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germanium from the first application of czochralski crystal patent us8058692

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Germanium Wafers: 2017

New GermaniumBased Material Could Replace Silicon for Electronic The old adage “what goes around comes around” is now being applied in electronics. Before silicon ruled the roost as the electronics material of choice, the first transistors were fashioned out of germanium.

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US Patent Application for Systems, Methods and Substrates ...

Justia Patents Including Change In A Growthinfluencing Parameter (, Composition, Temperature, Concentration, Flow Rate) During Growth (, Multilayer Or Junction Or Superlattice Growing) US Patent Application for Systems, Methods and Substrates of Monocrystalline Germanium Crystal Growth Patent Application (Application 20100116196)

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Jan Czochralski and His Method of Crystal Growth Sil ...

After invention of germaniumbased transistor in 1947, Gordon K. Teal from Bell Laboratory used the Czochralski method to obtain germanium single crystals. The first single crystal of germanium was obtained in 1948 and the results were presented at the Oak Ridge Meeting of the American Physical Society in 1950, and were reported in Teal ...

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Electrical property studies of oxygen in Czochralskigrown ...

Electically active oxygenrelated donors can be formed in Czochralski (Cz) Si either during crystal growth or during subsequent heat treatment; conventional n or ptype dopant carrier concentrations are altered if these oxygen donors are present. ... The first, at eV, was detected after prolonged anneals at 525 C and has been identified ...

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US6498288B1 Silicon germanium crystal Google Patents

US6498288B1 Silicon germanium crystal Google Patents Silicon germanium crystal Download PDF Info ... Czochralski method. C ... US09582237 19981126 19991105 Silicon germanium crystal Expired Fee Related US6498288B1 (en)

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Jan Czochralski

Jan 01, 2003· The Czochralski process is a method of crystal growth used to obtain single crystals of semiconductors ( silicon , germanium and gallium arsenide ), metals ( palladium , platinum , silver , gold ), salts and synthetic gemstones .

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US10125431B2 Method of growing germanium crystals ...

(d) controlling the diameter of a crystal of germanium drawn from said first crucible at a rate controlled by a load scale that monitors the weight of the crystal; and (f) removing the lid from the quartz shield to permit withdrawl of the germanium crystal from the melt container.

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Polycrystalline semiconductor patent application class

Class / Patent application number Description Number of patent applications / Date published; 438488000: Polycrystalline semiconductor : 68: 20110014782: Apparatus and Method for Growing a Microcrystalline Silicon Film Disclosed is a method for growing a microcrystalline silicon film on a substrate. The method includes the step of disposing ...

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(PDF) Production of germanium stable isotopes single crystals

Single crystals of germanium isotopes were grown by Czochralski method. ... monoisotopic single crystal (3). Application of the above ... the first pulsed electron spin resonance measurements of ...

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Germanium: From Its Discovery to SiGe Devices

Germanium: From Its Discovery to SiGe Devices Haller ... Abstract Germanium, element 32, was discovered in 1886 by Clemens Winkler. Its first broad application was in the form of point contact Schottky diodes for radar reception during ... LarkHorovitz’s choice of germanium as the rectifier crystal shows exceptional

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Thermal Optimization of Cz Silicon Single Crystal Growth

In an application to large diameter Czochralski (CZ) silicon (Si) single crystal growing the influence on crystal temperature field of various thermal shield assemblies located near to its surface is discussed.

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Germanium: From the first application of Czochralski ...

Germanium: From the first application of Czochralski crystal growth to large diameter dislocationfree wafers 7 Pages Materials Science in Semiconductor Processing, 2006

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High Purity Germanium, a Review on Principle Theories and ...

Since the early 1950’s the use of Germanium has been continuously growing as new applications are being developed. Its first commercial usage as the main material, from which the semiconductors were made, was later replaced by Silicon. ... Taishi, T., et al., (2010) CzochralskiGrowth of Germanium Crystals Containing High Concentrations of ...

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A brief history of ... semiconductors IOPscience

A brief history of ... semiconductors. Tudor Jenkins. Physics Education, Volume 40, Number 5. Download Article PDF. Figures. ... Bose J C 1901 Detector for electrical disturbances US Patent 755840, application filed September 1901 ... Czochralski J 1918 Measuring the velocity of crystallisation of metals Z. Phys. Chem. 92 21921 .

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Where did the first seed crystal for performing the ...

Where did the first seed crystal for performing the Czochralski process come from? ... Then you can cut a singlecrystal region from the boule and make a seed crystal from that singlecrystal region. Czochralski method has been under development for many decades and many techniques have been developed to encourage singlecrystal and low ...

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Some electrical properties of amorphous germanium, indium ...

Attempts were made to grow alloy crystals of Ga{sub 1{minus}x}In{sub x}Sb by the conventional Czochralski process. A transparent furnace was used, with hydrogen purging through the chamber during crystal growth.

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Germanium: From the first application of Czochralski ...

Germanium: From the first application of Czochralski crystal growth to large diameter dislocationfree wafers Article in Materials Science in Semiconductor Processing 9(4):437443 · August 2006 ...

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History of Telefunken Transistor History Google Sites

History of Telefunken. ... The following year, I applied for a patent on crystal diodes with electrolytic contacts, and later I sought one on crystal duodiodes for centimeterwavelength mixers. Eventually, better crystal material became available. ... Adam C 2011 The First Germanium Semiconductors: ...

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Monocrystalline silicon WikiVisually

The primary application of monocrystalline silicon is as mechanical support for integrated circuits. ... Jacobi disclosed small and cheap hearing aids as typical industrial applications of his patent, an immediate commercial use of his patent has not been reported. ... Silicon crystal being grown by Czochralski process at Raytheon, 1956. The ...

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Robert Rapp Receives 2003 Educator Award

crystal germanium and silicon would be substantially better ... Czochralski did not use a singlecrystal seed, however, and ... Teal filed for a pn junction patent in singlecrystal germanium in 1950. The first bipolar junction transistor (npn) was achieved in single crystal germanium (grown ...

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