Introduction Of Conductivity Modifying Dopant Into Semiconductive Material Patents (Class 438/510)
  • Publication number: 20120080086
    Abstract: A transparent electrode on at least one surface of a transparent substrate may include graphene doped with a p-dopant. The transparent electrode may be efficiently applied to a variety of display devices or solar cells.
    Type: Application
    Filed: October 5, 2011
    Publication date: April 5, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seon-mi Yoon, Won-mook Choi, Hyeon-jin Shin, Jae-young Choi
  • Patent number: 8143134
    Abstract: The present invention provides a method for manufacturing an SOI substrate, to improve planarity of a surface of a single crystal semiconductor layer after separation by favorably separating a single crystal semiconductor substrate even in the case where a non-mass-separation type ion irradiation method is used, and to improve planarity of a surface of a single crystal semiconductor layer after separation as well as to improve throughput.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: March 27, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takeshi Shichi, Junichi Koezuka, Hideto Ohnuma, Shunpei Yamazaki
  • Publication number: 20120068265
    Abstract: This wiring layer structure includes: an underlying substrate of a semiconductor substrate or a glass substrate; an oxygen-containing Cu layer or an oxygen-containing Cu alloy layer which is formed on the underlying substrate; an oxide layer containing at least one of Al, Zr, and Ti which is formed on the oxygen-containing Cu layer or the oxygen-containing Cu alloy layer; and a Cu alloy layer containing at least one of Al, Zr, and Ti which is formed on the oxide layer.
    Type: Application
    Filed: May 11, 2010
    Publication date: March 22, 2012
    Applicants: ULVAC, INC., MITSUBISHI MATERIALS CORPORATION
    Inventors: Kazunari Maki, Kenichi Yaguchi, Yosuke Nakasato
  • Patent number: 8138070
    Abstract: A method of forming a multi-doped junction is disclosed. The method includes providing a first substrate and a second substrate. The method also includes depositing a first ink on a first surface of each of the first substrate and the second substrate, the first ink containing a first set of nanoparticles and a first set of solvents, the first set of nanoparticles containing a first concentration of a first dopant. The method further includes depositing a second ink on a second surface of each of the first substrate and the second substrate, the second ink containing a second set of nanoparticles and a second set of solvents, the second set of nanoparticles containing a second concentration of a second dopant. The method also includes placing the first substrate and the second substrate in a back to back configuration; and heating the first substrate and the second substrate in a first drive-in ambient to a first temperature and for a first time period.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: March 20, 2012
    Assignee: Innovalight, Inc.
    Inventors: Maxim Kelman, Michael Burrows, Dmitry Poplavskyy, Giuseppe Scardera, Daniel Kray, Elena Rogojina
  • Patent number: 8138568
    Abstract: Disclosed is a transparent carbon nanotube (CNT) electrode using a conductive dispersant° The transparent CNT electrode comprises a transparent substrate and a CNT thin film formed on a surface the transparent substrate wherein the CNT thin film is formed of a CNT composition comprising CNTs and a doped dispersant. Further disclosed is a method for producing the transparent CNT electrode. The transparent CNT electrode exhibits excellent conductive properties, can be produced in an economical and simple manner by a room temperature wet process, and can be applied to flexible displays. The transparent CNT electrode can be used to fabricate a variety of devices, including image sensors, solar cells, liquid crystal displays, organic electroluminescence (EL) displays and touch screen panels, that are required to have both light transmission properties and conductive properties.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: March 20, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seon Mi Yoon, Jae Young Choi, Dong Kee Yi, Seong Jae Choi, Hyeon Jin Shin
  • Patent number: 8133785
    Abstract: Provided is a method of manufacturing a semiconductor device, that buried gate electrodes are formed in a pair of trenches in a substrate, so as to be recessed from the level of the top end of the trenches, a base region is formed between a predetermined region located between the pair of trenches, and a source region is formed over the base region.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: March 13, 2012
    Assignee: Renesas Electronics Corporation
    Inventor: Atsushi Kaneko
  • Patent number: 8124506
    Abstract: A method of using helium to create ultra shallow junctions is disclosed. A pre-implantation amorphization using helium has significant advantages. For example, it has been shown that dopants will penetrate the substrate only to the amorphous-crystalline interface, and no further. Therefore, by properly determining the implant energy of helium, it is possible to exactly determine the junction depth. Increased doses of dopant simply reduce the substrate resistance with no effect on junction depth. Furthermore, the lateral straggle of helium is related to the implant energy and the dose rate of the helium PAI, therefore lateral diffusion can also be determined based on the implant energy and dose rate of the helium PAI. Thus, dopant may be precisely implanted beneath a sidewall spacer, or other obstruction.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: February 28, 2012
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Christopher R. Hatem, Ludovic Godet
  • Patent number: 8124512
    Abstract: A semiconductor device includes a first conductive structure and a second conductive structure. The first conductive structure is formed in a first region of a substrate, and includes a first polysilicon layer pattern, a first conductive layer pattern having a resistance smaller than that of the first polysilicon layer pattern, and a first hard mask. The second conductive structure is formed in a second region of the substrate and has a thickness substantially the same as that of the first conductive structure. The second conductive structure includes a second polysilicon layer pattern, a second conductive layer pattern having a resistance smaller than that of the second polysilicon layer pattern and having a thickness different from that of the first conductive layer pattern, and a second hard mask.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: February 28, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Dae-Joong Won
  • Patent number: 8124533
    Abstract: A mask layer having a plurality of openings is formed on the first layer. A second layer having a second conductivity type different from the first conductivity type is formed on the first layer by introducing impurities using the mask layer. A third layer having the first conductivity type is formed on the second layer by introducing impurities using the mask layer. A trench extending through the second layer and the third layer to the first layer is formed by carrying out etching using an etching mask including at least the mask layer. A gate insulation film covering a sidewall of the trench is formed. A trench gate filling the trench is formed on the gate insulation film.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: February 28, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventor: Atsushi Narazaki
  • Patent number: 8124467
    Abstract: In sophisticated P-channel transistors, a high germanium concentration may be used in a silicon/germanium alloy, wherein an additional semiconductor cap layer may provide enhanced process conditions during the formation of a metal silicide. For example, a silicon layer may be formed on the silicon/germanium alloy, possibly including a further strain-inducing atomic species other than germanium, in order to provide a high strain component while also providing superior conditions during the silicidation process.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: February 28, 2012
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Stephan Kronholz, Vassilios Papageorgiou, Maciej Wiatr
  • Publication number: 20120045887
    Abstract: Semiconductor materials suitable for being used in radiation detectors are disclosed. A particular example of the semiconductor materials includes tellurium, cadmium, and zinc. Tellurium is in molar excess of cadmium and zinc. The example also includes aluminum having a concentration of about 10 to about 20,000 atomic parts per billion and erbium having a concentration of at least 10,000 atomic parts per billion.
    Type: Application
    Filed: November 1, 2011
    Publication date: February 23, 2012
    Applicant: WASHINGTON STATE UNIVERSITY RESEARCH FOUNDATION
    Inventors: Kelvin Lynn, Kelly Jones, Guido Ciampi
  • Publication number: 20120043540
    Abstract: The present invention provides a semiconductor device capable of suppressing a contact failure due to an increase in contact resistance, a production method of the semiconductor device, and a display device.
    Type: Application
    Filed: October 30, 2009
    Publication date: February 23, 2012
    Inventor: Tomohiro Kimura
  • Patent number: 8114785
    Abstract: Electrical structures and devices may be formed and include an organic passivating layer that is chemically bonded to a silicon-containing semiconductor material to improve the electrical properties of electrical devices. In different embodiments, the organic passivating layer may remain within finished devices to reduce dangling bonds, improve carrier lifetimes, decrease surface recombination velocities, increase electronic efficiencies, or the like. In other embodiments, the organic passivating layer may be used as a protective sacrificial layer and reduce contact resistance or reduce resistance of doped regions. The organic passivation layer may be formed without the need for high-temperature processing.
    Type: Grant
    Filed: July 20, 2009
    Date of Patent: February 14, 2012
    Assignee: California Institute of Technology
    Inventors: Nathan S. Lewis, William J. Royea
  • Publication number: 20120032146
    Abstract: Embodiments of an apparatus and methods of providing a quantum well device for improved parallel conduction are generally described herein. Other embodiments may be described and claimed.
    Type: Application
    Filed: October 17, 2011
    Publication date: February 9, 2012
    Inventors: Ravi Pillarisetty, Mantu Hudait, Been-Yin Jin, Benjamin Chu-Kung, Robert Chau
  • Patent number: 8105924
    Abstract: A far subcollector, or a buried doped semiconductor layer located at a depth that exceeds the range of conventional ion implantation, is formed by ion implantation of dopants into a region of an initial semiconductor substrate followed by an epitaxial growth of semiconductor material. A reachthrough region to the far subcollector is formed by outdiffusing a dopant from a doped material layer deposited in the at least one deep trench that adjoins the far subcollector. The reachthrough region may be formed surrounding the at least one deep trench or only on one side of the at least one deep trench. If the inside of the at least one trench is electrically connected to the reachthrough region, a metal contact may be formed on the doped fill material within the at least one trench. If not, a metal contact is formed on a secondary reachthrough region that contacts the reachthrough region.
    Type: Grant
    Filed: January 21, 2010
    Date of Patent: January 31, 2012
    Assignee: International Business Machines Corporation
    Inventors: Bradley A. Orner, Robert M. Rassel, David C. Sheridan, Steven H. Voldman
  • Patent number: 8105894
    Abstract: A formation method of an element isolation film according to which a high-voltage transistor with an excellent characteristic can be formed is provided. On a substrate, a gate oxide film is previously formed. A CMP stopper film is formed thereon, and thereafter, a gate oxide film and a CMP stopper film are etched. The semiconductor substrate is etched to form a trench. Further, before the trench is filled with a field insulating film, an liner insulating film is formed at a trench interior wall, and a concave portion at the side surface of the gate oxide film under the CMP stopper film is filled with the liner insulating film. In this manner, formation of void in the element isolation film laterally positioned with respect to the gate oxide film can be prevented.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: January 31, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masayuki Tajiri, Takayoshi Hashimoto, Hisashi Yonemoto, Toyohiro Harazono
  • Patent number: 8105923
    Abstract: The invention relates to a method for forming a semiconductor material obtained by sintering powders and to a semiconductor material. The method comprises a compression and heat treatment stage such that one part of the powder is melted or becomes viscous. The material can be used in the photovoltaic field.
    Type: Grant
    Filed: April 9, 2004
    Date of Patent: January 31, 2012
    Assignees: Centre National de la Recherche Scientifique, Universite de Poitiers
    Inventor: Alain Straboni
  • Patent number: 8101492
    Abstract: One or more embodiments relate to a method of forming a semiconductor device, including: providing a substrate; forming a gate stack over the substrate, the gate stack including a control gate over a charge storage layer; forming a conductive layer over the gate stack; etching the conductive layer to remove a portion of the conductive layer; and forming a select gate, the forming the select gate comprising etching a remaining portion of the conductive layer.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: January 24, 2012
    Assignee: Infineon Technologies AG
    Inventors: John Power, Danny Pak-Chum Shum
  • Patent number: 8101927
    Abstract: A masking apparatus includes a mask positioned upstream of a target positioned for treatment with ions. The mask is sized relative to the target to cause a first half of the target to be treated with a selective treatment of ions through the mask and a second half of the target to be treated with a blanket treatment of ions unimpeded by the mask during a first time interval. The masking apparatus also includes a positioning mechanism to change a relative position of the mask and the target so that the second half of the target is treated with the selective treatment of ions and the first half of the target is treated with the blanket implant during a second time interval. An ion implanter having the masking apparatus is also provided.
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: January 24, 2012
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Charles T. Carlson, William T. Weaver
  • Patent number: 8097530
    Abstract: A method for manufacturing a SiC semiconductor device includes: forming an impurity layer in a SiC layer; and forming an oxide film on the SiC layer. The forming the impurity layer includes: implanting an impurity in the SiC layer; applying a cap layer on the SiC layer; annealing the cap layer to be transformed a carbon layer; annealing the SiC layer to activate the impurity; and removing the carbon layer. The annealing the SiC layer includes: increasing a temperature of the SiC layer from a second temperature to a first temperature within a first time duration; and decreasing the temperature of the SiC layer from the first temperature to the second temperature within a second time duration. The first temperature is equal to or higher than 1800° C., and the second temperature is lower than 1800° C. The first and second time durations are small.
    Type: Grant
    Filed: June 10, 2008
    Date of Patent: January 17, 2012
    Assignee: DENSO CORPORATION
    Inventor: Hiroki Nakamura
  • Publication number: 20120001270
    Abstract: A method of manufacturing an integrated circuit (IC), comprising: defining a plurality of continuous active areas; forming conducting lines extending over the active areas; and using the conducting lines as a mask, introducing dopant into the active areas. Connections are provided between doped regions and conducting lines to form first and second circuit portions, at least one active area being continuous between those portions. In that active area, connections are provided between doped regions and conducting lines to form a pair of diode-connected transistors in reverse bias to one another between the first and second circuit portions, connected so as to leave a shared, unconnected doped region between the pair. The present invention also relates to a corresponding IC.
    Type: Application
    Filed: October 24, 2008
    Publication date: January 5, 2012
    Applicant: ICERA INC.
    Inventor: Trevor Monk Kenneth
  • Patent number: 8084338
    Abstract: The depletion of a gate electrode (103) is suppressed in such a way that impurities are introduced into the gate electrode that is formed on a semiconductor substrate (101), with a gate insulating film (102) interposed between the gate electrode (103) and the semiconductor substrate (101), and that, by irradiating a laser beam onto the gate electrode (103), the introduced impurities are made to diffuse up to the interface between the gate electrode (103) and the gate insulating film (102).
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: December 27, 2011
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Tomonari Yamamoto, Kenichi Okabe
  • Publication number: 20110309412
    Abstract: Superjunction collectors for transistors are discussed in this application. According to one embodiment, a bipolar transistor having a superjunction collector structure can comprise a collector electrode, a base electrode, an emitter electrode, a collector-base space charge region, and a superjunction collector. The collector-base space charge region can be disposed in electrical communication between the collector electrode and the base electrode. The superjunction collector region can be disposed in the collector-base space charge region. The superjunction collector region can comprise a plurality of alternating horizontally disposed P-type and N-type layers. The layers can be horizontally disposed layers that are layered on top of each other. The P-type and N-type layers can be doped with different types of doping levels. Other aspects, embodiments, and features are also discussed and claimed.
    Type: Application
    Filed: April 8, 2010
    Publication date: December 22, 2011
    Applicant: Georgia Tech Research Corporation
    Inventors: Jiahui Yuan, John D. Cressler
  • Patent number: 8076226
    Abstract: An apparatus for annealing a substrate includes a substrate stage having a substrate mounting portion configured to mount the substrate; a heat source having a plurality of heaters disposed under the substrate mounting portion, the heaters individually preheating a plurality areas defined laterally in the substrate through a bottom surface of the substrate; and a light source facing a top surface of the substrate, configured to irradiate a pulsed light at a pulse width of about 0.1 ms to about 100 ms on the entire top surface of the substrate.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: December 13, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Takayuki Ito
  • Patent number: 8076225
    Abstract: A method for manufacturing a solid-state image capturing device according to the present invention, in which from a plurality of light receiving sections for photoelectrically converting incident light into signal electric charge, the signal electric charge is read to an electric charge detection section through transfer sections located under respective reading gate electrodes, each electric charge detection being shared by each of the plurality of light receiving sections, the method including: transfer section impurity region forming step of performing an ion implantation process from an ion implantation direction wherein the location of an edge surface of an impurity region of the transfer section and the location of an edge surface of the reading gate electrode corresponding to the impurity region match each other at each reading gate electrode.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: December 13, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Yoshimitsu Nakashima
  • Publication number: 20110298104
    Abstract: A semiconductor body comprises a protective structure. The protective structure (10) comprises a first and a second region (11, 12) which have a first conductivity type and a third region (13) that has a second conductivity type. The second conductivity type is opposite the first conductivity type. The first and the second region (11, 12) are arranged spaced apart in the third region (13), so that a current flow from the first region (11) to the second region (12) is made possible for the limiting of a voltage difference between the first and the second region (11, 12). The protective structure comprises an insulator (14) that is arranged on the semiconductor body (9) and an electrode (16) that is constructed with floating potential and is arranged on the insulator (14).
    Type: Application
    Filed: September 16, 2009
    Publication date: December 8, 2011
    Applicant: Austriamicrosystems AG
    Inventor: Hubert Enichlmair
  • Patent number: 8067277
    Abstract: An active matrix pixel device is provided, for example an electroluminescent display device, the device comprising circuitry supported by a substrate and including a polysilicon TFT (10) and an amorphous silicon thin film PIN diode (12). Polysilicon islands are formed before an amorphous silicon layer is deposited for the PIN diode. This avoids the exposure of the amorphous silicon to high temperature processing. The TFT comprises doped source/drain regions (16a,17a), one of which (17a) may also provide the n-type or p-type doped region for the diode. Advantageously, the requirement to provide a separate doped region for the photodiode is removed, thereby saving processing costs. A second TFT (10b) having a doped source/drain region (16b,17b) of the opposite conductivity type may provide the other doped region (16b) for the diode, wherein the intrinsic region (25) is disposed laterally between the two TFTs, overlying each of the respective polysilicon islands.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: November 29, 2011
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Steven C. Deane
  • Publication number: 20110287616
    Abstract: This invention discloses a bottom-anode Schottky (BAS) diode that includes an anode electrode disposed on a bottom surface of a semiconductor substrate. The bottom-anode Schottky diode further includes a sinker dopant region disposed at a depth in the semiconductor substrate extending substantially to the anode electrode disposed on the bottom surface of the semiconductor and the sinker dopant region covered by a buried Schottky barrier metal functioning as a Schottky anode.
    Type: Application
    Filed: June 30, 2011
    Publication date: November 24, 2011
    Inventor: François Hébert
  • Patent number: 8058091
    Abstract: A photodetector includes a semiconductor substrate having first and second main surfaces opposite to each other. The photodetector includes at least one trench formed in the first main surface and a first anode/cathode region having a first conductivity formed proximate the first main surface and sidewalls of the at least one trench. The photodetector includes a second anode/cathode region proximate the second main surface. The second anode/cathode region has a second conductivity opposite the first conductivity. The at least one trench extends to the second main surface of the semiconductor substrate.
    Type: Grant
    Filed: July 18, 2008
    Date of Patent: November 15, 2011
    Assignee: Icemos Technology Ltd.
    Inventors: Robin Wilson, Conor Brogan, Hugh J. Griffin, Cormac MacNamara
  • Patent number: 8043946
    Abstract: A doping mixture for coating semiconductor substrates which are then subjected to a high temperature treatment to form a doped layer includes at least one p- or n-dopant, water and a mixture of two or more surfactants. At least one of the surfactants is nonionic. Also, provided are a method for producing such a doping mixture and the use thereof.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: October 25, 2011
    Assignees: Centrotherm Photovoltaics AG, Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.
    Inventors: Daniel Biro, Catherine Voyer, Harald Wanka, Jörg Koriath
  • Publication number: 20110256684
    Abstract: The present invention provides a field effect transistor including an oxide film as a semiconductor layer, wherein the oxide film includes one of a source part and a drain part to which one of hydrogen and deuterium is added.
    Type: Application
    Filed: June 27, 2011
    Publication date: October 20, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tatsuya Iwasaki, Hideya Kumomi
  • Patent number: 8039330
    Abstract: The invention is directed to a method for manufacturing a semiconductor. The method comprises steps of providing a substrate having a gate structure formed thereon and forming a source/drain extension region in the substrate adjacent to the gate structure. A spacer is formed on the sidewall of the gate structure and a source/drain region is formed in the substrate adjacent to the spacer but away from the gate structure. A bevel carbon implantation process is performed to implant a plurality carbon atoms into the substrate and a metal silicide layer is formed on the gate structure and the source/drain region.
    Type: Grant
    Filed: January 8, 2007
    Date of Patent: October 18, 2011
    Assignee: United Microelectronics Corp.
    Inventors: Shyh-Fann Ting, Cheng-Tung Huang, Li-Shian Jeng, Kun-Hsien Lee, Wen-Han Hung, Tzyy-Ming Cheng
  • Publication number: 20110241182
    Abstract: An improved die seal ring is described which includes at least one break. In the region of the break in the die seal ring, the doping is modified so that the impedance of the electrical path across the break through the substrate is increased. Offsets in the break may also be used and the offset may be within a break in a track and/or between breaks in different tracks, where the die seal ring includes more than one track.
    Type: Application
    Filed: November 10, 2009
    Publication date: October 6, 2011
    Applicant: CAMBRIDGE SILICON RADIO LTD.
    Inventors: Rainer Herberholz, Howard Godfrey
  • Patent number: 8021953
    Abstract: A microelectronic device includes: at least one cell or element including at least one first electrode, at least one second electrode, and at least one stack of thin layers between the first electrode and the second electrode. The stack includes at least one doped chalcogenide layer capable of forming a solid electrolyte, the doped chalcogenide layer being provided on and in contact with the first electrode; at least one interface layer provided on and in contact with the doped chalcogenide layer, the interface layer being based on a material different from the chalcogenide, the material being carbon or carbon comprising a metallic additive or a semiconducting additive; and at least one metallic ion donor layer provided on and in contact with the interface layer, the metallic ion donor layer being an ion source for the solid electrolyte.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: September 20, 2011
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Cyril Dressler, Veronique Sousa
  • Patent number: 8021936
    Abstract: A thin film transistor (TFT) and a method of manufacturing the same are provided. The TFT includes a transparent substrate, an insulating layer on a region of the transparent substrate, a monocrystalline silicon layer, which includes source, drain, and channel regions, on the insulating layer and a gate insulating film and a gate electrode on the channel region of the monocrystalline silicon layer.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: September 20, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Takashi Noguchi, Wenxu Xianyu, Hans S. Cho, Huaxiang Yin
  • Patent number: 8012818
    Abstract: A method of manufacturing a semiconductor device based on a SiC substrate involves forming an oxide layer on a Si-terminated face of the SiC substrate at an oxidation rate sufficiently high to achieve a near interface trap density below 5×1011 cm?2; and annealing the oxidized SiC substrate in a hydrogen-containing environment, to passivate deep traps formed in the oxide-forming step, thereby enabling manufacturing of a SiC-based MOSFET having improved inversion layer mobility and reduced threshold voltage. It has been found that the density of DTs increases while the density of NITs decreases when the Si-face of the SiC substrate is subject to rapid oxidation. The deep traps formed during the rapid oxidation can be passivated by hydrogen annealing, thus leading to a significantly decreased threshold voltage for a semiconductor device formed on the oxide.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: September 6, 2011
    Assignee: NXP B.V.
    Inventors: Thomas C. Roedle, Elnar O. Sveinbjornsson, Halldor O. Olafsson, Gudjon I. Gudjonsson, Carl F. Allerstam
  • Patent number: 8013343
    Abstract: SiC single crystal that includes a first dopant functioning as an acceptor, and a second dopant functioning as a donor is provided, where the content of the first dopant is no less than 5×1015 atoms/cm3, the content of the second dopant is no less than 5×1015 atoms/cm3, and the content of the first dopant is greater than the content of the second dopant. A manufacturing method for silicon carbide single crystal is provided with the steps of: fabricating a raw material by mixing a metal boride with a material that includes carbon and silicon; vaporizing the raw material; generating a mixed gas that includes carbon, silicon, boron and nitride; and growing silicon carbide single crystal that includes boron and nitrogen on a surface of a seed crystal substrate by re-crystallizing the mixed gas on the surface of the seed crystal substrate.
    Type: Grant
    Filed: October 27, 2005
    Date of Patent: September 6, 2011
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hiromu Shiomi, Hiroyuki Kinoshita
  • Publication number: 20110198610
    Abstract: To provide a nitride semiconductor crystal, comprising: laminated homogeneous nitride semiconductor layers, with a thickness of 2 mm or more, wherein the laminated homogeneous nitride semiconductor layers are constituted so that a nitride semiconductor layer with low dopant concentration and a nitride semiconductor layer with high dopant concentration are alternately laminated by two cycles or more.
    Type: Application
    Filed: August 27, 2010
    Publication date: August 18, 2011
    Applicant: HITACHI CABLE, LTD.
    Inventor: Hajime FUJIKURA
  • Publication number: 20110186805
    Abstract: A graphene substrate is doped with one or more functional groups to form an electronic device.
    Type: Application
    Filed: May 7, 2010
    Publication date: August 4, 2011
    Inventors: Jeffrey A. Bowers, Roderick A. Hyde, Muriel Y. Ishikawa, Jordin T. Kare, Clarence T. Tegreene, Tatsushi Toyokuni, Richard N. Zare
  • Publication number: 20110186807
    Abstract: A graphene substrate is doped with one or more functional groups to form an electronic device.
    Type: Application
    Filed: May 7, 2010
    Publication date: August 4, 2011
    Inventors: Jeffrey A. Bowers, Roderick A. Hyde, Muriel Y. Ishikawa, Jordin T. Kare, Clarence T. Tegreene, Tatsushi Toyokuni, Richard N. Zare
  • Patent number: 7989282
    Abstract: A method and structure for preventing latchup. The structure includes a latchup sensitive structure and a through wafer via structure bounding the latch-up sensitive structure to prevent parasitic carriers from being injected into the latch-up sensitive structure.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: August 2, 2011
    Assignee: International Business Machines Corporation
    Inventor: Steven H. Voldman
  • Patent number: 7989366
    Abstract: Methods are disclosed for activating dopants in a doped semiconductor substrate. A carbon precursor is flowed into a substrate processing chamber within which the doped semiconductor substrate is disposed. A plasma is formed from the carbon precursor in the substrate processing chamber. A carbon film is deposited over the substrate with the plasma. A temperature of the substrate is maintained while depositing the carbon film less than 500° C. The deposited carbon film is exposed to electromagnetic radiation for a period less than 10 ms, and has an extinction coefficient greater than 0.3 at a wavelength comprised by the electromagnetic radiation.
    Type: Grant
    Filed: August 24, 2007
    Date of Patent: August 2, 2011
    Assignee: Applied Materials, Inc.
    Inventors: Jeffrey C. Munro, Srinivas D. Nemani, Young S. Lee, Marlon Menezes, Christopher Dennis Bencher, Vijay Parihar
  • Patent number: 7985690
    Abstract: A method for fabricating a semiconductor device is disclosed. The method includes providing a substrate; forming one or more gate structures over the substrate; forming a buffer layer over the substrate, including over the one or more gate structures; forming an etch stop layer over the buffer layer; forming a interlevel dielectric (ILD) layer over the etch stop layer; and removing a portion of the buffer layer, a portion of the etch stop layer, and a portion of the ILD layer over the one or more gate structures.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: July 26, 2011
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Kong-Beng Thei, Harry Chuang, Su-Chen Lai, Gary Shen
  • Patent number: 7981482
    Abstract: Methods for forming doped silane and/or semiconductor thin films, doped liquid phase silane compositions useful in such methods, and doped semiconductor thin films and structures. The composition is generally liquid at ambient temperatures and includes a Group IVA atom source and a dopant source. By irradiating a doped liquid silane during at least part of its deposition, a thin, substantially uniform doped oligomerized/polymerized silane film may be formed on a substrate. Such irradiation is believed to convert the doped silane film into a relatively high-molecular weight species with relatively high viscosity and relatively low volatility, typically by cross-linking, isomerization, oligomerization and/or polymerization. A film formed by the irradiation of doped liquid silanes can later be converted (generally by heating and annealing/recrystallization) into a doped, hydrogenated, amorphous silicon film or a doped, at least partially polycrystalline silicon film suitable for electronic devices.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: July 19, 2011
    Assignee: Kovio, Inc.
    Inventors: Fabio Zürcher, Wenzhuo Guo, Joerg Rockenberger, Vladimir K. Dioumaev, Brent Ridley, Klaus Kunze, James Montague Cleeves
  • Publication number: 20110170821
    Abstract: An optical switch structure and a method for fabricating the optical switch structure provide at least two ring waveguides located and formed supported over a substrate. At least one of the at least two ring waveguides includes at least one PIN diode integral with the ring waveguide as a tuning component for an optical switch device that derives from the optical switch structure. The PIN diode includes different doped silicon slab regions internal to and external to the ring waveguide, and an intrinsic region there between that includes the ring waveguide. The method uses two photolithographic process steps, and also preferably a silicon-on-insulator substrate, to provide the ring waveguides formed of a monocrystalline silicon semiconductor material.
    Type: Application
    Filed: November 4, 2010
    Publication date: July 14, 2011
    Applicant: CORNELL UNIVERSITY
    Inventors: Michal Lipson, Sasikanth Manipatruni, Hugo Leonardo Rocha de Lira
  • Patent number: 7960286
    Abstract: A method of manufacturing a semiconductor structure is provided. The method includes forming a hard mask pattern on a semiconductor substrate, wherein the hard mask pattern covers active regions; forming a trench in the semiconductor substrate within an opening defined by the hard mask pattern; filling the trench with a dielectric material, resulting in a trench isolation feature; performing an ion implantation to the trench isolation feature using the hard mask pattern to protect active regions of the semiconductor substrate; and removing the hard mask pattern after the performing of the ion implantation.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: June 14, 2011
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Ming-Han Liao, Tze-Liang Lee
  • Patent number: 7955938
    Abstract: An apparatus for supplying electrical power to a movable member. The apparatus includes a fixed member, the movable member moving relative to the fixed member, a flexible wiring member having an end connected to the movable member and another end connected to the fixed member, configured to transmit the electrical power from the fixed member to the movable member, and a cooling member configured to cool the fixed member.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: June 7, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takao Ukaji
  • Publication number: 20110127638
    Abstract: Improved complementary doping methods are described herein. The complementary doping methods generally involve inducing a first and second chemical reaction in at least a first and second portion, respectively, of a dopant source, which has been disposed on a thin film of a semiconductor or semimetal material. The chemical reactions result in the introduction of an n-type dopant, a p-type dopant, or both from the dopant source to each of the first and second portions of the thin film of the semiconductor or semimetal. Ultimately, the methods produce at least one n-type and at least one p-type region in the thin film of the semiconductor or semimetal.
    Type: Application
    Filed: November 30, 2010
    Publication date: June 2, 2011
    Applicant: Georgia Tech Research Corporation
    Inventors: Kevin Andrew Brenner, Raghunath Murali
  • Patent number: 7943957
    Abstract: A diode 10 comprises an SOI substrate in which are stacked a semiconductor substrate 20, an insulator film 30, and a semiconductor layer 40. A bottom semiconductor region 60, an intermediate semiconductor region 53, and a surface semiconductor region 54 are formed in the semiconductor layer 40. The bottom semiconductor region 60 includes a high concentration of n-type impurity. The intermediate semiconductor region 53 includes a low concentration of n-type impurity. The surface semiconductor region 54 includes p-type impurity.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: May 17, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masato Taki, Masahiro Kawakami, Kiyoharu Hayakawa, Masayasu Ishiko
  • Patent number: 7943449
    Abstract: A method for producing a semiconductor structure and a semiconductor component are described.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: May 17, 2011
    Assignee: Infineon Technologies Austria AG
    Inventors: Anton Mauder, Stefan Sedlmaier, Ralf Erichsen, Hans Weber, Oliver Haeberlen, Franz Hirler