Abstract:
Disclosed are new semiconductor materials prepared from dithienylvinylene copolymers with aromatic or heteroaromatic À-conjugated systems. Such copolymers, with little or no post-deposition heat treatment, can exhibit high charge carrier mobility and/or good current modulation characteristics. In addition, the polymers of the present teachings can possess certain processing advantages such as improved solution-processability and low annealing temperature.
Abstract:
Dithienobenzo-thieno[3,2-b]thiophene-copolymers of the formula (I) wherein: pi is a monocyclic or polycyclic moiety optionally substituted with 1-4 Ra groups, wherein R a , at each occurrence, is independently hydrogen or a) a halogen, b) -CN, c) -NO 2 , d) oxo, e) -OH, f) =C(R b ) 2 ; g) a C 1-20 alkyl group, h) a C 2-20 alkenyl group, i) a C 2-20 alkynyl group, j) a C 1-20 alkoxy group, k) a C 1-20 alkylthio group, I) a C 1-20 haloalkyl group, m) a -Y- C 3-10 cycloalkyl group, n) a -Y- C 6-14 aryl group, o) a -Y-3-12 membered cycloheteroalkyl group, or p) a -Y-5-14 membered heteroaryl group, wherein each of the C 1-20 alkyl group, the C 2-20 alkenyl group, the C 2-20 alkynyl group, the C 3-10 cycloalkyl group, the C 6-14 aryl or haloaryl group, the 3-12 membered cycloheteroalkyl group, and the 5- 14 membered heteroaryl group is optionally substituted with 1 -4 R b groups; Y, at each occurrence, is independently a divalent C 1-6 alkyl group, a divalent C 1-6 haloalkyl group, or a covalent bond; and R 1 , R 2 , R 3 , at each occurrence, are independently H, a halogen, CN, a C 1-30 alkyl group, a C 2-30 alkenyl group, a C 1-30 haloalkyl group, a C 2-30 alkynyl group, a C 1-30 alkoxy group, a C(O)-C 1-20 alkyl group, a C(O)-OC 1-20 alkyl group, a Y-C 3-10 cycloalkyl group, a -Y-3- 12 membered cycloheteroalkyl group, each optionally substituted with 1-5 substituents selected from a halogen, -CN, a C 1-6 alkyl group, a C 1-6 alkoxy group, and a C 1-6 haloalkyl group, -L-Ar 1 , -L-Ar 1 -Ar 1 , -L-Ar 1 -R 4 , or -L-Ar 1 -Ar 1 -R 4 and Y, at each occurrence, is independently a divalent C 1-6 alkyl group, a divalent C 1-6 haloalkyl group, or a covalent bond; n = 0, 1, 2; and o = 1 - 1000.
Abstract:
The present invention relates to a method for producing a layer containing at least one semiconductive metal oxide on a substrate, comprising at least the steps of: (A) producing a solution containing at least one precursor compound of the at least one metal oxide selected from the group of carboxylates from monocarboxylic, dicarbonic, or polycarboxylic acids with at least three carbon atoms or derivatives of monocarboxylic, dicarbonic, or polycarboxylic acids, alcoholates, hydroxides, semicarbazides, carbamates, hydroxamates, isocyanates, amidins, amidrazones, carbamide derivatives, hydroxylamines, oximes, urethanes, ammonia, amines, phosphines, ammonium compounds, azides of the corresponding metal and compounds thereof, in at least one solvent; (B) application of the solvent of step (A) on the substrate; and (C) thermal treatment of the substrate of step (B) at a temperature of 20 to 200 degrees Celsius, in order to transfer the at least one precursor compound in at least one semiconductive metal oxide. In the event that in step (A), electrically neutral [(OH) x (NH 3 ) y Zn] z with x, y, and z independently from one another 0.01 to 10, is used as precursor compound, said precursor compound is obtained by conversion of zinc oxide or zinc hydroxide with ammonia; a substrate, which is coated with at least one semiconductive metal oxide, obtainable by said method; the application of said substrate in electronic components; and a method for producing electronically neutral [(OH) x (NH 3 ) y Zn] z with x, y, and z independently from one another 0.01 to 10, by conversion of zinc oxide and/or zinc hydroxide with ammonia.
Abstract:
The present invention relates to particles modified using a modifier, and a dispersing means comprising said modified particles. The surface-modified metal, metal halogenide, metal chalcogenide, metal nitride, metal phosphide, metal boride, or metal phosphate particles or mixtures thereof have an average particle diameter of 1 to 500 nm and the surface thereof was modified using one or more modifiers of the formula (I), (II), and (III).
Abstract:
Provided are semiconductors prepared from an enantiomerically enriched mixture of a nitrogen-functionalized rylene bis(dicarboximide) compound. Specifically, the enantiomerically enriched mixture has unexpected electron-transport efficiency compared to the racemate or either of the enantiomers in optically pure form.
Abstract:
The present invention provides a process for the preparation of a transistor on a substrate, which transistor comprises a layer, which layer comprises polyimide B, which process comprises the steps of i) forming a layer comprising photocurable polyimide A by applying photocur- able polyimide A on a layer of the transistor or on the substrate ii) irradiating the layer comprising photocurable polyimide A with light of a wavelength of > = 360 nm in order to form the layer comprising polyimide B, and a transistor obtainable by that process.