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8157913 Method of forming a sapphire single crystal  
Various single crystals are disclosed including sapphire. The single crystals have desirable geometric properties, including a width not less than about 15 cm and the thickness is not less than...
8092594 Carbon ribbon to be covered with a thin layer made of semiconductor material and method for depositing a layer of this type  
The present invention relates to a carbon ribbon for covering in a thin layer of semiconductor material, and to a method of deposited such a layer on a substrate constituted by a carbon ribbon. At...
7976629 Crystal film fabrication  
Processes and machines for producing large area sheets or films of crystalline, polycrystalline, or amorphous material are set forth; the production of such sheets being valuable for the...
7799131 Method for the growth of semiconductor ribbons  
The present invention provides a method for the continuous production of semiconductor ribbons by growth from a linear molten zone. The creation of the molten zone is achieved by application of an...
7608146 Method and apparatus for the production of crystalline silicon substrates  
An apparatus and method for producing a crystalline ribbon continuously from a melt pool of liquid feed material, e.g. silicon. The silicon is melted and flowed into a growth tray to provide a melt...
7507291 Method and apparatus for growing multiple crystalline ribbons from a single crucible  
Methods and apparatus for concurrent growth of multiple crystalline ribbons from a single crucible employ meniscus shapers to facilitate continuous growth of discrete and substantially flat...
6908510 Material purification  
For producing ultra pure materials a first station has a porous gas distributor. A material supply supplies material to the porous gas distributor. A gas source supplies gas to the distributor and...
6673148 Method of using a magnetic field furnace to manufacture semiconductor substrates  
An apparatus and method is provided for manufacturing a semiconductor substrate such as web crystals. The apparatus includes a chamber and a growth hardware assembly housed within the chamber. A...
6669776 Magnetic field furnace and a method of using the same to manufacture semiconductor substrates  
An apparatus and method is provided for manufacturing a semiconductor substrate such as web crystals. The apparatus includes a chamber and a growth hardware assembly housed within the chamber. A...
6663710 Method for continuously pulling up crystal  
An apparatus and a method that permits a seed crystal to be directed to a precise location of a melt for growing a ribbon-shaped crystal, but after the crystal has commenced growing, the...
6626993 Method for stabilizing dendritic web crystal growth  
A process for dendritic web growth is described. The process includes providing a melt, growing a dendritic web crystal from the melt, replenishing the melt during the step of growing the dendritic...
6596075 Method of producing a crystal sheet, apparatus for use in producing the same, and solar cell  
A high-quality crystal sheet is provided. An apparatus for use in producing a crystal sheet includes a substrate having a main surface on which a crystal sheet is formed, a crucible holding a melt...
6482261 Magnetic field furnace  
An apparatus and method is provided for manufacturing a semiconductor substrate such as web crystals. The apparatus includes a chamber and a growth hardware assembly housed within the chamber. A...
6471768 Method of and apparatus for growing ribbon of crystal  
A seed crystal is lowered toward a melt, and a contact between the seed crystal and the melt is detected using an image captured by an imaging device. The temperature of the melt is adjusted to...
6143633 In-situ diffusion of dopant impurities during dendritic web growth of crystal ribbon  
A dendritic web formation process and apparatus for diffusing dopant impurities into a growing dendritic crystal web to produce photovoltaic cells. A solid dopant diffusion source is arranged in a...
5919304 Method and apparatus for producing oxide series single crystals  
When producing an oxide-series single crystal by continuously pulling downwardly by μ pulling down method, the composition of the single crystal can properly and quickly controlled to continuously ...
4834832 Process and apparatus for the manufacture of silicon rods  
A process and apparatus for the manufacture of silicon rods having a colur structure comprising monocrystalline crystal zones with a crystallographic preferred orientation. Molten silicon is...
4775443 Method and apparatus for zone regrowth of crystal ribbons from bulk material  
A method and apparatus for producing crystalline ribbons of a material from a "crucible-less" configuration of bodies of the material including possible deposition on a substrate. Means for...
4721688 Method of growing crystals  
The invention comprises an improved method of growing crystalline bodies from a melt. The method involves providing (1) a crucible for containing a melt having a plurality of first and second...
4565600 Processes for the continuous preparation of single crystals  
Processes for the continuous preparation of single crystals having a predetermined shape and requiring little or no subsequent machining which processes comprise placing a single crystal-forming...
4557793 Method and apparatus for drawing crystalline bodies from a melt  
This invention involves a method and apparatus for drawing crystalline bodies from a melt by means of an open-ended drawing nozzle which determines the cross-sectional geometry of the crystalline...
4473105 Process for cooling and solidifying continuous or semi-continuously cast material  
A process for casting a material comprising a coolant application device comprising a fluidized bed cooling system. A control system for the fluidized bed cooling system determines the most...
4469552 Process and apparatus for growing a crystal ribbon  
A process and apparatus is disclosed for growing a crystal ribbon (42) of a substance of theoretically infinite length from a melt (32) of the substance. A pair of fixedly positioned edge defining...
4468281 Silicon ribbon growth wheel and method for heat flow control therein  
A silicon ribbon growth wheel having a thermal resistance zone between an outer silicon contacting surface and an inner cooling fluid contacting surface to control rate of heat flow from the outer...
4434838 Apparatus and process for cooling and solidifying continuous or semi-continuously cast material  
An apparatus and process for casting a material comprising a coolant application device comprising a fluidized bed coolant system. The casting is carried out utilizing a casting mold which defines...
4415401 Control of atmosphere surrounding crystal growth zone  
The invention pertains to growth of silicon bodies from a melt and comprises enveloping the liquid/solid interface with a mixture of an inert gas and more than a trace amount of a carbon-containing...
4402786 Adjustable heat shield assembly  
A novel apparatus is disclosed for use in controlling in a known and predictable manner the temperature of the top surface of a capillary die and the adjacent meniscus during the growth of a...
4383130 Solar energy cell and method of manufacture  
The disclosure illustrates a ribbon like photovoltaic cell that is formed by first applying a thin layer of tungsten or other conductive, temperature resistant material on a base ribbon of high...
4371419 Method for producing a lithium tantalate single crystal  
A method for producing a lithium tantalate single crystal comprises the steps of preparing a melt consisting essentially of lithium tantalate in a platinum-rhodium crucible including (20 to 35...
4358416 Apparatus and process for cooling and solidifying molten material being electromagnetically cast  
An apparatus and process is provided for electromagnetically casting molten material into a desired shape. A containment zone is established. The containment zone has a first section for...
4334948 Method of and apparatus for growing crystal ribbon  
A method and apparatus for growing crystal ribbon from a liquid melt by the EFG technique includes the use of a die having a capillary feed passage adjacent the ribbon pulling mechanism and gas...
4330359 Electromigration process for the purification of molten silicon during crystal growth  
A process for the purification of molten materials during crystal growth by electromigration of impurities to localized dirty zones. The process has particular applications for silicon crystal...
4304623 Method for forming silicon crystalline bodies  
Method for forming an elongated silicon crystalline body using a specially designed capillary die. The method uses a higher melt meniscus in the central region of the growth front than at the edges...
4299648 Method and apparatus for drawing monocrystalline ribbon from a melt  
A method and apparatus for drawing a monocrystalline ribbon or web from a melt comprising utilizing a shaping die including at least two elements spaced one from the other each having a portion...
4271129 Heat radiation deflectors within an EFG crucible  
The thermal profile at the top of an EFG die is improved by including heat radiation deflectors within the crucible to change the level of radiation heating experienced by at least some portions of...
4269652 Method for growing crystalline materials  
Improvement in the method for growing crystalline materials by seed pulling from a melt whereby crystalline product produced is substantially free of voids and/or inclusions which were previously...
4267010 Guidance mechanism  
An improved method of growing ribbon-shaped crystalline bodies is disclosed. The method comprises the step of pulling the body from a melt pool through a very narrow gap as the body cools through a...
4248645 Method for reducing residual stresses in crystals  
A temperature profile controller is provided for cooling a crystal as it is pulled from a melt so that a substantially linear temperature gradient is established and maintained along the length of...
4137355 Ceramic coated with molten silicon  
It is desirable to coat large area, thin sheets of large-grain polycrystalline silicon on an inexpensive ceramic substrate for use in solar cell applications and the like. Such ceramic substrate as...
4125425 Method of manufacturing flat tapes of crystalline silicon from a silicon melt by drawing a seed crystal of silicon from the melt flowing down the faces of a knife shaped heated element  
A method of manufacturing bodies from meltable crystalline material in which a continuous tape of said material is manufactured by causing melted material to flow along at least one surface of a...
4121965 Method of controlling defect orientation in silicon crystal ribbon growth  
The orientation of twinning and other effects in silicon crystal ribbon growth is controlled by use of a starting seed crystal having a specific {110} crystallographic plane and <112>...
4075055 Method and apparatus for forming an elongated silicon crystalline body using a <110>{211}orientated seed crystal  
Method and apparatus for forming an elongated silicon crystalline body using a capillary action shaping technique. The means for growing and pulling the body from the capillary of the die includes...
4022652 Method of growing multiple monocrystalline layers  
A method of growing multiple monocrystalline layers from melts comprising growing a first monocrystalline layer from the first melt, and growing a second monocrystalline layer on the first...
4000030 Method for drawing a monocrystal from a melt formed about a wettable projection  
Growth of shaped crystals, such as silicon, germanium, garnet, sapphire and the like, using a crucible to contain a melt in conjunction with a wettable submerged projection extending above the...
3996094 Silicon manufacture  
A method of producing monocrystalline semiconductor material in web form which provides the steps of providing a web of polycrystalline semiconductor material having a width which is much greater...
3960511 Zone melting process  
In a zone melting process, current is passed transversely through the process charge by electrodes arranged laterally of the charge consisting of the charge material and having a height...
3954551 Method of pulling silicon ribbon through shaping guide  
A ribbon of semiconductor material is formed by supplying powdered semiconductor material at the bottom of a rectangular tube shaping guide while heating the semiconductor material in the region of...
3853489 A NON-WETTING AID FOR GROWING CRYSTALLINE BODIES  
The invention is a method and apparatus for growing crystalline bodies from the melt. Monocrystalline bodies of a material such as alumina are grown from a melt on a novel "die" assembly which...
3650703 METHOD AND APPARATUS FOR GROWING INORGANIC FILAMENTS, RIBBON FROM THE MELT  
Method of growing elongate essentially monocrystalline bodies of indefinite lengths and selected cross-sectional shapes from melts of selected high melting materials that melt congruently. Examples...
3615878 PROCESS FOR THE THERMAL TREATMENT OF A SEMICONDUCTOR MATERIAL HAVING A VOLATILE COMPONENT  
A semiconductor material having a volatile component is thermally treated in an ambient formed by a gaseous mixture which constantly maintains the stoichiometry of the semiconductor material during...
Matches 1 - 50 out of 57 1 2 >