87 results about "Re oxidation" patented technology

A method of producing an integrated circuit eliminates the need to re-oxidize polysilicon gate conductors and lines prior to removal of a hard mask used to form the gate conductors. A layer of polysilicon is provided above a semiconductor substrate. The layer of polysilicon is then doped. A mask material comprising amorphous carbon is provided above the layer of polysilicon, and the layer of mask material is patterned to form a mask. A portion of the layer of polysilicon is removed according to the mask, and the mask is removed.

Methods for uniformly tip doping a silicon body of a non-planar transistor and devices and systems formed by such methods. In one embodiment, a method can include vertical tip ion implantation of a silicon body with at least three surfaces on a substrate followed by conformal deposition of a dielectric material. The dielectric material can be selectively etched to expose a top surface of the silicon body followed by selective re-oxidation of the top surface for form a mask. The remaining dielectric material can be removed followed by angled ion implantation of at least two sidewalls of the silicon body. The mask can be removed resulting in a silicon body with uniform doping.

There are provided a chamber having openings which are opened to an outer air and through which a solder-adhered object w is passed and having a heating/melting area and carrying areas arranged adjacent to the heating/melting area, a carrying mechanism for carrying the solder-adhered object w into the heating/melting area, a formic-acid supplying means for supplying a formic acid into the heating/melting area, an exhausting means for exhausting a gas from the heating/melting area and its neighboring area to lower a pressure in the heating/melting area rather than an outer air, heating means for heating directly or indirectly the solder-adhered object w in the heating/melting area, and air-stream suppressing means for disturbing a gas flow between the heating/melting area and the carrying areas. Accordingly, there can be provided a solder jointing system for jointing solder layers of the semiconductor device, the electronic device, or the like to the wirings or the pads, which is capable of having a high processing ability and preventing re-oxidation.

The present invention is related to a method for fabricating a transistor with a polymetal gate electrode structure. The method includes the steps of: forming a gate insulation layer on a substrate; forming a patterned gate stack structure on the gate insulation layer, wherein the patterned stack structure includes a polysilicon layer as a bottom layer and a metal layer as an upper layer; forming a silicon oxide-based capping layer along a profile containing the patterned gate stack structure and on the gate insulation layer at a predetermined temperature that prevents oxidation of the metal layer; and performing a gate re-oxidation process.

A method for fabricating a semiconductor device includes forming a gate insulation layer over a substrate, forming a first gate conductive layer over the gate insulation layer, forming a barrier metal over the first gate conductive layer, sequentially forming a second gate conductive layer and a gate hard mask over the barrier metal, patterning the gate hard mask, the second gate conductive layer, the barrier metal, the first gate conductive layer, and the gate insulation layer to form a gate pattern, and performing a plasma selective gate re-oxidation process on the gate pattern.

The invention discloses a method and a system for modularized combined treatment of high-difficulty organic waste water, and the treatment system comprises: a primary settling tank, an adjusting tank, a reinforced flocculation tank, a precipitation separation tank, a secondary flocculation settling tank, a buffering water tank, a pH adjusting tank, a primary honeycomb microelectrolytic tank, a flocculation settling tank, a secondary honeycomb microelectrolytic tank, an intermediate tank, a heat exchanger, a microwave catalytic oxidation device, a secondary catalytic oxidation pot, and a re-oxidation filter pipe. The treatment method adopts a combined technical scheme of a multistage honeycomb iron carbon microelectrolytic module, a reinforced flocculation module and a microwave electro-catalytic oxidation module; the invention has the characteristics of high applicability, good treatment effect, and unit modularization; the modules can be combined and cascaded freely according to the waste water condition, and thus different waste water treatment effect requirements and waste water quantity requirements are adapted; the operation cost is low; the sludge amount is low; no secondary pollution is caused; and the method is an environment-friendly high-difficulty waste water treatment method.

The invention provides a molecular blot absorbent of a SiO2 particle surface in a water phase system and a preparation method thereof, which overcomes the defects of low identification ability and low service life caused by mismatched solvent polarity or by using toxic organic solvent in synthesis in the prior art. The preparation method is provided with the following steps: firstly, activating treatment is adopted to SiO2 particles, and the particles react with a functional monomer and target phenolic pollutants such as one of chlorophenols or nitrophenol to form a complex type precursor body; the molecular blot absorbent of the SiO2 particle surface is obtained through polymerization and post treatment after the re-oxidation. The molecular blot absorbent of the invention is simple in preparation technique and low in cost; the absorbent has high selectivity in target molecules, a fast balancing speed in absorption and de-sorption and can be repeatedly used.

Disclosed is a method for fabricating a semiconductor device with a polymetal gate electrode formed by a partial gate recessing process. The method includes the steps of forming a gate structure including a gate dielectric layer, a polysilicon layer, a metal layer, an etch stop layer and a sacrificial layer sequentially formed on a substrate; selectively performing a re-oxidation process to the gate structure; forming a spacer on each sidewall of the gate structure; implanting ions in the substrate for forming source/drain regions; selectively removing the sacrificial layer of the gate structure to form a recess; and filling an insulating hard mask into the recess for use in a self-aligned contact etching process.

The invention discloses the application of nano reduced graphene oxide serving as an antibacterial material, in particular relates to the application of nano reduced graphene oxide suspension or a nano reduced graphene oxide membrane serving as an antibacterial material. The preparation method of the nano reduced graphene oxide suspension comprises the following steps of: pre-oxidation of graphite, separation of a pre-oxidized product, re-oxidation, purification of an oxidation product and reduction of the oxidation product. The nano reduced graphene oxide film is prepared by performing suction filtration on the nano reduced graphene oxide suspension by using a polyvinylidene fluoride (PVDF) membrane of which the mesh is 0.22 mu m. Through the application of the nano reduced graphene oxide serving as the antibacterial material, the nano reduced graphene oxide serving as an additive can be prepared into a product with an antibacterial property or prepared into an antibacterial coating material, which is applied to medicines and daily life.

A process for fabricating a semiconductor device 20 that includes providing semiconductor substrate 28 having a core region 24 and a peripheral gate region 26. The semiconductor substrate 28 has at least one shallow trench isolation region 30 and at least one nitrogen-contaminated region 36 in the peripheral gate region 26. A tunnel oxide layer 34 overlies the semiconductor substrate 28 and a first polysilicon layer 38 overlies the tunnel oxide layer 34 in the core region 24. An ONO layer 40 overlies the first polysilicon layer 38 in the core region 24. The process further includes growing a sacrificial oxide layer 42 overlying the nitrogen-contaminated region 36 in the peripheral gate region 26, wherein oxygen from within the sacrificial oxide layer 42 diffuses into the nitrogen-contaminated region 36 and forms silicon dioxide. By allowing oxygen from within the sacrificial oxide layer 42 to diffuse into the nitrogen-contaminated region 36 and form silicon dioxide, the nitrogen 56 can be removed from within the semiconductor substrate 28 by removing the silicon dioxide.

A high temperature, redox tolerant fuel cell anode electrode and method of fabrication in which the anode electrode is pre-conditioned by application of an initial controlled redox cycle to the electrode whereby an initial re-oxidation of the anode electrode is carried out at temperatures less than or equal to about 650° C.

A BaTiO3-type semiconducting ceramic material which has undergone firing in a reducing atmosphere and re-oxidation, wherein the relative density of the ceramic material after sintering is about 85-90%. A process for producing the semiconducting ceramic material of the present invention and a thermistor containing the semiconducting ceramic material are also disclosed.

A semiconductor device and method of production are disclosed, the method including forming a preliminary gate electrode on a semiconductor substrate, the preliminary gate electrode including a gate oxide layer pattern and a conductive layer pattern stacked on the gate oxide layer pattern, and performing a re-oxidation process for curing damage of the semiconductor substrate and/or a sidewall of the conductive layer pattern, when the preliminary gate electrode is formed by forming an oxide layer on an outer surface of the preliminary gate electrode and on the semiconductor substrate, by supplying an oxygen gas and a chlorine-including gas while restraining a thickness of the gate oxide layer pattern from being increased; and the semiconductor device comprising a preliminary gate electrode formed on a semiconductor substrate, the preliminary gate electrode including a gate oxide layer pattern and a conductive layer pattern stacked on the gate oxide layer pattern, and a re-oxidized semiconductor substrate and/or a sidewall of the conductive layer pattern, with damage cured therein by supplying an oxygen gas and a chlorine-including gas while restraining a thickness of the gate oxide layer pattern from being increased.

A semiconductor structure includes a PMOS device and an NMOS device. The PMOS device includes a first gate dielectric on a semiconductor substrate, a first gate electrode on the first gate dielectric, and a first gate spacer along sidewalls of the first gate electrode and the first gate dielectric. The NMOS device includes a second gate dielectric on the semiconductor substrate, a second gate electrode on the second gate dielectric, a nitrided polysilicon re-oxidation layer having a vertical portion and a horizontal portion wherein the vertical portion is on sidewalls of the second gate electrode and the second gate dielectric and wherein the horizontal portion is on the semiconductor substrate, and a second gate spacer on sidewalls of the second gate electrode and the second gate dielectric, wherein the second gate spacer is on the horizontal portion of the nitrided polysilicon re-oxidation layer.

The invention discloses a preparation method for carbon extracting and manganese retaining of high-manganese high-silicon and high-phosphorus molten iron through converter smelting, wherein the high-manganese high-silicon and high-phosphorus molten iron comprises, by weight, 1.10-1.50% of Mn, 0.70-1.00% of Si, 0.120-0.170% of P, and 0.035% or the less of S. According to the preparation method, theprocesses such as slag retaining operation, double-slag slag making process, less slag smelting, constant-pressure gun changing operation in the smelting process, converter direct lowest-gun-positiongun pressing operation, slag washing in the steel discharging process, and whole-process bottom argon blowing are adopted and integrally innovated, thus kinetics and thermodynamic conditions of a smelting reaction are optimized, the good smelting slagging dephosphorization and desulfurization effects are obtained, splashing of molten steel and slag in the smelting process is avoided, the distribution concentration in the slag (MnO) is effectively increased, reduction in the slag (MnO) at the smelting medium stage is promoted, re-oxidation of Mn in the molten steel at the smelting later stageis lowered, the end point molten steel residual Mn content (0.35-0.55wt%) is significantly increased, the adding amount of a manganese-series alloy in the deoxidizing alloying process is reduced, steelmaking alloy consumption and the alloying cost are significantly lowered, and the product market competitiveness is improved.

The invention relates to direct alloying steelmaking process for manganese oxide composite briquettes used for a re-blowing revolving furnace. The technical scheme comprises the following steps of: when the carbon content of molten steel in the revolving furnace is reduced to less than 0.1 percent and the molten steel reaches the temperature of between 1,650 and 1,750DEG C, and adding manganese oxide composite briquettes into the revolving furnace at one time, wherein the manganese oxide composite briquettes, which undergo cold pressing and mixed with carbon, are quickly heated to above 1,500 DEG C by the heat of the molten steel in the revolving furnace, the manganese oxide is quickly self-reduced in the manganese oxide composite briquettes which undergo cold pressing and mixed with carbon, so that the aim of the direct alloying of the molten steel is achieved. Oxygen blowing is stopped in the revolving furnace after the manganese oxide composite briquettes are added into the revolving furnace in order to avoid the re-oxidation of manganese, but the uniformization of manganese in the molten steel is enforced by the bottom-blowing strengthening molten pool stirring of the revolving furnace. The process of the invention has the advantages of simple process, easy operation and control, high manganese yield, great energy conservation, low CO2 emission and low production cost of the alloying of the manganese in the molten steel.

The invention discloses a method for manufacturing a semiconductor device layer. The method comprises the following steps of: after a well is formed on a substrate of a semiconductor device, forming an isolation shallow trench, and forming a grid on the substrate of the semiconductor device; performing ion implantation of carbon impurity on the grid and the substrate of the semiconductor device; after the surface of the grid and the surface of the substrate of the semiconductor device are re-oxidized, performing light dope on the grid and the substrate of the semiconductor device to form a shallow junction on the substrate of the semiconductor device; forming a nitrogen oxide side wall of the grid, doping the grid and the substrate of the semiconductor device, and performing deposition on the semiconductor device to form a drain and a source; and depositing metals on the surface of the grid and the semiconductor substrate by adopting a self-alignment silicide method to form metalized silicon layers, then performing quick annealing treatment, and etching the un-reacted metals. The method can effectively reduce the transient enhanced diffusion (TED) generated in the re-oxidation process of the grid so as to remarkably prevent the short trench of the semiconductor device from generating short channel effect (SCE) and reverse short channel effect (RSCE).

The invention provides a method for preparing nearly-spherical tungsten powder, which comprises the steps of drying at a temperature of 50 to 100 DEG C, oxidation at a temperature of 450 to 520 DEG C, alkaline washing by alkaline solution of which the OH<-> concentration is 3 to 8mol/L, cleaning, drying, and the like. In the invention, the oxidation treatment is performed on tungsten powder subjected to drying process. Because the area of sharp corners and edges of projecting parts of the tungsten powder is lager than the superficial area of the tungsten powder, the activity thereof is bigger, and the oxidation rate thereof in the process of oxidation is significantly higher than that of the flat surface of the tungsten powder. After removing the sharp corners and edges of projecting parts of the tungsten powder subjected to partial preferential re-oxidation by alkaline solution, nearly-spherical particles with surfaces smoother than that of original tungsten powder particles are formed. The nearly-spherical tungsten powder prepared by using the method of the invention has the advantage of good shape distribution uniformity; and meanwhile, the method of the invention is simple in process, low in production cost, and suitable for industrial production.