| Patent application number | Description | Published |
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| 20080248313 | Sulfonation of conducting polymers and OLED, photovoltaic, and ESD devices - Conducting polymer systems for hole injection or transport layer applications including a composition comprising: a water soluble or water dispersible regioregular polythiophene comprising (i) at least one organic substituent, and (ii) at least one sulfonate substituent comprising sulfonate sulfur bonding directly to the polythiophene backbone. The polythiophene can be water soluble, water dispersible, or water swellable. They can be self-doped. The organic substituent can be an alkoxy substituent, or an alkyl substituent. OLED, PLED, SMOLED, PV, and ESD applications can be used. | 10-09-2008 |
| 20080299293 | SOLVENT SYSTEM FOR CONJUGATED POLYMERS - A solvent system for a conjugated polymer that includes at least two different solvents, at least one first solvent and at least one second solvent wherein the second solvent comprises a heterocyclic ring to improve the characteristics of materials made therefrom. Use of the solvent system to improve the electronic and/or optoelectronic characteristics of materials that include conjugated polymers, such as polythiophenes, optionally including n-acceptors, which are cast from a composition that includes the solvent system. In some embodiments the improved characteristics include higher absorption of solar radiation, increased current densities and higher power conversion efficiencies. As a result, materials made with the present solvent systems are well-suited for use in a variety of electronic devices including, photovoltaic cells, light emitting diodes, and transistors. | 12-04-2008 |
| 20090066233 | Mixed halogen polymerization - Synthesis of regioregular thiophene-based polymers (PTs) and their functionalized counterparts via metal assisted cross-coupling polymerizations utilizing mixed halogen substituted aryl halide monomer precursors. The described method provides a means to control structural homogeneity and regioregularity and the electronic/spectroscopic properties of functionalized PTs, and leads to improved performance of organic semiconductor devices such as OPVs and/or OFETs. Asymmetrical monomers can be used. | 03-12-2009 |
| 20120037852 | SULFONATION OF CONDUCTING POLYMERS AND OLED, PHOTOVOLTAIC, AND ESD DEVICES - Conducting polymer systems for hole injection or transport layer applications including a composition comprising: a water soluble or water dispersible regioregular polythiophene comprising (i) at least one organic substituent, and (ii) at least one sulfonate substituent comprising sulfonate sulfur bonding directly to the polythiophene backbone. The polythiophene can be water soluble, water dispersible, or water swellable. They can be self-doped. The organic substituent can be an alkoxy substituent, or an alkyl substituent. OLED, PLED, SMOLED, PV, and ESD applications can be used. | 02-16-2012 |
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| 20090023842 | PORPHYRIN AND CONDUCTIVE POLYMER COMPOSITIONS FOR USE IN SOLID-STATE ELECTRONIC DEVICES - Compositions comprising porphyrinic macrocycles and conjugated polymers such as polythiophene for use in organic electronic devices including solar cells are presented. Covalent linkage of a porphyrinic macrocycle to a polymer allows tuning of electronic and spectroscopic properties of conjugated polymers and can improve the heat stability of the system relative to a blended comparison. A composition comprising: at least one polymer comprising at least one porphyrinic macrocycle covalently linked to at least one conjugated polymer, wherein the porphyrinic macrocycle is metal-free is also presented. Inks can be formulated. Methods of making are provided. | 01-22-2009 |
| 20090176994 | ORGANIC PHOTOVOLTAIC DEVICES COMPRISING FULLERENES AND DERIVATIVES THEREOF AND IMPROVED METHODS OF MAKING FULLERENE DERIVATIVES - Improved methods of fullerene derivative production including use of less solvent, or elimination of solvent, as well as use of shorter reaction times and higher reaction temperatures. Methods useful for production of bis-, tris-, tetra-, penta-, and hexa-fullerene derivatives. Indene is a preferred derivative. The derivatives used in active layers for solar cell applications. | 07-09-2009 |
| 20100132782 | ORGANIC PHOTOVOLTAIC DEVICES COMPRISING FULLERENES AND DERIVATIVES THEREOF - Photovoltaic cells comprising an active layer comprising, as p-type material, conjugated polymers such as polythiophene and regioregular polythiophene, and as n-type material at least one fullerene derivative. The fullerene derivative can be C60, C70, or C84. The fullerene also can be functionalized with indene groups. Improved efficiency can be achieved. | 06-03-2010 |
| 20100147386 | Doped interfacial modification layers for stability enhancement for bulk heterojunction organic solar cells - Organic photovoltaic (OPV) devices comprising an organic semiconductor doped with a metal or organic dopant to form an interfacial modification layer, where the layer is disposed on an active layer including a conjugated polymer and a fullerene are described. In the layer, the organic semiconductor can be BPhen or TPBI, and the dopant can be a metal or an organic material. In the active layer, the conjugated polymer can be P3HT and the fullerene can be PCBM or indenyl-substituted fullerene. Improved OPV efficiency and lifetime can be achieved. Good testing results are obtained despite high humidity and high temperature, and modules can be made. | 06-17-2010 |
