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8172944 |
Device for producing a block of crystalline material with modulation of the thermal conductivity
The device for producing a block of crystalline material from a bath of molten material comprises a crucible having a bottom and heat extraction means arranged under the crucible. It also comprises...
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8062423 |
Crystal-growing furnace with convectional cooling structure
A crystal-growing furnace with a convectional cooling structure includes a furnace body, a heating room, and at least one heater. The heating room is accommodated in the furnace body, and includes...
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7959729 |
Method for producing group-III-element nitride single crystals and apparatus used therein
A production method is provided in which Group-III-element nitride single crystals that have a lower dislocation density and a uniform thickness and are transparent, high quality, large, and bulk...
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7959730 |
Method for processing silicon powder to obtain silicon crystals
Embodiments of the present invention relate to a process for obtaining silicon crystals from silicon. The method includes contacting silicon powder with a solvent metal to provide a mixture...
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7811383 |
Device for making monocrystalline or multicrystalline materials, in particular multicrystalline silicon
The device for production of a monocrystalline or a multicrystalline material blank, especially a silicon multicrystalline blank, using the VGF method has a crucible with a rectangular or square...
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7794539 |
Method for producing III group element nitride crystal, production apparatus for use therein, and semiconductor element produced thereby
A method for producing Group-III-element nitride crystals by which an improved growth rate is obtained and large high-quality crystals can be grown in a short time, a producing apparatus used...
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7780784 |
Molding assembly for forming ingot and a method of forming ingot
A molding assembly for forming an ingot, including side members each having engaging end portions, the engaging end portions of the side members being engaged with respective ones of the side...
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7704324 |
Apparatus for processing materials in supercritical fluids and methods thereof
An apparatus and method for processing materials in supercritical fluids is disclosed. The apparatus includes a capsule configured to contain a supercritical fluid, a high strength enclosure...
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7686888 |
Cooling system for chamber of ingot growth arrangement
Disclosed herein is a cooling system for a chamber of an ingot growth apparatus. In the present invention, guide blades (180) are provided in a base plate (100) at positions adjacent to unevenly...
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7635414 |
System for continuous growing of monocrystalline silicon
An improved system based on the Czochralski process for continuous growth of a single crystal ingot comprises a low aspect ratio, large diameter, and substantially flat crucible, including an...
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7344596 |
System and method for crystal growing
To reduce the heat input to the bottom of the crucible and to control heat extraction independently of heat input, a shield can be raised between a heating element and a crucible at a controlled...
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7220311 |
Group III nitride crystal, crystal growth process and crystal growth apparatus of group III nitride
A crystal growth method of a group III nitride includes the steps of forming a melt mixture of an alkali metal and a group III element in a reaction vessel, and growing a crystal of a group III...
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7214271 |
Silicon single crystal wafer process apparatus, silicon single crystal wafer, and manufacturing method of silicon epitaxial wafer
A silicon single crystal wafer process apparatus (10) having: a process chamber (11); a susceptor (12) which is disposed in the process chamber (11), and on an upper surface of which the silicon...
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7048799 |
Device for producing alloy crystals by cooling and controlled solidification of a liquid material
The device according to the present invention comprises a furnace (10) provided with heating means allowing said material to be crystallised to be rendered liquid, then to be cooled until it...
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7001462 |
Method for making an oriented optical fluoride crystal blank
A method of making an oriented fluoride crystal blank for transmitting below 250 nm ultraviolet light includes irradiating a fluoride crystal blank with an x-ray beam, detecting the x-ray beams...
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6942730 |
Hybrid stockbarger zone-leveling melting method for directed crystallization and growth of single crystals of lead magnesium niobate-lead titanate (PMN-PT) solid solutions and related piezocrystals
This invention provides a hybrid Stockbarger zone-leveling melting method for seeded crystallization and the manufacture of homogenous large-sized crystals of lead magnesium niobate-lead titanate...
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6896729 |
Method and apparatus for growing semiconductor crystals with a rigid support with carbon doping and resistivity control and thermal gradient control
Group III-V, II-VI and related monocrystalline compounds are grown with a rigid support of a sealed ampoule, carbon doping and resistivity control, and thermal gradient control in a crystal growth...
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6875275 |
Production apparatus for producing a crystal
A production apparatus for producing a crystal includes a crucible divided into a plurality of stages, each stage containing a crystal precursor material, and a heater arranged to heat the...
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6800137 |
Binary and ternary crystal purification and growth method and apparatus
Reactive gas is released through a crystal source material or melt to react with impurities and carry the impurities away as gaseous products or as precipitates or in light or heavy form. The...
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6673150 |
Multicompartment container for growing calcium fluoride monocrystals
The invention provides a method of making UV<200 nm transmitting optical fluoride crystals for excimer laser lithography optics and a multicompartment container for growing optical fluoride...
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6562133 |
Crucible for growing macrocrystals
A crucible having an inner surface is not wetted by a melt which shrinks when it solidifies is provided with indentations in the walls of the crucible to support an ingot grown in it. Supporting...
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6402840 |
Crystal growth employing embedded purification chamber
Crystal grower and purification stations immersed within crystal growing furnaces have preparation chambers with circular, elliptical, rectangular or polygonal cross-sections. A lateral heater and...
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6344085 |
Device and method for producing at least one SiC single crystal
A device for producing a silicon carbide (SiC) single crystal contains a crucible having a storage region for holding a stock of solid SiC and having a crystal region for holding a SiC seed...
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6334899 |
Continuous crystal plate growth apparatus
Reactive gas is released through a crystal source material or melt to react with impurities and carry the impurities away as gaseous products or as precipitates or in light or heavy form. The...
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6120602 |
Method and apparatus for fabricating near spherical semiconductor single crystal particulate and the spherical product produced
An apparatus and a method for producing single crystal semiconductor particulate in near spherical shape and the particulate product so formed is accomplished by producing uniform, monosized, near...
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6114052 |
Ingot plate made of thermoelectric material, rectangular bar cut from the ingot plate, and process of fabricating the ingot plate
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5932005 |
Crystallogenesis device and process
The material of the crystal (2) formed by solidification is deposited in a crucible (1), whose wall is perforated by two ducts for the injection of pressure at different heights (6, 7). A...
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5900060 |
Pressurized skull crucible apparatus for crystal growth and related system and methods
The invention is directed to an apparatus, system and methods for growing high-purity crystals of substances that are peritectic at atmospheric pressure. The apparatus includes a pressure vessel...
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5863326 |
Pressurized skull crucible for crystal growth using the Czochralski technique
The invention is directed to an apparatus, system and methods for growing high-purity crystals of substances that are peritectic at atmospheric pressure using the Czochralski technique. The...
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5769944 |
Vertical gradient freeze and vertical Bridgman compound semiconductor crystal growth apparatus capable of applying axial magnetic field
An improved vertical gradient freeze and vertical Bridgman compound semiconductor crystal growth apparatus capable of applying an axial magnetic field of about 1600G in the crystal growth axis...
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5656079 |
Statement of government interest
The present invention is an apparatus for the synthesis and growth of single crystals of phosphorus compounds starting with the elemental materials in a single furnace without external exposure....
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5643857 |
Method of melting ceramic superconductive material
A ceramic superconductive material (1) including a compound containing oxygen and at least two types of metal elements and having layer structure is molten in a vessel (2), at least an inner...
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5529015 |
Ampoule failure system
An ampoule failure system for use in material processing furnaces comprising a containment cartridge and an ampoule failure sensor. The containment cartridge contains an ampoule of toxic material...
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5438953 |
Crystal growth apparatus
A crystal growth apparatus is herein disclosed, which comprises a vertical magnetic field-generating apparatus for establishing a cylindrical, vertical magnetic field space; a vertical Bridgman...
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5400742 |
Method of manufacturing compound semiconductor and apparatus
A method of manufacturing a semiconductor boule, the method comprises providing a chamber having a crucible, introducing a material for forming the boule and a liquid encapsulant having a softening...
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5312506 |
Method for growing single crystals from melt
There is here provided a method for growing single crystals from a melt which comprises the steps of preparing a double structure crucible constituted of an inner tube and an outer tube; placing a...
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5248377 |
Crystal-growth furnace for interface curvature control
In a Bridgman-type apparatus for growing single crystals, a pair of different gradient sections is located around the respective liquid and solid phases of a sample undergoing solidification. Each...
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5205997 |
Ampoule for crystal growth
An ampoule contains an ingot of non-monocrystalline material. A seed of the same material but monocrystalline in nature is embedded within the ingot. A spring biases a piston to retain the seed and...
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5169486 |
Crystal growth apparatus and process
A circular crucible for use in VGF and VB methods of crystal growth includes: a seed well, a first transition region, a first stable growth region, a second transition region, and a major growth...
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5167759 |
Production process of single crystals
A single crystal is produced from the melt of a starting material by solidification. The process makes use of a triple-walled crucible compound of an outer cylinder made of a material selected from...
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5158750 |
Boron nitride crucible
A boron nitride crucible having a closed end, an open end, an internal surface and an external surface, and wherein at least a portion of the external surface, preferably proximate the open end of...
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5135047 |
Furnace for high quality and superconducting bulk crystal growths
The manufacturing of high temperature superconducting crystals and high quality crystals in general requires a furnace design with very precise process control to minimize the crystal defects. A...
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5135726 |
Vertical gradient freezing apparatus for compound semiconductor single crystal growth
A vertical gradient freeze single crystal growing apparatus utilizing a direct monitoring furnace which is possible to obtain rapid high temperature heating and uniform temperature distribution by...
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5134261 |
Apparatus and method for controlling gradients in radio frequency heating
A composite susceptor for a radio frequency (RF) heated crystal growing furnace has a plurality of stacked electrically insulating and electrically conducting elements about the crucible area so...
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5130105 |
Protein crystal growth tray assembly
A protein crystal growth tray assembly includes a tray that has a plurality of individual crystal growth chambers. Each chamber has a movable pedestal which carries a protein crystal growth...
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5116456 |
Apparatus and method for growth of large single crystals in plate/slab form
Apparatus and method for controlled growth of large single crystals in plate/slab form from a melt, characterized by a crucible having a narrow thickness dimension that is small enough to permit...
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5064497 |
Crystal growth method and apparatus
In a compound semiconductor crystal growth process, the crucible (11) that contains the semiconductor melt is contacted on its opposite surface by a material (26) which, when melted, reacts with...
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5057287 |
Liquid encapsulated zone melting crystal growth method and apparatus
A method and apparatus for growing an extended length single crystal of a Group III-V or II-VI material such as GaAs by moving a crucible containing a seed crystal and precompounded crystal...
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5047113 |
Method for directional solidification of single crystals
The invention provides a method for growth of single crystals from the melt by directional solidification in vertical bottom seeded crucibles. The crucible confining the melt is insulated radially...
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5037621 |
System for the in-situ visualization of a solid liquid interface during crystal growth
A system for visualizing the solid-liquid interface of a growing crystal in-situ using a modified vertical Bridgman crystal growth method. An infrared source emits radiation which passes through a...
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