41 results about "Polysilicon hydride" patented technology

Method of modifying the surface properties of a substrate by depositing a coating of hydrogenated amorphous silicon on the surface of the substrate and functionalizing the coated substrate by exposing the substrate to a binding reagent having at least one unsaturated hydrocarbon group under pressure and elevated temperature for an effective length of time. The hydrogenated amorphous silicon coating is deposited by exposing the substrate to silicon hydride gas under pressure and elevated temperature for an effective length of time.

A method of passivating the surface of a substrate to protect the surface against corrosion, the surface effects on a vacuum environment, or both. The substrate surface is placed in a treatment environment and is first dehydrated and then the environment is evacuated. A silicon hydride gas is introduced into the treatment environment, which may be heated prior to the introduction of the gas. The substrate and silicon hydride gas contained therein are heated, if the treatment environment was not already heated prior to the introduction of the gas and pressurized to decompose the gas. A layer of silicon is deposited on the substrate surface. The duration of the silicon depositing step is controlled to prevent the formation of silicon dust in the treatment environment. The substrate is then cooled and held at a cooled temperature to optimize surface conditions for subsequent depositions, and the treatment environment is purged with an inert gas to remove the silicon hydride gas. The substrate is cycled through the silicon depositing step until the surface of the substrate is covered with a layer of silicon. The treatment environment is then evacuated and the substrate cooled to room temperature.

A synthetic cork compound includes a methyl vinyl silicone polymer with a microsphere agent such as soda lime borosilicate in an amount of approximately 5 to 50 weight percent. The microsphere agent gives the compound a low density. The methyl vinyl silicone polymer preferably includes polydimethylvinylsiloxane polymer from about 45 to 90 weight percent and fumed silica from about 5 to 50 weight percent. Preferably, the compound is catalyzed using chloro-platanic acid from about 0.1 to 5 percent. Additional components of the compound include toasted oak dust from about 0.1 to 25 weight percent, ground cork from about 5 to 50 weight percent, a pigment from about 0.1 to 5 weight percent, silicon hydride from about 0.1 to 25 weight percent, and ethynyl cyclohexanol from about 0.05 to 5 weight percent.

A coating composition useful for forming a film is provided, comprising, in admixture, a resin and finely divided clay that has been surface treated with a silicon-hydride containing polysiloxane.

A removable hydrophobic composition, a removable hydrophobic coating layer and a fabrication method thereof are provided. The removable hydrophobic composition comprises 0.1-50 parts by weight of nano-particles having diameters smaller than 100 nm and of which surfaces are modified with silicon hydride compound, 0.1-5 parts by weight of an adhesion regulator or adhesion inhibitor, 100 parts by weight of a solvent, and 0.1-50 parts by weight of a polymer compound.

A TiSiN film is used as a barrier metal layer for a semiconductor device to prevent the diffusion of Cu. The TiSiN film is formed by a plasma CVD process or a thermal CVD process. TiCl₄ gas, a silicon hydride gas and NH₃ gas are used as source gases for forming the TiSiN film by the thermal CVD process. TiCl₄ gas, a silicon hydride gas, H₂ gas and N₂ gas are used as source gases for forming a TiSiN film by the plasma CVD process.

The invention discloses a method for preparing a hydrogenated silicon film by utilizing magnetron sputtering. The method comprises the following steps, pretreating a substrate and placing the substrate in a magnetron sputtering filming device; utilizing a plane Si target as a source of Si element; adjusting the power of an intermediate frequency pulse power supply to control the sputtering rate ofthe Si target; utilizing high-purity Ar gas as main ionization gas, and ensuring the effective glow discharge process; and adopting high-purity H2 gas as reaction gas, ionizing the H2, and combiningthe H2 with the Si element, forming the hydrogenated silicon film on the surface of the substrate through deposition, and annealing the film at the temperature of 550 DEG C to 950 DEG C in vacuum to obtain the nano-crystalline/non-crystalline composite structure. The invention achieves regulation and control to microstructure of the hydrogenated silicon film by changing introduction proportion ofhydrogen so as to further change the photoelectric properties of the film. The preparation method is simple and reliable, and the prepared hydrogenated silicon film is hopeful to be applied to solar batteries.

A process for making a Si—H functional siloxane oligomer from the reaction between silicon hydride compositions and cyclic siloxane oligomer in the presence of a Lewis acid is provided. The Lewis acid is operable to interact with the hydrogen of the silicon hydride to promote ring opening of the cyclic siloxane oligomer and the insertion a siloxane oligomer segment between Si and H atom to thereby form the Si—H functional siloxane oligomer.

An organic silicon film is formed by carrying out chemical vapor deposition with organic silicon compound being used as a raw material gas. The organic silicon compound contains at least silicon, hydrogen and carbon as a constituent thereof, and contains two or more groups having unsaturated bond, per a molecule thereof. The organic silicon compound is used in mixture with a silicon hydride gas.

The invention discloses a device and a method for the production of a thin-film silicon optical-to-electrical transducer. A plasma enhanced chemical vapor deposition system (PECVD) used in the invention consists of a single vacuum chamber and a plasma chamber carrying a plurality of base plates in the vacuum chamber. The preparation method of the p-i-n optical-to-electrical transducer based on hydrogenated silicon films comprises the steps as follows: a p-type, an i-type and an n-type thin-film silicon layer sequentially generated on most of the base plates in the same plasma chamber are fixedly arranged in the same vacuum chamber. In the deposition process of each film layer, the device is not required to be cleaned and no cross contamination of the i layer is caused. The steps can be repetitively processed in the same base plates to obtain a multi-junction optoelectronic device. The method for the production of thin-film the silicon optical-to-electrical transducer has incomparable advantages of low cost and high productivity.

The present invention relates to a modified crumb rubber particle having carbon to silicon bonds created by the reaction of the unsaturation in the crumb rubber particle and silicon hydride, with or without the use of a catalyst. Bound silicon content ranges from about 0.1% to 10% by weight. The silicon-modified crumb rubber can be used as is or a reinforcing filler in formulations. Typically the silicon-modified crumb rubber is used in up to 25% by weight of the total rubber present in virgin rubber compositions.

The present invention discloses technique means to produce hydrogenated Si film by hydrogen argon high dilution method in PECVD process. In the process of sensivitve sensitivity hydrogenated Si film by PECVD (plasma enhanced chemical vapor deposited method), if introducing a mount of inert gases (such as argon) and hydrogen to mixture of source gas containing silane in deposited process, the formed film has better photovoltaic capability and stability. Comparing to pure hydrogen dilution, the hydrogen and argon dilution method is more efficient, and more suitable for large area, high speed produce of solar cell based on hydrogenated Si film.

A method of hydrogenation of a silicon photovoltaic junction device is provided, the silicon photovoltaic junction device comprising p-type silicon semiconductor material and n-type silicon semiconductor material forming at least one p-n junction.

The method comprises:

• • i) ensuring that any silicon surface phosphorus diffused layers through which hydrogen must diffuse have peak doping concentrations of 1×10²⁰ atoms/cm³ or less and silicon surface boron diffused layers through which hydrogen must diffuse have peak doping concentrations of 1×10¹⁹ atoms/cm³ or less;
  • ii) Providing one or more hydrogen sources accessible by each surface of the device; and
  • iii) Heating the device, or a local region of the device to at least 40° C. while simultaneously illuminating at least some and/or advantageously all of the device with at least one light source whereby the cumulative power of all the incident photons with sufficient energy to generate electron hole pairs within the silicon (in other words photons with energy levels above the bandgap of silicon of 1.12 eV) is at least 20 mW/cm²

A one-component or single component cure system for a polysiloxane product is provided. The cure system includes a siloxane reagent that has an unsaturated organic functional group for reacting with a crosslinking reagent. The cure system also has a crosslinking reagent that has a silicon hydride group for crosslinking with the unsaturated organic group of the siloxane reagent. Either the unsaturated functional group of the siloxane reagent, the silicon hydride group of the crosslinking reagent, or both are sterically hindered. The siloxane reagent and the sterically hindered silicon hydride crosslinking reagent are mixed together in the presence of a catalyst reagent to form the one-component cure system. Methods of making the polysiloxane product are also provided.

Disclosed are low temperature curable coating compositions that include a polymer comprising functional groups reactive with anhydride groups and a crosslinking agent that includes the ungelled hydrosilylation reaction product of a silicon hydride and an unsaturated polycarboxylic acid anhydride. Also disclosed are related coated substrates and methods for coating a substrate.

Disclosed are heterogeneous platinum group metal catalysts that are catalytically active towards hydrosilylation. These catalysts include a carrier in communication with platinum group metal particles, wherein the particles are affixed to a polyelectrolyte layer. Also disclosed are polymers that are the hydrosilylation reaction product of (a) a polysiloxane containing silicon hydride and (b) an organic compound having aliphatic unsaturation in the molecule, wherein the hydrosilylation reaction is carried out in the presence of a catalytic amount of such a catalyst, a heterogeneous platinum group metal catalyst that is catalytically active towards hydrosilylation, coating compositions that include such polymers and substrates at least partially coated with such compositions.

The invention discloses a composite glass clarifying agent, which belongs to the field of the glass production. The composite glass clarifying agent is prepared from the raw materials such as acrylamide and sodium dimethyl diacrylamide sulfonate and can be slowly expanded after being heated, and can form a wrapping and supporting effect for a netted structure formed by silicate and SiO2 in a glasssystem, polymer microspheres comprise partial gas in the preparation process, in the application process, the partial gas overflows rapidly, so that the dispersity is good, and a better bubble inhibition and removal effect can be achieved; and polyether is introduced into the organic silicon, no only can the hydrophilic group but also the oleophylic group be provided, by introducing the paraffinand microcrystalline paraffin, a long-chain aliphatic compound can be introduced, the silicon tetrahydride can be rapidly hydrolyzed into orthosilicic acid and hydrogen under an alkaline condition, generation of other bubbles can be prevented, the secondary bubbles can be further prevented, and a better bubble eliminating effect can be achieved. By adopting the composite glass clarifying agent, the problem that the conventional glass clarifying agent is poor in bubble removal efficiency.

A method for preparing a thermoplastic vulcanizate, the method comprising dynamically vulcanizing a rubber within a blend that includes the rubber and a thermoplastic polymer, where said dynamically vulcanizing is effected with a cure system that includes a hydrosilating agent and a catalyst, where the hydrosilating agent includes a compound including at least 3 silicon hydride groups defined by the formula

where each R is independently a monovalent organic group or hydrogen, and where the silicon atoms of the respective silicon hydride groups are spatially separated by at least 6 atoms.

The present invention discloses a method for making the hydrogenated Si containing hydrogenated amorphous silicon and hydrogenated nanocrystalline silicon has real intrinsic capability. In process of plasma enhanced chemical vapor deposition, adding a certain gas containing boron to mixture of hydrogen and silane, making boron counteract doping effect of inevitably n-type impurity. The hydrogenated Si film gained by this method, can improve conversion efficiency and stability of p-i-n type photovoltaic device.

The invention discloses a double-layer air-guide heat insulation shield of a polysilicon hydriding furnace, which comprises an inner-layer heat insulation shield and an outer-layer heat insulation shield sleeved outside the inner-layer heat insulation shield, wherein heat insulation chassises are arranged at the bottom of the inner-layer heat insulation shield and the bottom of the outer-layer heat insulation shield, and an air-guide channel is formed between the inner-layer heat insulation shield and the outer-layer heat insulation shield; an air inlet channel is arranged at the lower part of the outer-layer heat insulation shield, and an air inlet channel is arranged at the upper part of the inner-layer heat insulation shield. In the invention, two layers of heat insulation shields are arranged, and the air-guide channel is formed between the two heat insulation shields, therefore, process tail gas can enter into a reaction region in the inner-layer heat insulation shield through the air-guide channel. The invention has the advantages: firstly, the process tail gas is poor conductor of heat and can play a better heat insulation role; secondly, the process tail gas is preheated after absorbing heat transferred from the reaction region while passing the air-guide channel, thereby improving the reaction efficiency of the process tail gas after entering into the reaction region; and thirdly, the airflow direction formed by the double-layer heat insulation shield can ensure that the device is safer and more stable.

Embodiments of the present methods may be used to produce energy in the form of an electrical current from water without the use of fossil fuel. Silicon hydride is very easy to make. This procedure in conjunction with an enzyme to produce hydrogen gas for fuel cells and other small devices. In fuel cells the production of protons may be bypassed, and an oxidant such as permanganate or oxygen from air may be used to drive the fuel cells. In such an embodiment, an intermediate reaction may not be needed to produce protons. In one embodiment, membrane-less laminar flow fuel cells with an external grid for oxygen supply from the air may be used.