Matches 101 - 150 out of 151 < 1 2 3 4 >
Match Document Document Title
6113687 Method for making a silicon single crystal wafer  
A silicon single crystal wafer having good device characteristics can be manufactured according to the Czochralski method without formation of any dislocation cluster within a crystal surface....
6080237 Method for production of dislocation-free silicon single crystal  
This invention is directed to a method for the production of a dislocation-free silicon single crystal by the Czochralski method. This method attains growth of the main body part of the...
6059875 Method of effecting nitrogen doping in Czochralski grown silicon crystal  
A method of introducing nitrogen into a melt for use in producing a nitrogen-doped silicon single crystal by the Czochralski method includes adding a silicon material to a vessel, such as a quartz...
6059876 Method and apparatus for growing crystals  
the present invention provides an improved method and apparatus for doping silicon and other crystals made by the Czochralski process wherein the surface of the melt is partially enclosed or...
6019838 Crystal growing apparatus with melt-doping facility  
A crystal growing apparatus is able to provide dopant to a melt in the apparatus. A hopper is carrying dopant is integrated into a pull shaft of the apparatus so that dopant can be added to the...
6013129 Production of heavily-doped silicon  
Provided is a method for the production of a heavily-doped silicon wherein an element X whose ionic radius is larger than Si and an element Y whose ionic radius is smaller than Si are added to a Si...
5985022 Optoelectric articles and a process for producing the same  
Optoelectric article includes a substrate made of an optoelectric single crystal and a film of a single crystal of lithium niobate formed on the substrate by a liquid phase epitaxial process,...
5986288 Epitaxial wafer for a light-emitting diode and a light-emitting diode  
An epitaxial wafer for a light-emitting diode includes an n-type GaP single-crystal substrate, and at least an n-type semiconductor epitaxial layer and a p-type semiconductor epitaxial layer formed...
5976245 Czochralski crystal growing system  
A Czochralski crystal growing system includes components for adding dopants to semiconductor materials and for growing single crystals. The components comprise a portion formed of a material that...
5904767 Neutron transmutation doping of silicon single crystals  
A working recipe for NTD CZ and MCZ silicon wafer production is provided. It teaches that a neutron-enhanced S-curve can be constructed by noting that a silicon interstitial (Si I ), emitted due to...
5840115 Single crystal growth method  
A method of growing a single crystal of semiconductor using a CZ growth technique, having a step (0<t<t1) wherein a single crystal of semiconductor is pulled while a source material is...
5728213 Method of growing a rare earth silicate single crystal  
A method of growing a rare earth silicate single crystal from a melt of a starting material containing a rare earth oxide and a silicon oxide, wherein the starting material in which a density of Fe...
5728212 Method of preparing compound semiconductor crystal  
A compound semiconductor crystal has a reduced dislocation density. The compound semiconductor crystal doped with an impurity satisfies the following relations, wherein c.c. represents its carrier...
5707879 Neutron detector based on semiconductor materials  
A neutron radiation detector is described. A semiconductor material is populated with helium three ( 3 He) atoms to increase its overall neutron capture efficiency. Upon capture of a neutron by a ...
5704974 Growth of silicon crystal from melt having extraordinary eddy flows on its surface  
When a Si single crystal 8 is pulled up from a melt 6 received in a crucible 2, the state of eddy flows generated in the melt 6 is judged from the temperature distribution of the melt at the...
5700320 Growth of silicon single crystal having uniform impurity distribution along lengthwise or radial direction  
When a B or P-doped Si single crystal is pulled up from a B or P-doped melt by the Czochralski method, an element such as Ga, Sb or In having the effect to reduce the heat expansion coefficient of...
5700321 Method of feeding a dopant in a continuously charging method  
The object of the present invention affords a method of feeding dopant and a dopant composition used therein for easily preparing single crystals having a desired doping concentration during...
5660627 Method of growing lutetium oxyorthosilicate crystals  
A method for producing lutetium oxyorthosilicate crystals includes maintaining the interface between a crystal and the melt from which it is pulled substantially flat as the crystal is grown. In a...
5609682 Method for the preparation of silicon single crystal  
An improved method is proposed for the preparation of a semiconductor silicon single crystal of N-type by the Czochralski process, which is free from the problem of occurrence of delayed OSFs as...
5492078 Process for the controlled feeding of a melting crucible with particles during the drawing of crystals by the czochralski method  
In a process and a device for the controlled feeding of a melting crucible (13) with doped particles (2, 2a) during the drawing of a crystal (16) by the Czochralski method by the control of a flow...
5462011 Method for pulling single crystals  
A method and apparatus for pulling single crystals from a melt of semicontor material, in which a monocrystalline seed crystal grows to form a single crystal, the seed crystal being dipped into the...
5423283 Method for growing antimony-doped silicon single crystal  
A method for growing an antimony-doped silicon single crystal having an oxygen concentration of 12 ppma or more is employed wherein the pressure of an atmospheric inert gas within the furnace is...
5408951 Method for growing silicon crystal  
In an improved Czochralski process for growing silicon crystals, wherein a single-crystal silicon seed is pulled from a molten silicon source to grow the crystal therefrom, a pre-oxidized arsenic...
5406905 Cast dopant for crystal growing  
A dopant (76), such as antimony, is cast around a seed crystal (10) to form a seed-dopant assembly (14) that facilitates doping of a molten semiconductor (36), such as silicon, in a crystal-growing...
5402747 Method of growing crystal  
A single crystal material is filled in a crucible, and the whole of the single crystal material is melted to contain doping impurities. A solid layer coagulated upward from the bottom of the...
5394828 Apparatus for the solidification of a doped electricity conducting material and the continuous checking of its dopant content  
An apparatus for use in solidification of a doped electrically conducting material and for use in monitoring said solidification is provided. The apparatus includes a first forming means for...
5174853 Forsterite single crystal and method for the manufacture of the same  
In a method for manufacturing forsterite single crystals containing tetravalent chromium as luminescent ions, the method which comprises the use of chromium dioxide or comprises the use of a...
5171400 Method of producing crystalline rods having regions of reversed dominant ferroelectric polarity and method for clarifying such a rod  
A method of growing a single crystal rod with regions of reversed dominant ferroelectric polarities (poling the same) is described. It is a variation of laser-heated pedestal growth. The...
5164041 Method of growing rare earth doped orthosilicates(LN2-XREXSIO5)  
The invention is a technique for the growth of single crystals of rare earth doped rare-earth orthosilicate crystals which may be used as the laser medium in solid-state non-semiconductor lasers....
5160401 Method of growing mixed crystals from melts of oxidic multicomponent systems  
A method of growing mixed crystals having two lattice sites, each of which having a different number of adjoining oxygen ions, from melts of oxidic multicomponent systems, homogeneous mixed...
5034200 Crystal pulling apparatus and crystal pulling method  
A crystal pulling apparatus of double structure crucible has a crucible body which is divided into inner and outer chambers by a cylindrical partition wall coaxially disposed in the crucible body....
4970060 Pure or mixed monocrystalline boules of lanthanum orthogallate  
Monocrystalline lanthanum orthogallate compositions grown along a predetermined crystallographic direction in the form of a single crystal of a size greater than 1 cm in diameter/width and at least...
4631234 Germanium hardened silicon substrate  
Disclosed is a substitutionally strengthened silicon semiconductor material. A high concentration of germanium atoms is added to a silicon melt to thereby substitutionally displace various silicon...
4591409 Control of nitrogen and/or oxygen in silicon via nitride oxide pressure during crystal growth  
The disclosure relates to a method for producing single crystal silicon from a polycrystalline silicon melt wherein dopants such as oxygen and nitrogen are uniformly distributed in the crystal both...
4483734 Method for the preparation of single crystals of gadolinium gallium garnet  
In the crystal growing of GGG (gadolinium gallium garnet) by the Czochralski technique from a melt of the oxide mixture of gadolinium and gallium, zinc is added to the oxide melt as a dopant...
4302280 Growing gadolinium gallium garnet with calcium ions  
Monocrystalline gadolinium gallium garnet is prepared by the Czochralski growth process from a melt composed of the oxides of gadolinium and gallium. In order for this process to produce uniform...
4224099 Method for producing R-plane single crystal alpha alumina  
Method for producing massive unicrystalline R-plane alpha alumina of circular cross-section from an alumina melt containing additions of chromium, iron or magnesium oxides.
4199396 Method for producing single crystal gadolinium gallium garnet  
Method for producing virtually perfect massive unicrystalline gadolinium gallium garnet from a melt of gadolinium and gallium oxides containing an addition of calcium, magnesium or strontium ions.
4060401 Method for making aligned fibrous crystals  
The invention relates to siliceous materials in the form of elements of aligned elongated individual crystals and more particularly to methods of forming such elements, said methods comprising...
4040890 Neodymium oxide doped yttrium aluminum garnet optical fiber  
There is disclosed a technique for growing, from a melt, doped single-crystal fibers for use as lasers or other active or passive optical devices of a size that is compatible with proposed optical...
3883313 MODIFIED CZOCHRALSKI-GROWN MAGNESIUM ALUMINATE SPINEL AND METHOD OF MAKING SAME  
A modified, Czochralski-grown, single-crystalline spinel has a nominal composition (MgO)(Al 2 O 3 ) x , where x can be between 1 and 2.3. The spinel has an (OH) ion content in its lattice that is...
3837911 MAGNETIC DEVICES UTILIZING GARNET EPITAXIAL MATERIALS AND METHOD OF PRODUCTION  
Magnetic garnet compositions grown by liquid phase epitaxy have appropriate magnetic properties for use in bubble domain devices - a class of magnetic devices in which information is represented by...
3655415 ASTERIATED SYNTHETIC CORUNDUM GEM STONES AND METHOD AND APPARATUS FOR THEIR PRODUCTION  
Asteriated synthetic corundum gem stones are provided which have their asteriating compounds as well as coloring compounds uniformly distributed throughout the body and which are free of the heavy...
3607752 PROCESS FOR THE CULTURE OF LARGE MONOCRYSTALS OF LITHIUM NIOBATE  
The present invention relates to a process for cultivating larger unstressed single-domain crystals containing niobium and an alkali metal, preferably lithium. The process is conducted by the...
3346344 Growth of lithium niobate crystals  
3257327 Process for growing neodymium doped single crystal divalent metal ion tungstates  
3053635 Method of growing silicon carbide crystals  
2892739 Crystal growing procedure  
2822308 Semiconductor p-n junction units and method of making the same  
3761295 Title is not available  
Matches 101 - 150 out of 151 < 1 2 3 4 >