Patent application number | Description | Published |
20080230748 | DISPERSANT HAVING MULTIFUNCTIONAL HEAD AND PHOSPHOR PASTE COMPOSITION COMPRISING THE SAME - Disclosed is a dispersant having a multifunctional head, and a phosphor paste composition comprising the dispersant. The dispersant has a multifunctional head that comprises an acidic group, a basic group and an aromatic group, thereby enhancing an affinity for the surface of phosphor particles and improving dispersibility. | 09-25-2008 |
20080296539 | METHOD OF MODIFYING CARBON NANOTUBE USING RADICAL INITIATOR, AND DISPERSION LIQUID AND ELECTRODE COMPRISING THE CARBON NANOTUBE MODIFIED BY USING THE METHOD - Provided is a method of modifying carbon nanotubes, the method including: preparing a mixed solution in which a radical initiator and a carbon nanotube are dispersed; applying energy to the mixed solution to decompose the radical initiator into a radical; and reacting the decomposed radical with a surface of the carbon nanotube, wherein the radical which has reacted with the carbon nanotube is detached from the carbon nanotube after the reaction with the carbon nanotube. In the method of modifying carbon nanotube, a radical is reacted with a carbon nanotube and then separated from the carbon nanotube to thus modify the surface of the carbon nanotube without chemical bonding. Accordingly, the conductivity of the carbon nanotube can be increased. | 12-04-2008 |
20080296683 | CARBON NANOTUBE HAVING IMPROVED CONDUCTIVITY, PROCESS OF PREPARING THE SAME, AND ELECTRODE COMPRISING THE CARBON NANOTUBE - Provided are a method of doping carbon nanotubes, p-doped carbon nanotubes prepared using the method, and an electrode, a display device or a solar cell including the carbon nanotubes. Particularly, a method of doping carbon nanotubes having improved conductivity by reforming the carbon nanotubes using an oxidizer, doped carbon nanotubes prepared using the method, and an electrode, a display device or a solar cell including the carbon nanotubes are provided | 12-04-2008 |
20080299374 | TRANSPARENT ELECTRODE COMPRISING CARBON NANOTUBE AND METHOD OF PREPARING THE SAME - Disclosed is a method of manufacturing a transparent electrode having a carbon nanotube. The carbon nanotube powder is dispersed in a solvent to form a carbon nanotube ink. The carbon nanotube ink is coated on a substrate to prepare a carbon nanotube film. The carbon nanotube has a defect formed on a surface thereof. The defect is formed through an acid treatment process of immersing the carbon nanotube powder or the carbon nanotube film in a nitric acid, a sulfuric acid, a hydrochloric acid, a phosphoric acid, or a mixture thereof. The defect can be formed through an ultrasonic treatment process of exposing the carbon nanotube powder or the carbon nanotube film to an ultrasonic wave having a predetermined frequency and intensity. | 12-04-2008 |
20090020732 | METHOD OF SELECTIVELY SEPARATING CARBON NANOTUBES, ELECTRODE COMPRISING METALLIC CARBON NANOTUBES SEPARATED BY THE METHOD AND OLIGOMER DISPERSANT FOR SELECTIVELY SEPARATING CARBON NANOTUBES - Provided is method of selectively separating carbon nanotubes into metallic carbon nanotubes and semiconducting carbon nanotubes, the method including: preparing a mixture including a dispersant, carbon nanotubes, and a solvent; dispersing the carbon nanotubes in the mixture; and separating the semiconducting carbon nanotubes from the mixture in which the carbon nanotubes are dispersed, wherein the dispersant is an oligomer including about 2 to about 24 repeat units, each including a head moiety and a tail moiety, wherein the head moiety comprises 1 to about 5 aromatic hetero rings, and the tail moiety comprises a hydrocarbon chain or chains connected to the head moiety. | 01-22-2009 |
20090068470 | GRAPHENE SHELL AND PROCESS OF PREPARING THE SAME - Provided are a process for economically preparing a graphene shell having a desired configuration which is applicable in various fields wherein in the process the thickness of the graphene shell can be controlled, and a graphene shell prepared by the process. | 03-12-2009 |
20090068471 | GRAPHENE SHEET AND PROCESS OF PREPARING THE SAME - Provided are a graphene sheet and a process of preparing the same. Particularly, a process of economically preparing a large-area graphene sheet having a desired thickness and a graphene sheet prepared by the process are provided. | 03-12-2009 |
20090071533 | TRANSPARENT ELECTRODE COMPRISING GRAPHENE SHEET, AND DISPLAY AND SOLAR CELL INCLUDING THE ELECTRODE - Provided is a transparent electrode including a graphene sheet. A transparent electrode having high conductivity, low sheet resistance, and low surface roughness can be prepared by employing the graphene sheet. | 03-19-2009 |
20090072198 | SULFUR-CONTAINING DISPERSANT AND SULFIDE PHOSPHOR PASTE COMPOSITION COMPRISING THE SAME - A sulfide phosphor paste composition comprising a sulfur-containing dispersant, and a fluorescent film prepared therefrom, are provided. The sulfur-containing dispersant has a dual head structure containing both a carboxyl group and a thiol group or a structure containing a thiol or thiophene group as a head group. An oligomeric sulfur-containing dispersant is also provided. Adsorption of the dispersant on the surface of the sulfide phosphor prevents aggregation of the phosphor particles, and thereby improves the dispersibility of the sulfide phosphor paste composition, the homogeneity of the phosphor in the paste composition, and the density of a film produced from the paste composition. Fluorescent films and display devices produced from the phosphor paste composition exhibit improved luminescent properties and excellent processability. | 03-19-2009 |
20090101964 | Method of forming nano dots, method of fabricating the memory device including the same, charge trap layer including the nano dots and memory device including the same - Provided are a method of forming nano dots, method of fabricating a memory device including the same, charge trap layer including the nano dots and memory device including the same. The method of forming the nano dots may include forming cores, coating surfaces of the cores with a polymer, and forming graphene layers covering the surfaces of the cores by thermally treating the cores coated with the polymer. Also, the cores may be removed after forming the graphene layers. In addition, the surfaces of the cores may be coated with a graphitization catalyst material before coating the cores with the polymer. Also, the cores may include metal particles that trap charges and may also function as a graphitization catalyst. | 04-23-2009 |
20090110627 | GRAPHENE SHEET AND METHOD OF PREPARING THE SAME - An economical method of preparing a large-sized graphene sheet having a desired thickness includes forming a film, the film comprising a graphitizing catalyst; heat-treating a gaseous carbon source in the presence of the graphitizing catalyst to form graphene; and cooling the graphene to form a graphene sheet. A graphene sheet prepared according to the disclosed method is also described. | 04-30-2009 |
20090127560 | Poly-crystalline thin film, thin film transistor formed from a poly-crystalline thin film and methods of manufacturing the same - Example embodiments relate to a poly-crystalline silicon (Si) thin film, a thin film transistor (TFT) formed from a poly-crystalline silicon (Si) thin film and methods of manufacturing the same. The method of manufacturing the poly-crystalline Si thin film includes forming an active layer formed of amorphous Si on a substrate, coating a gold nanorod on the active layer, and irradiating infrared rays onto the gold nanorod to crystallize the active layer. | 05-21-2009 |
20090146111 | REDUCED GRAPHENE OXIDE DOPED WITH DOPANT, THIN LAYER AND TRANSPARENT ELECTRODE - Disclosed herein is a reduced graphene oxide doped with a dopant, and a thin layer, a transparent electrode, a display device and a solar cell including the reduced graphene oxide. The reduced graphene oxide doped with a dopant includes an organic dopant and/or an inorganic dopant. | 06-11-2009 |
20090155161 | METHOD OF PREPARING GRAPHENE SHELL AND GRAPHENE SHELL PREPARED USING THE METHOD - Provided are a method of preparing a graphene shell and a graphene shell prepared using the method. A first heat treatment is performed on a mixture of an organic solvent and a graphitization catalyst so as to carburize the graphitization catalyst with carbon decomposed from the organic solvent. The graphitization catalyst is in the form of particles. A second heat treatment process is performed on the carburized graphitization catalyst in an inert or reductive gas atmosphere to thereby form graphene shells on surfaces of the carburized graphitization catalyst | 06-18-2009 |
20090155561 | SINGLE CRYSTALLINE GRAPHENE SHEET AND PROCESS OF PREPARING THE SAME - A single-crystal graphene sheet includes a polycyclic aromatic molecule wherein a plurality of carbon atoms are covalently bound to each other, the single-crystal graphene sheet comprising between about 1 layer to about 300 layers; and wherein a peak ratio of a Raman D band intensity to a Raman G band intensity is equal to or less than 0.2. Also described is a method for preparing a single-crystal graphene sheet, the method includes forming a catalyst layer, which includes a single-crystal graphitizing metal catalyst sheet; disposing a carbonaceous material on the catalyst layer; and heat-treating the catalyst layer and the carbonaceous material in at least one of an inert atmosphere and a reducing atmosphere. Also described is a transparent electrode including a single-crystal graphene sheet. | 06-18-2009 |
20090324897 | GRAPHENE PATTERN AND PROCESS OF PREPARING THE SAME - Provided are a graphene pattern and a process of preparing the same. Graphene is patterned in a predetermined shape on a substrate to form the graphene pattern. The graphene pattern can be formed by forming a graphitizing catalyst pattern on a substrate, contacting a carbonaceous material with the graphitizing catalyst and heat-treating the resultant. | 12-31-2009 |
20100117034 | Organic semiconductor material using CNTs increased, organic semiconductor thin film using the same and organic semiconductor device employing the thin film - Example embodiments of the present invention relate to an organic semiconductor material using carbon nanotubes having increased semiconductivity, an organic semiconductor thin film using the same and an organic semiconductor device employing the thin film. By using the organic semiconductor material according to example embodiments of the present invention, a room-temperature wet process may be applied and a high-performance organic semiconductor device capable of simultaneously exhibiting increased electrical properties is provided. | 05-13-2010 |
20100202035 | ELECTROCHROMIC DEVICE AND METHOD OF FABRICATING THE SAME - An electrochromic device includes a first substrate, a second substrate facing the first substrate, a first electrode disposed on the first substrate, a carbon nano-structured electrode layer disposed on the first electrode, a second electrode disposed on the second substrate, an electrochromic layer disposed on the second electrode, and an electrolyte layer interposed between the first substrate and the second substrate. | 08-12-2010 |
20100294998 | AROMATIC IMIDE-BASED DISPERSANT FOR CARBON NANOTUBES AND CARBON NANOTUBE COMPOSITION COMPRISING THE SAME - Disclosed herein are an aromatic imide-based dispersant for CNTs and a carbon nanotube composition comprising the same. Having an aromatic ring structure advantageously realizing adsorption on carbon nanotubes, the dispersant, even if used in a small amount, can disperse a large quantity of carbon nanotubes. | 11-25-2010 |
20110003907 | DISPERSANT FOR CARBON NANOTUBES AND CARBON NANOTUBE COMPOSITION COMPRISING THE SAME - The present invention discloses a dispersant for carbon nanotubes having excellent dispersion ability and to a carbon nanotube composition including the dispersant. In the dispersant, the heads and tails of the dispersant are regioregularly arranged in one direction, and the structural properties of the dispersant are controlled such that the ratio of heads to tails is 1 or more, thereby effectively stabilizing and dispersing carbon nanotubes in various dispersion media, such as an organic solvent, water, a mixture thereof and the like, compared to conventional dispersants. | 01-06-2011 |
20110033677 | GRAPHENE BASE AND METHOD OF PREPARING THE SAME - A graphene base, including: graphene; and a substrate, wherein the graphene is formed directly on at least one surface of the substrate, and at least about 90 percent of an area of the surface of the substrate does not have a graphene wrinkle. | 02-10-2011 |
20110086176 | CARBON NANOTUBE HAVING IMPROVED CONDUCTIVITY, PROCESS OF PREPARING THE SAME, AND ELECTRODE COMPRISING THE CARBON NANOTUBE - Provided are a method of doping carbon nanotubes, p-doped carbon nanotubes prepared using the method, and an electrode, a display device or a solar cell including the carbon nanotubes. Particularly, a method of doping carbon nanotubes having improved conductivity by reforming the carbon nanotubes using an oxidizer, doped carbon nanotubes prepared using the method, and an electrode, a display device or a solar cell including the carbon nanotubes are provided | 04-14-2011 |
20110089376 | DISPERSANT HAVING MULTIFUNCTIONAL HEAD AND PHOSPHOR PASTE COMPOSITION COMPRISING THE SAME - Disclosed is a dispersant having a multifunctional head, and a phosphor paste composition comprising the dispersant. The dispersant has a multifunctional head that comprises an acidic group, a basic group and an aromatic group, thereby enhancing an affinity for the surface of phosphor particles and improving dispersibility. | 04-21-2011 |
20110095268 | TRANSISTOR AND FLAT PANEL DISPLAY INCLUDING THIN FILM TRANSISTOR - A transistor includes at least three terminals comprising a gate electrode, a source electrode and a drain electrode, an insulating layer disposed on a substrate, and a semiconductor layer disposed on the substrate, wherein a current which flows between the source electrode and the drain electrode is controlled by application of a voltage to the gate electrode, where the semiconductor layer includes a graphene layer and at least one of a metal atomic layer and a metal ion layer, and where the metal atomic layer or the metal ion layer is interposed between the graphene layer and the insulating layer. | 04-28-2011 |
20110104442 | GRAPHENE SHEET, GRAPHENE BASE INCLUDING THE SAME, AND METHOD OF PREPARING THE GRAPHENE SHEET - A graphene sheet including graphene comprising ten or fewer wrinkles per 1,000 square micrometers of the graphene. | 05-05-2011 |
20110127471 | DOPED GRAPHENE, METHOD OF MANUFACTURING THE DOPED GRAPHENE, AND A DEVICE INCLUDING THE DOPED GRAPHENE - A composition including graphene; and a dopant selected from the group consisting of an organic dopant, an inorganic dopant, and a combination including at least one of the foregoing. | 06-02-2011 |
20110227002 | AROMATIC IMIDE-BASED DISPERSANT FOR CARBON NANOTUBES AND CARBON NANOTUBE COMPOSITION COMPRISING THE SAME - Disclosed herein are an aromatic imide-based dispersant for CNTs and a carbon nanotube composition comprising the same. Having an aromatic ring structure advantageously realizing adsorption on carbon nanotubes, the dispersant, even if used in a small amount, can disperse a large quantity of carbon nanotubes. | 09-22-2011 |
20110237714 | DISPERSANT FOR CARBON NANOTUBE AND COMPOSITION COMPRISING THE SAME - A dispersant for a carbon nanotube and a composition comprising the same are provided, wherein the dispersant is comprised of a structure including a head part composed of an electron-rich atom and an aromatic ring having a high affinity for the carbon nanotube and a tail part having an affinity for a dispersion medium, and thus exhibits excellent stabilizing and dispersing effects of the carbon nanotube in a variety of dispersion media including organic solvents, water or mixtures thereof. Use of the dispersant in accordance with the present invention enables convenient preparation of carbon nanotube compositions necessary for a variety of industrial fields such as emitters of field emission displays (FEDs), carbon nanotube inks, printable carbon nanotubes and the like. | 09-29-2011 |
20110244210 | GRAPHENE SHEET AND METHOD OF PREPARING THE SAME - An economical method of preparing a large-sized graphene sheet having a desired thickness includes forming a film, the film comprising a graphitizing catalyst; heat-treating a gaseous carbon source in the presence of the graphitizing catalyst to form graphene; and cooling the graphene to form a graphene sheet. A graphene sheet prepared according to the disclosed method is also described. | 10-06-2011 |
20110253941 | DISPERSANT HAVING MULTIFUNCTIONAL HEAD AND PHOSPHOR PASTE COMPOSITION COMPRISING THE SAME - Disclosed is a dispersant having a multifunctional head, and a phosphor paste composition comprising the dispersant. The dispersant has a multifunctional head that comprises an acidic group, a basic group and an aromatic group, thereby enhancing an affinity for the surface of phosphor particles and improving dispersibility. | 10-20-2011 |
20110285951 | CNT COMPOSITION, CNT LAYER STRUCTURE, LIQUID CRYSTAL DISPLAY DEVICE, METHOD OF PREPARING CNT LAYER STRUCTURE, AND METHOD OF PREPARING LIQUID CRYSTAL DISPLAY DEVICE - A carbon nanotube (“CNT”) composition includes CNTs, a dispersing agent containing a reactive functional group, and at least one kind of dispersion medium. A CNT layer structure includes a substrate and a CNT layer disposed on the substrate, the CNT layer including the CNT composition including the CNTs arranged in a network-shape, and an organic material adsorbed to the CNTs and chemically bonded to the substrate. A liquid crystal display device includes the CNT layer structure. A method of manufacturing the CNT layer structure uses the CNT composition. A method of manufacturing the liquid crystal display device includes forming a pixel electrode on a passivation layer, by using the method of manufacturing the CNT layer structure. | 11-24-2011 |
20110293850 | TRANSPARENT CARBON NANOTUBE ELECTRODE WITH NET-LIKE CARBON NANOTUBE FILM AND PREPARATION METHOD THEREOF - Provided is a transparent carbon nanotube (CNT) electrode comprising a net-like (i.e., net-shaped) CNT thin film and a method for preparing the same. More specifically, a transparent CNT electrode comprises a transparent substrate and a net-shaped CNT thin film formed on the transparent substrate, and a method for preparing a transparent CNT electrode, comprising forming a thin film using particulate materials and CNTs, and then removing the particulate materials to form a net-shaped CNT thin film. The transparent CNT electrode exhibits excellent electrical conductivity while maintaining high light transmittance. Therefore, the transparent CNT electrode can be widely used to fabricate a variety of electronic devices, including image sensors, solar cells, liquid crystal displays, organic electroluminescence (EL) displays, and touch screen panels, that have need of electrodes possessing both light transmission properties and conductive properties. | 12-01-2011 |
20120070641 | GRAPHENE SHEET AND PROCESS OF PREPARING THE SAME - Provided are a graphene sheet and a process of preparing the same. Particularly, a process of economically preparing a large-area graphene sheet having a desired thickness and a graphene sheet prepared by the process are provided. | 03-22-2012 |
20120080086 | Transparent Electrode Comprising Doped Graphene, Process of Preparing The Same, And Display Device And Solar Cell Comprising The Electrode - A transparent electrode on at least one surface of a transparent substrate may include graphene doped with a p-dopant. The transparent electrode may be efficiently applied to a variety of display devices or solar cells. | 04-05-2012 |
20120088123 | GRAPHENE SHELL AND PROCESS OF PREPARING THE SAME - Provided are a process for economically preparing a graphene shell having a desired configuration which is applicable in various fields wherein in the process the thickness of the graphene she can be controlled, and a graphene shell prepared by the process. | 04-12-2012 |
20120132862 | CARBON NANOTUBE DISPERSION AND METHOD OF PREPARING TRANSPARENT ELECTRODE USING THE CARBON NANOTUBE DISPERSION - Provided is a carbon nanotube dispersion including: carbon nanotubes, a solvent, and a dispersant, in which a mutifunctional ethylene oxide-propylene oxide block copolymer acts as the dispersant. The carbon nanotube dispersion provides excellent dispersion stability in aqueous and organic systems. Therefore, the carbon nanotube dispersion is suitable for a transparent electrode. | 05-31-2012 |
20120141666 | TRANSPARENT CARBON NANOTUBE ELECTRODE USING CONDUCTIVE DISPERSANT AND PRODUCTION METHOD THEREOF - Disclosed is a transparent carbon nanotube (CNT) electrode using a conductive dispersant. The transparent CNT electrode comprises a transparent substrate and a CNT thin film formed on a surface the transparent substrate wherein the CNT thin film is formed of a CNT composition comprising CNTs and a doped dispersant. Further disclosed is a method for producing the transparent CNT electrode. | 06-07-2012 |
20120267041 | METHOD OF FORMING MULTI-LAYER GRAPHENE - A method of forming a multi-layer graphene includes forming a stack of a graphitizing metal catalyst layer and graphene by repeatedly performing a cycle of first forming the graphitizing metal catalyst layer on a substrate, and then forming the graphene on the graphitizing metal catalyst layer, and removing the graphitizing metal catalyst layer. | 10-25-2012 |
20120325296 | GRAPHENE-ON-SUBSTRATE AND TRANSPARENT ELECTRODE AND TRANSISTOR INCLUDING THE GRAPHENE-ON-SUBSTRATE - A graphene-on-substrate includes a substrate, a first intermediate layer disposed on the substrate, and graphene disposed on the first intermediate layer, where the first intermediate layer comprises a material having an intermediate polarity value between a polarity of the substrate and a polarity of the graphene. | 12-27-2012 |
20130095305 | GRAPHENE PATTERN AND PROCESS OF PREPARING THE SAME - Provided are a graphene pattern and a process of preparing the same. Graphene is patterned in a predetermined shape on a substrate to form the graphene pattern. The graphene pattern can be formed by forming a graphitizing catalyst pattern on a substrate, contacting a carbonaceous material with the graphitizing catalyst and heat-treating the resultant. | 04-18-2013 |
20130187084 | DISPERSED SOLUTION OF CARBON NANOTUBES AND METHOD OF PREPARING THE SAME - Provided are a dispersed solution of carbon nanotubes including carbon nanotubes, an organic solvent, a spacer, and a dispersant. The dispersed solution of the carbon nanotubes includes both the spacer reducing the van der Waals force of the carbon nanotubes and preventing the bundling of the carbon nanotubes and the dispersant maintaining the debundling and stability of the carbon nanotubes, thereby improving the dispersibility of the carbon nanotubes. The preparation method of the dispersed solution of the carbon nanotubes can easily produce a dispersed solution of carbon nanotubes without separately performing a chemical treatment. | 07-25-2013 |
20130305927 | GAS SEPARATION MEMBRANE AND METHOD OF PREPARING THE SAME - A gas separation membrane including a porous layered support; and a gas separating active layer which is disposed on the porous layered support and includes a functionalized graphene. | 11-21-2013 |
20130309571 | NEGATIVE ELECTRODE FOR LITHIUM BATTERY, LITHIUM BATTERY INCLUDING THE SAME, AND METHODS OF MANUFACTURE THEREOF - A negative electrode including: a metal layer including lithium; and a platy carbonaceous material layer including a carbonaceous material having a plate structure and disposed on the metal layer. | 11-21-2013 |
20140014970 | METHOD OF FABRICATING SINGLE-LAYER GRAPHENE - A method of fabricating a single-layer graphene on a silicon carbide (SiC) wafer includes forming a plurality of graphene layers on the SiC wafer such that the plurality of graphene layers are on a buffer layer of the SiC wafer, the buffer layer being formed of carbon; removing the plurality of graphene layers from the buffer layer; and converting the buffer layer to a single-layer graphene. | 01-16-2014 |
20140110670 | DOPED GRAPHENE STRUCTURE COMPRISING HYDROPHOBIC ORGANIC MATERIAL, METHOD FOR PREPARING THE SAME, AND TRANSPARENT ELECTRODE, DISPLAY DEVICE AND SOLAR CELL COMPRISING THE ELECTRODE - A hydrophobic organic layer may be formed on a surface of a graphene doped with a dopant to improve stability of the doped graphene with respect to moisture and temperature. Thus, the transparent electrode having the doped graphene containing the hydrophobic organic layer may be usefully applied in solar cells or display devices. | 04-24-2014 |
20140220348 | GRAPHENE SHELL AND PROCESS OF PREPARING THE SAME - Provided is a process for economically preparing a graphene shell having a desired configuration which is applicable in various fields wherein in the process the thickness of the graphene shell can be controlled, and a graphene shell prepared by the process. | 08-07-2014 |
20140263166 | GRAPHENE BASE AND METHOD OF PREPARING THE SAME - A graphene base, including: graphene; and a substrate, wherein the graphene is formed directly on at least one surface of the substrate, and at least about 90 percent of an area of the surface of the substrate does not have a graphene wrinkle. | 09-18-2014 |