthalene, alkylated naphthalene, anisole, alkylated anisole, linear ketones, cyclic ketones, aromatic ethers, aliphatic ethers, aromatic and aliphatic ethers, aromatic alcohols, optionally substituted thiophenes, benzothiophenes, alkoxylated naphthalene, substituted benzothiazoles, alkyl benzoates and aryl benzoates,
- wherein the solubility of the n-type organic semiconductor in the first solvent is higher than in the second solvent, and the solubility of the p-type organic semiconductor in the second solvent is higher than in the first solvent.
2 more elements
Dependencies are inferred from the claim text.