TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The organic solvent comprises at least 60 wt.% of dimethylanisole. The dimethyl anisole is 3,4-dimethylanisole. The organic semiconducting compounds comprises Hansen Solubility parameters of dispersion contribution (Hd) of 17-20 MPa(0.5), polar contribution (Hp) of 2-10 MPa(0.5) and hydrogen bonding contribution (Hh) of 0-15 MPa(0.5). The organic semiconducting compounds comprises a solubility radius determined according to Hansen Solubility parameters of at least 3 MPa(0.5). The organic semiconducting compounds is substituted aromatic compounds of formula (A-(B1)k) (I), (A-(B2)k) (II) or (A-(B3)k) (III), preferably substituted polyacene compounds of formula (IV). The organic semiconducting compound has: a glass transition temperature of at least 70 degrees C; and a molecular weight of at least 800 g/mol. The composition comprises: a viscosity of 1-100 mPas at 25 degrees C; at least one inert binder, which is a polymer having a glass transition temperature of -70 to 160 degrees C; and 0.1-5 wt.% of polymeric binders. The index of (I) is greater than or equal to 2. The weight ratio of the functional structure element (A) to the solubilizing structure element (B1) is 2:1 to 1:20, preferably 1:1 to 1:3. In the composition, more organic light emitting materials and/or charge transporting materials having a molecular weight of at most 5000 g/mol is an organic phosphorescent compound which emits light and in addition contains at least one atom having an atomic number greater than 38. The phosphorescent compounds are substituted iridium containing complexes of formula (V) or (VI), or substituted platinum containing complexes of formula (VII) or (VIII). The organic semiconducting compounds are organic light emitting materials and/or charge transporting materials i.e. preferably the phosphorescent compounds. The organic semiconducting compounds having a molecular weight of at most 5000 are present at 0.25- 5 wt.%. The composition comprises at least one wetting agent. The wetting agent is volatile and is not capable of chemically reacting with the light emitting materials and/or charge transporting materials having a molecular weight of at most 5000 g/mol.A = functional structure element;B1 = solubilizing structure element, preferably substituted phenyl moiety of formula (Ia);k = 1-20;B2 = solubilizing structure element, preferably substituted phenyl moiety of formula (IIa);B3 = solubilizing structure element, preferably substituted phenyl moiety of formula (IIIa);Ar1 = 4-120C (hetero)aryl (optionally substituted by at least one R);l, s = 0-4, preferably s is 0 or 2; eitherR1a-R1d = 2-40C alkoxycarbonyl, 7-40C aryloxycarbonyl, amino, silyl, alkynylsilyl or 5-60C (hetero)aromatic (all optionally substituted), H, 1-40C straight chain alkyl, 1-40C alkoxy, 1-40C thioalkoxy, 3-40C alkyl (branched or cyclic), 3-40C alkoxy, 3-40C thioalkoxy (preferably 7-40C alkylaryloxy (optionally substituted)), CN, -C(=O)NH2, -C(=O)-X, -C(=O)-H, isocyano, isocyanate, thiocyanate, thioisocyanate, OH, NO2, CF3, Cl, Br, F, curable group and/or 5-60C (hetero)aryloxy; orat least one R1a, at least one R1b, at least one R1c, at least one R1d = mono or polycyclic aliphatic or aromatic ring;X = halo;Ar2, Ar3 = 4-60C (hetero)aryl (optionally substituted by at least one R);m = 0-3;n, o = 0-5; eitherR1-R12 = 1-40C (hydro)carbyl, 1-40C alkoxy, 6-40C aryloxy, 7-40C alkylaryloxy, 2-40C alkoxycarbonyl, 7-40C aryloxycarbonyl, amino, silyl or alkynylsilyl (all optionally substituted), H, CN, -C(=O)NH2, -C(=O)-X, -C(=O)-H), isocyano, isocyanate, thiocyanate, thioisocyanate, OH, NO2,CF3, Cl, Br or F; orR1R2, R2R3, R3R4, R7R8, R8R9, R9R10 = 4-40C ring (optionally saturated, optionally containing O, S or -N(R2a)- and optionally substituted), where at least one of C of the polyacene skeleton is optionally substituted by N, P, As, O, S, Se or Te; orany two or more of R1-R12 = 4-40C ring (optionally saturated and optionally containing O, S or -N(R2a)) or aromatic ring;R2a = H or hydrocarbon (optionally substituted);DCy = cyclic group (containing at least one N or C in the form of a carbene or phosphorus, via which the cyclic group is bonded to the metal, and optionally substituted by at least one R18), where DCy and CCy are connected to one another via covalent bond;CCy = cyclic group (containing C via which the cyclic group is bonded to the metal and optionally substituted by at least one R18);A2 = monoanionic, bidentate chelating ligand, preferably diketonate ligand; eitherR18 = 1-20C alkyl or 1-20C alkoxy (both optionally branched or cyclic, where at least one nonadjacent CH2 optionally replaced by -O-, -S-, -NR19-, -CONR19-, -CO-O-, -C=O-, -CH=CH- or -C=C-, and at least one H are optionally replaced by F), F, Cl, Br, I, NO2, CN, or 4-14C (hetero)aryl (optionally substituted at least one nonaromatic R18); ormany R18, either on same ring or on two different rings = mono- or polycyclic, aliphatic or aromatic ring; andR19 = 1-20C alkyl or 1-20C alkoxy (both optionally branched or cyclic, where at least one non-adjacent CH2 are optionally replaced by -O-, -S-, -CO-O-, -C=O-, -CH=CH- or -C=C-, and at least one H are optionally replaced by F), or 4-14C (hetero)aryl (optionally substituted by at least one nonaromatic R18).Preferred Process: The composition is applied onto the substrate by dip coating, spin coating, ink jet printing, nozzle printing, letter-press printing, screen printing, gravure printing, doctor blade coating, roller printing, reverse roller printing, offset lithography printing, flexographic printing, web printing, spray coating, dip coating, curtain coating, brush coating, slot dye coating or pad printing. EXAMPLE - No suitable example given.