109 results about "Electron channel" patented technology

A method is described for manufacturing an n-MOS semiconductor transistor. Recesses are formed in a semiconductor substrate adjacent a gate electrode structure. Silicon is embedded in the recesses via a selective epitaxial growth process. The epitaxial silicon is in-situ alloyed with substitutional carbon and in-situ doped with phosphorus. The silicon-carbon alloy generates a uniaxial tensile strain in the channel region between the source and drain, thereby increasing electron channel mobility and the transistor's drive current. The silicon-carbon alloy decreases external resistances by reducing contact resistance between source/drain and silicide regions and by reducing phosphorous diffusivity, thereby permitting closer placement of the transistor's source/drain and channel regions.

The invention discloses a self-supporting flexible carbon nano-tube paper composite electrode material for a lithium ion battery. A carbon nano-tube paper network of the material is formed by using interlaced carbon nano-tubes, and active anode material particles or cathode material particles of the lithium ion battery are compounded with carbon nano-tube paper to form the carbon nano-tube paper composite electrode material. In the electrode material, the carbon nano-tubes form an efficient three-dimensional conductive network, so that a better electron channel is provided for active material particles with low electrical conductivity. Because a bonding agent and a current collector are not needed, the electrode material has a higher active material ratio, and the performance of the electrode material is further improved. Meanwhile, the high mechanical property of the carbon nano-tube paper makes the composite electrode material show flexible characteristics, and as a flexible electrode material, the self-supporting flexible carbon nano-tube paper composite electrode material is hopeful to be widely used in next-generation flexible electronic equipment.

A metal-insulator-semiconductor high electron mobility transistor (MIS-HEMT) has a substrate in which an electron supply layer is interposed between an electron channel layer and the surface of the substrate. A pair of main electrodes are formed on the surface of the substrate. A recess is formed in the surface of the substrate between the main electrodes. A gate insulation film is formed on the surface of the substrate, at least between the first and second main electrodes, covering the inside walls and floor of the recess. A gate electrode is formed on the gate insulation film, filling in the recess. The gate insulation film has a crystal density of at least 2.9 g/cm³, which mitigates the reduction in threshold voltage caused by the recess.

The present invention relates to a method for fabricating FinFETs and the structure thereof. The present invention uses an additional mask to define regions forming semiconductor fins having high semiconductor-fin height. By making use of multiple etching processes of the insulating layer, structures with differences in the height of semiconductor fins are achieved. The method can be combined with current process for semiconductor-based FinFETs for overcoming effectively the problem of electron-channel-width quantization effect as well as improving the performance of FinFETs.

The invention provides an array carbon nano-tube/graphene platinum-supported catalyst for a fuel cell and a preparation method of the array carbon nano-tube/graphene platinum-supported catalyst, belonging to the field of electrochemistry. The catalyst comprises the following components in percentage by mass: 60-80% of array carbon nano-tube/graphene and 20-40% of platinum. The array carbon nano-tubes/graphene is used as a catalyst support, and the platinum serving as a metal component is loaded on the support. The preparation method comprises the steps of firstly, preparing a nickel/cobalt-supported graphene composite; then, growing an upright ordered carbon nano-tube on the graphene through chemical vapor deposition; and finally, reducing platinum on the support, namely the graphene-array carbon nano-tube. The support has a special structure, and the upright ordered carbon nano-tube grows on the graphene, so that the relatively large specific surface area is obtained, the utilization ratio of platinum can be increased, a smooth ion and electron channel is also provided for electro-catalytic reaction, the electro-catalytic reaction rate can be favorably increased, and finally, the catalytic efficiency of the catalyst and the utilization ratio of precious metal can be favorably increased.

The invention discloses a preparation method of self-supporting flexible composite electrode material used by a lithium ion battery. Graphene oxide is used as an adhesive, carbon nano tubes are used as a conductive agent and transition metal compound nanofibers are used as an active material precursor, and the bendable self-supporting flexible composite film with excellent mechanical properties is obtained by performing ultrasonic treatment, stirring, filtering and drying. The composite film not only has excellent electrochemical performance after being calcined with laser, but also could maintain excellent flexibility, and could be bent. In the material, a conductive network is formed by interlaced carbon nano tubes and graphene oxide obtained via hot reduction with laser so as to provide a better electronic channel for active material particles with bad electrical conductivity. Without using a binder and a current collector, the electrode material has better active material proportion and could further improve the energy density of the battery.

The invention discloses a directional carbon nano-tube composite cathode material for a lithium-sulfur secondary battery. A structure consisting of carbon nano-tubes with orientation, namely the directional carbon nano-tubes is used as a framework of the material, a carbon nano-tube/sulfur composite material is obtained by compounding, and the composite material can be used as the cathode material of the lithium-sulfur secondary battery. In a conductive network constructed by using disordered carbon nano-tubes, the contact resistance at a lap joint of the carbon nano-tubes in the conductive network is always greatly increased by the load of sulfur; however, with the adoption of the directional carbon nano-tubes, an electron channel contacts a current collector through one carbon nano-tube, so that the generation of a large amount of contact resistance is avoided, and an efficient conductive network is provided. Meanwhile, an ordered pore structure of a directional carbon nano-tube electrode also ensures that an ion channel is smooth, so that the cathode material has high cycle performance, is a high-performance cathode material, and is expected to promote further enhancement of the performance of the lithium-sulfur secondary battery and the industrial application of the lithium-sulfur secondary battery.

The invention belongs to the technical field of lithium ion battery electrode materials, and discloses a mesoporous lithium aluminum silicate coated doped single crystal ternary positive electrode material and a preparation method thereof, and particularly relates to a doped single crystal lithium nickel cobalt manganate ternary material (LiNi0.55CoxMnyM1-x-yO2@(LiAlSi2O6)z) coated with a mesoporous lithium aluminum silicate layer and a preparation method thereof. According to the preparation method disclosed by the invention, a single-crystal doped lithium nickel cobalt manganate base material is obtained through an in-situ doping co-precipitation-high-temperature solid-phase method; and the mesoporous lithium aluminum silicate layer with high speed lithium ions and electron channels is coated through a template-sol/gel-low-temperature annealing process to prepare the doped single crystal lithium nickel cobalt manganate positive electrode material (LiNi0.55CoxMnyM1-x-yO2@(LiAlSi2O6)z), wherein the material has a high first specific capacity of 185.5mAh/g, high high-voltage cycling stability and excellent rate performance.

A graphene oxide memory device includes a substrate, a lower electrode disposed on the substrate, an electron channel layer disposed on the lower electrode by using a graphene oxide, and an upper electrode disposed on the electron channel layer.

An organic semiconductor device and a method of fabricating the same are provided. The device includes: a first electrode; an electron channel layer formed on the first electrode; and a second electrode formed on the electron channel layer, wherein the electron channel layer comprises: a lower organic layer formed on the first electrode; a nano-particle layer formed on the lower organic layer and including predetermined sizes of nano-particles that are spaced a predetermined distance apart from each other; and an upper organic layer formed over the nano-particle layer. Accordingly, a highly integrated organic semiconductor device can be fabricated by a simple fabrication process, and nonuniformity of devices due to threshold voltage characteristics and downsizing of the device can resolved, so that a semiconductor device having excellent performance can be implemented.

The invention discloses a composite current collector which comprises a porous polymer film, a metal coating attached to the surface of the porous polymer film and a conductive coating attached to thesurface of the metal coating. The invention also discloses a preparation method of the composite current collector. The invention also discloses a lithium battery pole piece. According to the presentinvention, the ultra-thin porous polymer film is adopted, so that the physical and chemical properties of the current collector can be improved, belt breakage is reduced, the weight of the battery can be reduced, and the energy density of the battery is improved; after the ultrathin porous polymer film is plated with metal, micropores in the surface of the ultrathin porous polymer film are filledwith metal, metal plating layers at the two sides are communicated, electronic channels are increased, and the internal resistance is effectively reduced, so that when the battery is prepared, a metal tab does not need to be additionally introduced to a tab, it can be guaranteed that electrode slurry does not leak in the subsequent coating process, and production can be better introduced.

A semiconductor device and method of manufacturing thereof. The semiconductor device has at least one NMOS device and at least one PMOS device provided on a substrate. An electron channel of the NMOS device is aligned with a first direction. A hole channel of the PMOS device is aligned with a different second direction that forms an acute angle with respect to the first direction.

A vacuum pressure measuring device with an electron source has a reaction zone for forming ions by impact ionization, wherein the electron source communicates with the reaction zone via a passage for the electrons. The electron source is surrounded by an insulating housing with a vacuum chamber, and a partition part is designed as a membrane carrier, carrying a nanomembrane at least in one section, the membrane separating the vacuum chamber from the outer region in a gastight manner and being at least partially designed to be electron-permeable. The vacuum chamber has a cathode for the emission of electrons. In the region of and/or on the nanomembrane, an anode arrangement is provided such that electrons are conducted against the nanomembrane and at least partially through it. The nanomembrane abuts the vacuum chamber of the vacuum pressure measuring device.

The invention discloses a III-V group metal oxide semiconductor type luminescent field effect transistor (FET) and a method for preparing the same, wherein the FET comprises a p-type drain region, an active area, an n-type semiconductor layer, a buffer layer and a substrate which are stacked in turn in vertical direction; a p-type gate region is arranged at the left side of the transverse step structure of the n-type semiconductor layer, while an n-type source region is arranged at the right side of the step structure; a grid electrode oxidation layer and a grid electrode are stacked on the p-type gate region; an electronic channel, which is formed by a MOS structure on the surface of a gate region semiconductor, is arranged between the p-type gate region and the grid electrode oxidation layer; the n-type source region is provided with a source electrode, while the p-type drain region is provided with a drain electrode. The transverse structure of the step of the invention is used to control the luminous intensity of a device by means of metal-oxide-semiconductor contact field effect, while the vertical structure is used to generate recombination luminescence; moreover, the structure has high luminous efficiency and high brightness and is convenient for control.

The invention relates to a catalyst modified by a proton conductor and using a conductive polymer as a carrier and a preparation method thereof. The preparation method comprises the following steps of: adding conductive proton polymer solution into a mixed liquor of alcohol and water and adding salt solution of a metal precursor in the catalyst to prepare metal nano colloid modified by the conductive proton polymer; adding conductive polymer monomers into the prepared colloid; adding acid solution of protons until pH is less than 3; adding a polymerization initiator of the conductive polymer monomers to polymerize the monomers; and adding a carbon material, and mixing, filtering and drying the mixture to prepare the catalyst. Compared with the conventional Pt/C catalyst, the catalyst has the advantages of dual functions of conducting electricity and conducting the protons, wherein the conductive polymer has good stability and electric conductivity, and can improve binding force between metal particles of the catalyst and a carrier conductive proton polymer when used as a bonding agent; the conductive proton polymer modifying the catalyst particles of the metal can build a proton channel; and the carbon material can optimize water and gas channels and build an electron channel. The catalyst has the advantages of strong antioxidation capacity and improvement on service life.

The invention provides a silicon-based composite material for a negative active material, a negative plate and a lithium ion battery. The preparation method comprises the following steps: arranging single-walled carbon nanotubes distributed in a three-dimensional network shape and an optional first conductive agent in a solid electrolyte coating layer; a three-dimensional conductive network can beconstructed on the surfaces of silicon material particles. Due to the establishment of the three-dimensional conductive network, the electron transmission between the silicon material particles and between the silicon material particles and the graphite is enhanced. The smoothness of an electronic channel after silicon expansion is ensured. The electron transmission stability in the circulation process is improved. The utilization rate of silicon is increased, the first utilization rate of the silicon material is increased, the first effect and the battery capacity of a lithium ion battery containing the silicon-based composite material are improved, the SWCNT elasticity is large, the super mechanical property is 100 times that of steel, it is guaranteed that a conductive network is not changed when a silicon negative electrode expands during circulation, circulation attenuation is slowed down, and the circulation performance is improved.

Provided are a resistive memory device and a method of fabricating the same. The resistive memory device comprises an electron channel layer formed by means of a swelling process and an annealing process. Thus, conductive nanoparticles are uniformly dispersed in the electron channel layer to improve reliability of the resistive memory device. According to the method, an electron channel layer is formed by means of a printing process, a swelling process, and an annealing process. Thus, fabrication time is reduced.

The invention discloses a catalyst for hydrogen production and a preparation method thereof. In the catalyst for hydrogen production, eosin is used as a sensitizing agent, a carbon nano-tube is used as a carrier and a photoinduced electron channel, and a copper-based composite metal oxide is used as a catalyst promoter. The preparation method comprises the following steps of: mixing the carbon nano-tube and a metal saline solution, adding water, stirring for several hours, and evaporating water to dryness so as to obtain a carbon nano-tube and metal saline precursor; at the air atmosphere, calcining the precursor for hours so as to obtain a carbon nano-tube and copper-based composite metal oxide system; and soaking the carbon nano-tube and copper-based composite metal oxide system in an aqueous solution containing eosin Y under the protection of N2, and separating to obtain the catalyst for hydrogen production. Under the irradiation of visible light, the catalyst has higher hydrogen production activity and can be used for producing hydrogen by catalyzing and reducing water in visible light. The copper-based composite metal oxide can be used for replacing Pt to server as the catalyst promoter so that the non-platinization of the catalyst is realized; and therefore, the catalyst has a certain application value in the aspect of hydrogen production by reducing water through photocatalysis.

The invention relates to a graphene-based silicon carbon composite material and a preparation method thereof, and the preparation method comprises the following steps: respectively coating the surfaces of graphene oxide and nano silicon particles with organic polymer layers with opposite charges by adopting a precipitation co-distillation method to obtain a GO@poly composite material and a Si@polycomposite material; respectively ultrasonically dispersing the GO@poly composite material and the Si@poly composite material into water, uniformly mixing the composite materials and water, and carrying out high-temperature treatment in an H2/Ar atmosphere to obtain a graphene-based silicon carbon composite material. According to the composite material, surface-modified nano silicon is uniformly and firmly dispersed among graphene sheet layers with opposite charges through electrostatic attraction, and a communicated conductive carbon network is formed around the nano silicon through high-temperature pyrolysis, thereby providing an electronic channel in the charging and discharging process, and facilitating the maintaining of the structural integrity of the negative electrode active material. The prepared composite material is high in specific capacity, excellent in cycle performance and long in service life of the lithium ion battery.

The invention discloses a special-shaped ship metal pipe system connecting corrosion prevention structure. The structure comprises bolts (1) which are arranged on the peripheries of connectors of special-shaped metal pipe system flanges (7) and nuts (5) which are matched with the bolts (1). Composite electric insulation spacers (3) are arranged between the connectors of the flanges (7). The periphery of each bolt (1) is sleeved with a protective tube (4). Composite electric insulation washers (2) are arranged between the flanges (7) and the nuts (2). The invention further discloses a construction method of the prevention structure. By adoption of the special-shaped ship metal pipe system connecting corrosion prevention structure, the composite electric insulation spacers are used for isolating the pipe system butt flange face from fasteners, electronic channels generated through special-shaped metal contact are cut off, the inner walls and the outer walls of pipelines within a certainrange of a connecting structure and the two ends of the structure are coated with insulation enameled paint, the resistance of seawater in pipe systems at the two ends of a special-shaped metal jointis increased, ion channels in the seawater are cut off, and a good electric insulation effect can be achieved.