Abstract: A polymer consisting of a regio-regular polymer backbone basing on asymmetric fluorine-substituted 2,1,3-benzothiadiazole units (FBT) having a Formula 1MP0: where. R1 is any alkyl group of 1-30 carbons; R2 is any alkyl group of 1-30 carbons; n is any number greater than 6; D is an aryl moiety.

Abstract: A polymer consisting of a regio-regular polymer backbone basing on asymmetric fluorine-substituted 2,1,3-benzothiadiazole units (FBT) having a Formula 1MP0: where. R1 is any alkyl group of 1-30 carbons; R2 is any alkyl group of 1-30 carbons: n is any number greater than 6; D is an aryl moiety.

Abstract: The present invention discloses all-in-one organic electroluminescent inks for balanced charge injection. When of single layer organic lighting emitting diodes are made from these inks, the charge balance can be readily achieved. By using the invented all-in-one organic electroluminescent inks, both the device structure and the fabrication process are simplified, which will increase the production yield and reduce the production cost in manufacturing such devices. This invention also teaches methods to fabricate single layer all-in-one organic light emitting diodes.

Abstract: Organic semiconductor-based devices such as thin film transistors, organic light emitting devices and solar cells have potential in low cost electronic and optoelectronic applications. The performance of these organic semiconductor-based devices is often limited by the large resistance between the organic semiconductors and counter electrodes. This invention provides device structures and methods to reduce the unwanted resistance.

Abstract: The present invention discloses soluble copolymers of aniline and thiophene having a general formula I. Wherein: m and n each independently represents an integer, with m?1 and n?2. R1, R2, R3, R4, R5, R6 and R7 each independently represents, hydrogen atom, or a liner or branched or cyclo aliphatic group having from 1 to 20 carbon atoms, or an aromatic group having from 5 to 30 carbon atoms, or any other functional group, but at least one among R1, R2, R3, R4, R5, R6, and R7 is not a hydrogen atom. The present invention also teaches methods for the synthesis, characterization and application of the disclosed copolymers.

Abstract: This invention discloses structures of organic materials-based semiconductor devices and methods for the fabrication of such devices. According to this invention, each of the devices has a first part and a second part. The first part has at least a first organic semiconductor material layer deposited on a first electrode and the second part has at least a second organic semiconductor material layer deposited on a second electrode. Said device is formed by assembling the two individual parts together. Each part maybe fabricated separately and consists of an electrode coated with semiconductor organic materials required by the function of the desired device. A schematic diagram in the FIG. 3 shows a first part (11) consisting of a first substrate (13), a first electrode (14) and at least one layer of organic materials (15); the second part (12) of the device consisting of the second substrate (16), a second electrode (17) with at least a layer of organic materials (18).

Abstract: This invention provides an innovative multi-line structure and an effective four-terminal method for the resistivity measurement of semiconductor materials. The multi-line structure and the four-terminal method not only allow one to perform resistivity measurement on any inorganic and organic semiconductor thin film conveniently, rapidly and accurately but also offer the means to study resistivity uniformity across the semiconductor thin film.

Abstract: This invention discloses methods for the fabrication of organic semiconductor material-based devices under non-vacuum environment. In one embodiment, electrodes are formed by electrodeposition from an electrolyte containing ions or complexes of the electrode materials to be deposited. In another embodiment, electrodes are formed by solution processing from a solution (or ink) containing nano-particle of the electrode materials or the precursor of electrode materials to be deposited. In addition, two different modes, either layer by layer or layer to layer, are disclosed for the fabrication of organic semiconductor material-based devices, wherein all semiconductor organic materials required by the function of the desired device are deposited under an non-vacuum environment.

Abstract: The present invention discloses methods to remove impurities in polymeric materials in order to improve the opto-electronic characteristics of devices fabricated from these polymers. The polymers include but not limited to polyarylenes, polyarylenevinylenes, polyaryleneethylnylene, polyfluorenes, polyanilines, polythiophenes, polypyrroles, and any conjugated co-polymers. The methods involve the selection of a scavenger or chelating agent and use it to remove metallic impurities from the polymers. The methods involve dissolving the polymer in a suitable solvent, adding a scavenger, mixing to form a scavenger, containing phase, and finally separating the scavenger containing phase from the polymer phase. According to this invention, it is preferable for the selected scavengers to have functional groups which can chemically react with metallic species and form a coordination compound that is not soluble in a selected solvent.

Abstract: The present invention discloses methods to remove impurities in polymeric materials in order to improve the opto-electronic characteristics of devices fabricated from these polymers. The polymers include but not limited to polyarylenes, polyarylenevinylenes, polyaryleneethylnylene, polyfluorenes, polyanilines, polythiophenes, polypyrroles, and any conjugated co-polymers. The methods involve the selection of a scavenger or chelating agent and use it to remove metallic impurities from the polymers. The methods involve dissolving the polymer in a suitable solvent, adding a scavenger, mixing to form a scavenger containing phase, and finally separating the scavenger containing phase from the polymer phase. According to this invention, it is preferable for the selected scavengers to have functional groups which can chemically react with metallic species and form a coordination compound that is not soluble in a selected solvent.