Comprising Lattice Mismatched Active Layers (e.g., Sige Strained Layer Transistors) (epo) Patents (Class 257/E29.193)
  • Patent number: 7145169
    Abstract: A field-effect transistor includes a silicon layer formed on an insulating film, a first-conductivity-type base and a second-conductivity-type source layers formed in the silicon layer being adjacent to each other, a second-conductivity-type drain layer formed in the silicon layer being separated from the source layer with the base layer being interposed therebetween, a gate-to-drain offset layer formed between the base and drain layers, having a resistance higher than that of the base layer, and a gate electrode formed on at least a surface of the base layer via a gate insulating film wherein the silicon layer in which the base layer is formed is a strained silicon layer.
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: December 5, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Ryujiro Saso, Mitsuhiko Kitagawa, Takashi Nishimura, Yoshiaki Aizawa
  • Publication number: 20060255365
    Abstract: A semiconductor chip includes a semiconductor substrate 126, in which first and second active regions are disposed. A resistor 124 is formed in the first active region and the resistor 124 includes a doped region 128 formed between two terminals 136. A strained channel transistor 132 is formed in the second active region. The transistor includes a first and second stressor 141, formed in the substrate oppositely adjacent a strained channel region 143.
    Type: Application
    Filed: July 10, 2006
    Publication date: November 16, 2006
    Inventors: Chih-Hsin Ko, Wen-Chin Lee, Yee-Chia Yeo, Chun-Chieh Lin, Chenming Hu
  • Patent number: 7129530
    Abstract: A high capacity semiconductor device having a narrowed emitter layer. The semiconductor device includes a collector layer formed on a semiconductor substrate. An SiGe alloy layer is formed on the collector layer. A silicon film is formed on the SiGe layer. An emitter electrode is formed on the silicon film. A side wall film covers the side surface of the emitter electrode. The bottom surface of the emitter electrode is located above the lower surface of the side wall film. Part of the second region of the silicon film is located between the SiGe alloy layer and the side wall film. An impurity region is formed adjacent to the conductive layer. A silicide film is formed along the side surface of the second region, the side surface of the conductive layer, and the surface of the impurity region.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: October 31, 2006
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Koichi Saito, Yoshikazu Ibara, Tatsuhiko Koide, Daichi Suma
  • Patent number: 7129516
    Abstract: An integrated circuit (IC) includes a CMOS device formed above a semiconductor substrate having ions therein that are implanted in the semiconductor substrate by an ion recoil procedure. The IC preferably, but not necessarily, incorporates sub-0.1 micron technology in the CMOS device. The implanted ions may preferably be germanium ions. A strained-silicon layer is preferably, but not necessarily, formed above the ion-implanted layer of the semiconductor substrate. The strained-silicon layer may be formed by a silicon epitaxial growth on the ion-implanted layer or by causing the ions to recoil into the semiconductor substrate with such energy that a region of the semiconductor substrate in the vicinity of the surface thereof is left substantially free of the ions, thereby forming a strained-silicon layer in the substantially ion-free region.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: October 31, 2006
    Assignee: LSI Logic Corporation
    Inventors: Agajan Suvkhanov, Mohammad R. Mirabedini
  • Patent number: 7115945
    Abstract: Disclosing is a strained silicon finFET device having a strained silicon fin channel in a double gate finFET structure. The disclosed finFET device is a double gate MOSFET consisting of a silicon fin channel controlled by a self-aligned double gate for suppressing short channel effect and enhancing drive current. The silicon fin channel of the disclosed finFET device is a strained silicon fin channel, comprising a strained silicon layer deposited on a seed fin having different lattice constant, for example, a silicon layer deposited on a silicon germanium seed fin, or a carbon doped silicon layer deposited on a silicon seed fin. The lattice mismatch between the silicon layer and the seed fin generates the strained silicon fin channel in the disclosed finFET device to improve hole and electron mobility enhancement, in addition to short channel effect reduction characteristic inherently in a finFET device.
    Type: Grant
    Filed: January 6, 2006
    Date of Patent: October 3, 2006
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Jong-Jan Lee, Sheng Teng Hsu, Douglas J. Tweet, Jer-Shen Maa
  • Patent number: 7109096
    Abstract: A method of manufacturing a semiconductor device including: providing a substrate having an insulating layer and a single crystal silicon layer formed on the insulating layer; forming a strain-inducing semiconductor layer on the single crystal silicon layer, the strain-inducing semiconductor having the lattice constant differing from the lattice constant of the single crystal silicon layer; changing the single crystal silicon layer into a strained silicon layer by matching a lattice of the single crystal silicon layer with a lattice of the strain-inducing semiconductor layer; and removing the strain-inducing semiconductor layer.
    Type: Grant
    Filed: February 11, 2004
    Date of Patent: September 19, 2006
    Assignee: Seiko Epson Corporation
    Inventor: Teruo Takizawa
  • Patent number: 7095043
    Abstract: An (SiGe)C layer having a stoichiometric ratio of about 1:1 is locally formed on an Si layer, a large forbidden band width semiconductor device is prepared inside the layered structure thereof and an Si semiconductor integrated circuit is formed in the regions not formed with the layered structure, whereby high frequency high power operation of the device is enabled by the large forbidden band width semiconductor device and high performance is attained by hybridization of the Si integrated circuit.
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: August 22, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Katsuya Oda, Nobuyuki Sugii, Makoto Miura, Isao Suzumura, Katsuyoshi Washio
  • Patent number: 6960781
    Abstract: A structure including a transistor and a trench structure, with the trench structure inducing only a portion of the strain in a channel region of the transistor.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: November 1, 2005
    Assignee: Amberwave Systems Corporation
    Inventors: Matthew T. Currie, Anthony J. Lochtefeld
  • Patent number: 6949761
    Abstract: A structure and method of fabricating a high-mobility semiconductor layer structure and field-effect transistor (MODFET) that includes a high-mobility conducting channel, while at the same time, maintaining counter doping to control deleterious short-channel effects. The MODFET design includes a high-mobility conducting channel layer wherein the method allows the counter doping to be formed using a standard technique such as ion implantation, and further allows the high-mobility channel to be in close proximity to the counter doping without degradation of the mobility.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: September 27, 2005
    Assignee: International Business Machines Corporation
    Inventors: Jack O. Chu, Steven J. Koester, Qiqing C. Ouyang
  • Patent number: 6855963
    Abstract: A silicon and silicon germanium based semiconductor MODFET device design and method of manufacture. The MODFET design includes a high-mobility layer structure capable of ultra high-speed, low-noise for a variety of communication applications including RF, microwave, sub-millimeter-wave and millimeter-wave. The epitaxial field effect transistor layer structure includes critical (vertical and lateral) device scaling and layer structure design for a high mobility strained n-channel and p-channel transistor incorporating silicon and silicon germanium layers to form the optimum modulation-doped heterostructure on an ultra thin SOI or SGOI substrate capable of achieving greatly improved RF performance.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: February 15, 2005
    Assignee: International Business Machines Corporation
    Inventors: Jack O. Chu, Qiqing C. Ouyang
  • Patent number: 6699741
    Abstract: A high frequency bipolar transistor that has a silicon germanium intrinsic base region is formed in a semiconductor fabrication process that forms the extrinsic base regions after the intrinsic base region has been formed. The extrinsic base regions are epitaxially grown single crystal silicon that is doped during the growth.
    Type: Grant
    Filed: August 16, 2002
    Date of Patent: March 2, 2004
    Assignee: National Semiconductor Corporation
    Inventors: Alexei Sadovnikov, Christopher John Knorr