42 results about "Germanium chloride" patented technology

A germanium etching method comprises the steps that a semiconductor substrate is provided; a germanium layer is formed on the semiconductor substrate; part of the germanium layer is removed through a dry etching process, and gas in dry etching contains chlorine; after dry etching is performed, the etched germanium layer is washed with cleaning gas in situ, and the cleaning gas is oxygen. The germanium etching method can remove germanium chloride polymer adhering to the surface of photoresist in the etching process, the appearance of the etched germanium layer is improved, and the yield of formed semiconductor devices is improved.

The invention relates to a method used for preparing compounds or high-purity compounds having a general formula of R(4-m-n)AClmHn, and an apparatus suitable for implementing the method, and especially relates to an apparatus for preparing silane having a general formula of HnSiCl4-n through disproportionating highly-chlorinated silane in the presence of a catalyst, and a method thereof, wherein A is Si, Ge, Ti or Sn; n is 1, 2, 3 or 4; and the apparatus used for the method is an assembly composed of at least one distillation tower and at least one bypass reactor which is an external reactor. The invention also relates to a catalyst comprising alkylaminotrialkoxy silane having a general formula of (CxH2x+1O)3Si(CH2)zN(CyH2y+1)2, and a method for preparing trichlorosilane (HSiCl3) through catalytic hydrogenation dehalogenation of tetrachlorosilicane (SiCl4) in the presence of hydrogen. The invention further relates to a method for preparing alkylhydrochlorosilane having a general formula of Ia(R(4-m-n)SiClmHn), wherein m is 1 or 2, n is 1 or 2, the m+n value is not equal to 3, and R represents a C1-5 alkyl group. The invention discloses a method for processing silicon tetrachloride, germanium tetrachloride, titanium tetrachloride or tin tetrachloride containing at least one hydrogen-containing compound which cannot be separated through distillation, and an apparatus thereof. The invention also discloses a continuous method for preparing high-purity silicon tetrachloride, germanium tetrachloride, titanium tetrachloride or tin tetrachloride, and an apparatus and a reactor thereof.

The invention discloses a method for green production of germanium tetrachloride from germanium mud, and relates to the technical field of chemical production. The method comprises the following steps: S1, pretreating germanium mud; S2, slurrying and heating the germanium mud; S3, dropwise adding a 35% hydrogen peroxide solution for oxidation; S4, conducting filter pressing and drying; and S5, adding hydrochloric acid for distillation. Germanium tetrachloride is produced by adopting a hydrogen peroxide oxidation and hydrochloric acid chlorination distillation method, a hydrogen peroxide solution is used as an oxidizing agent in the process, distillation raffinate does not contain solid waste residues, a production pipeline is not blocked, the production process is assisted by ultrasonic oscillation and microwave heating, and the reaction process is completed in an oxidation kettle and a distillation kettle. The direct recovery rate of germanium tetrachloride produced from germanium mudis increased through accurate control, and the problems that a large amount of acid-containing ferrous chloride waste residues are easily generated in an existing ferric trichloride oxidation and hydrochloric acid chlorination distillation process, a large amount of crystals are separated out to block a pipeline after distillation raffinate is cooled, and the direct recovery rate is not high aresolved.

The invention provides a polycrystalline silicon material and a preparation method thereof. According to the technical scheme, the components of polycrystalline silicon are compounded based on the metal ion doping principle, a trace amount of CoCl2, Ag2CrO4, BaCl2O8 and other components are introduced, TiC and GaAs are adopted for protecting the crystal structure, and meanwhile the formula proportion is optimized. On the basis, the invention provides a preparation method of the polycrystalline silicon material, the method is based on an improved Siemens method, and germanium tetrachloride, Bi(NO3)3 and BaCl2O8 are added in the process of preparing SiHCl3 to obtain doped trichlorosilane; then condensation and impurity removal are carried out, and CoCl2, Ag2CrO4 and magnesium trisilicate arefurther doped; in the reduction process, TiC, GaAs and trichlorosilane are vaporized together and then fed into a reduction furnace, metal ions are embedded into crystal lattices along with growth ofcrystals, and then the polycrystalline silicon material is obtained. The photoelectric conversion efficiency of the polycrystalline silicon material can reach about 28% and the service life is obviously prolonged, so that the polycrystalline silicon material has outstanding technical advantages.

The present invention is the process of utilizing metal hydride to reduce germanium chloride to prepare near monodisperse nanometer germanium crystal under supersonic reaction condition. The present invention has high energy supersonic water bath to replace high temperature reaction environment to promote the formation of nanometer crystal and the dispersion in the solution, and adopts strongly reductive metal hydride as reductant for preparing near monodisperse nanometer germanium crystal under room temperature condition. Through experiments, the nanometer germanium crystal preparing conditions are optimized. Preparing monodisperse nanometer germanium crystal is significant in research of the relationship between the performance and the size of nanometer material and is valuable in the design and manufacture of semiconductor devices.

The invention provides a recovery system and method for germanium-containing liquid in high-purity germanium dioxide production and relates to the technical field of germanium-containing liquid recovery. The recovery system comprises a germanium tetrachloride hydrolyzed liquid storage tank, a tail gas absorption liquid storage tank, a water tank, a liquid mixing tank, a reaction tank, a sedimentation tank and a filter press. The germanium tetrachloride post-hydrolysis liquid storage tank, the tail gas absorption liquid storage tank and the water tank are respectively communicated with the liquid mixing tank, the liquid mixing tank, the reaction tank, the sedimentation tank and the filter press are sequentially communicated to be used for treating an aqueous solution step by step, in the whole production process, only the pH needs to be tested at intervals, the system can be used after the requirement is met, the repeated adjustment of the pH value is avoided, the mixing volume of all liquid does not need to be accurate, and the effect can be achieved within a rough range.

The invention discloses a tubular small heating component which comprises a tubular pipe fitting, the outer wall of the pipe fitting is coated with a coating, and electrode layers are arranged outsidethe coating and located at the two ends of the pipe fitting. A base material of the pipe fitting is an insulating quartz material resistant to high temperature and low temperature; and the coating isan environment-friendly nano far-infrared heating material coating. The tin tetrachloride, the tin oxide, the antimony trichloride, the titanium tetrachloride, the copper sulfate pentahydrate and thegermanium chloride are matched, energy band matching is generated among molecules of all the components, interactive transition and mutual promotion are generated among electrons on the outermost layer of metal elements, the conversion efficiency of electric energy and heat energy is improved, energy consumption is reduced, and a good heating effect is achieved; and secondly, after the far infrared heating component is electrified, the nano micromolecules are subjected to resonance friction to generate Brownian motion, and the functional film layer of the far infrared heating body is matchedwith the conductive film layer for use, so that the conversion efficiency of electric energy and heat energy is higher, the energy utilization rate is improved, the energy consumption is reduced, anda better heating effect is achieved.

The invention discloses a preparation process of a 68Ge line source used for PET attenuation correction, which aims to provide a preparation process of a 68Ge line source which has high utilization rate, uniform activity distribution and low cost and is used for PET attenuation correction. The process comprises the following steps: (1) putting a ceramic microsphere into a mixed solution of nitricacid and germanium chloride [68Ge], carrying out an oscillating reaction, taking out after the 68Ge is absorbed on the ceramic microsphere, washing and then airing; and (2) evenly filling the dried ceramic microsphere adsorbed with the 68Ge into a stainless steel tube one end of which is sealed, sealing the other end of the stainless steel tube by using glass wool, then sleeving the stainless steel tube into a stainless steel sleeve and finally, connecting the stainless steel sleeve with a magnetic tungsten steel base, wherein the concentration of the nitric acid in the mixed solution in the step (1) is 12 to 15mol / L, the concentration of Ge ions is not greater than 5mg / ml, and the adsorption time is 10 to 20min.

The invention discloses a composite refraction ink glass panel used for a vehicle front windscreen and a manufacturing method of the composite refraction ink glass panel. Glass body constituents of the panel are composed of silicon dioxide and potassium oxide. A high refraction layer composed of silicon tetrafluoride, cerium oxide and germanium tetrachloride is fixed to the convex face of a glassbody, and a low refraction layer composed of silicon tetrafluoride, zirconium oxide, titanium oxide and boron oxide is fixed to the concave face. An ink screen is cured inside, and the basic structureof the ink screen comprises a high-transmittance ITO film and a balanced ITO film which are cured through indium oxide and stannic oxide according to different mass ratios, transparent oily liquid containing white particles with charges and transparent particle microcapsules with opposite charges suspends between the two films, the ink screen is provided with two electrostatic systems, one electrostatic system comprises transparent front and rear electrostatic substrates composed of the two ITO films, and the other electrostatic system comprises left and right electrostatic substrates composed of metal bars on the two sides. The composite refraction ink glass panel refracts part of external light and is good in inward vision light transmission, adjustable in transparency and wide in application range.

The invention discloses a method for leaching out germanium from germanium chlorination distilled calcium slag and relates to the technical field of wet metallurgy. According to the method, at first,the germanium chlorination distilled calcium slag and sodium carbonate are mixed and then roasted at certain temperature, calcium sulfate, silicon dioxide and silicon germinate in the germanium chlorination distilled calcium slag are converted into calcium carbonate, sodium silicate and sodium germinate correspondingly; wrapping of calcium sulfate and silicon dioxide to germanium is opened, and follow-up leaching out of germanium is benefitted; secondly, water is adopted for leaching out a roasted product, sodium sulfate, sodium silicate and sodium germinate enter a water solution, and the situation that silica gel is formed in the follow-up sulfuric acid leaching out process is avoided; and finally, under the condition of low sulfuric acid concentration, efficient leaching out of germanium is achieved, efficient recovery of valuable resources can be achieved, meanwhile, consumption of sulfuric acid is reduced, and generation of silica gel in the leaching out process is avoided.

The invention discloses an annular nano germanium dioxide / polyion liquid composite material and a preparation method and application thereof. The composite material is annular germanium dioxide nanoparticles dispersed in polyion liquid. In the composite material, germanium dioxide is uniformly distributed in the polyion liquid. According to the invention, an annular nano germanium dioxide composite material dispersed in a polyionic liquid carrier is prepared through a free radical initiated polymerization method by taking vinyl functionalized imidazolium ionic liquid, germanium tetrachloride,divinylbenzene and azodiisobutyronitrile as raw materials and absolute ethyl alcohol as a solvent. As a lithium ion battery negative electrode material, the annular nano germanium dioxide / polyion liquid composite material has first reversible capacity of 1711mAh / g under the current density of 200mA / g, has a capacity retention ratio of 40-55% after 100 cycles, and shows high charge-discharge capacity and good cycle performance.

The invention belongs to the field of fuel batteries and provides a doped germanic acid lanthanide series apatite structured electrolyte membrane for a fuel battery. The membrane is prepared by uniformly mixing lanthanum nitrate, germanium chloride and a metal oxide with ethanol, adding aids such as citric acid, ethylene glycol and ammonium nitrate, performing low-temperature stirring drying so asto obtain a cementing material, uniformly coating a substrate with the cementing material, performing low-temperature presintering on aids such as LiCl, performing high-temperature sintering for 4 hours, annealing for 6-8 hours, cooling, and peeling off the substrate, thereby obtaining a uniform and dense self-supported ceramic membrane. The metal oxide is an oxide of a forth subgroup such as Cr,Mo and W, and the substrate material is an inorganic material with relatively low thermal expansion coefficients such as silicon oxide and subgroup. By adding a gap transmission channel of oxygen ions, the oxygen ion mobility of an zirconium oxide ceramic electrolyte membrane can be improved.