Patents by Inventor Thomas N. Adam

Thomas N. Adam has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9330908
    Abstract: A semiconductor structure includes a first semiconductor region. The first semiconductor region includes a first semiconductor layer composed of a group IV semiconductor material having a top surface and a back surface. The first semiconductor layer has an opening in the top surface to at least a depth greater than an aspect ratio trapping (ART) distance. The first semiconductor region also has a second semiconductor layer composed of a group III/V semiconductor compound deposited within the opening and on the top surface of the first semiconductor layer. The second semiconductor layer forms an ART region from the bottom of the opening to the ART distance.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: May 3, 2016
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Thomas N. Adam, Kangguo Cheng, Pouya Hashemi, Ali Khakifirooz, Alexander Reznicek
  • Patent number: 9312273
    Abstract: FinFET devices and methods of making the same. A structure includes: a substrate with a buried insulator, a plurality of fins over the buried insulator, and a nitride material filing spaces between the plurality of fins, wherein the plurality of fins remain uncovered by the nitride.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: April 12, 2016
    Assignee: International Business Machines Corporation
    Inventors: Thomas N. Adam, Kangguo Cheng, Ali Khakifirooz, Alexander Reznicek, Raghavasimhan Sreenivasan
  • Patent number: 9281198
    Abstract: A method of forming a semiconductor device is disclosed. The method includes forming a first dielectric layer on a substrate; forming a set of bias lines on the first dielectric layer; covering the set of bias lines with a second dielectric layer; forming a semiconductor layer on the second dielectric layer; and forming a set of devices on the semiconductor layer above the set of bias lines.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: March 8, 2016
    Assignee: GlobalFoundries, Inc.
    Inventors: Thomas N. Adam, Kangguo Cheng, Ali Khakifirooz, Alexander Reznicek, Raghavasimhan Sreenivasan
  • Publication number: 20160064523
    Abstract: A semiconductor structure including a semiconductor wafer. The semiconductor wafer includes a gate structure, a first trench in the semiconductor wafer adjacent to a first side of the gate structure and a second trench adjacent to a second side of the gate structure, the first and second trenches filled with a doped epitaxial silicon to form a source in the filled first trench and a drain in the filled second trench such that each of the source and drain are recessed and have an inverted facet. In a preferred exemplary embodiment, the epitaxial silicon is doped with boron.
    Type: Application
    Filed: November 10, 2015
    Publication date: March 3, 2016
    Applicant: GLOBALFOUNDRIES INC.
    Inventors: Thomas N. ADAM, Kangguo CHENG, Ali KHAKIFIROOZ, Jinghong LI, Alexander REZNICEK
  • Patent number: 9257536
    Abstract: FinFET structures and methods of formation are disclosed. Fins are formed on a bulk substrate. A crystalline insulator layer is formed on the bulk substrate with the fins sticking out of the epitaxial oxide layer. A gate is formed around the fins protruding from the crystalline insulator layer. An epitaxially grown semiconductor region is formed in the source drain region by merging the fins on the crystalline insulator layer to form a fin merging region.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: February 9, 2016
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Thomas N. Adam, Kangguo Cheng, Ali Khakifirooz, Alexander Reznicek, Raghavasimhan Sreenivasan
  • Patent number: 9236463
    Abstract: A semiconductor device including a first lattice dimension III-V semiconductor layer present on a semiconductor substrate, and a second lattice dimension III-V semiconductor layer that present on the first lattice dimension III-V semiconductor layer, wherein the second lattice dimension III-V semiconductor layer has a greater lattice dimension than the first lattice dimension III-V semiconductor layer, and the second lattice dimension III-V semiconductor layer has a compressive strain present therein. A gate structure is present on a channel portion of the second lattice dimension III-V semiconductor layer, wherein the channel portion of second lattice dimension III-V semiconductor layer has the compressive strain. A source region and a drain region are present on opposing sides of the channel portion of the second lattice dimension III-V semiconductor layer.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: January 12, 2016
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Thomas N. Adam, Kangguo Cheng, Bruce B. Doris, Pouya Hashemi, Ali Khakifirooz, Alexander Reznicek
  • Patent number: 9219139
    Abstract: A semiconductor device including at least two fin structures on a substrate surface and a functional gate structure present on the at least two fin structures. The functional gate structure includes at least one gate dielectric that is in direct contact with at least the sidewalls of the two fin structures, and at least one gate conductor on the at least one gate dielectric. The sidewall of the gate structure is substantially perpendicular to the upper surface of the substrate surface, wherein the plane defined by the sidewall of the gate structure and a plane defined by an upper surface of the substrate surface intersect at an angle of 90°+/?5°. An epitaxial semiconductor material is in direct contact with the at least two fin structures.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: December 22, 2015
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Thomas N. Adam, Kangguo Cheng, Ali Khakifirooz, Alexander Reznicek
  • Publication number: 20150348995
    Abstract: A FinFET device includes a substrate with a buried insulator, a plurality of fins over the buried insulator, and a nitride material filing spaces between the plurality of fins. At least one sidewall of each of the plurality of fins remain uncovered by the nitride material. The nitride material may also not contact the bottom of the plurality of fins.
    Type: Application
    Filed: August 11, 2015
    Publication date: December 3, 2015
    Inventors: Thomas N. Adam, Kangguo Cheng, Ali Khakifirooz, Alexander Reznicek, Raghavasimhan Sreenivasan
  • Patent number: 9202689
    Abstract: A method and structure of an embedded stressor in a semiconductor transistor device having a sigma-shaped channel sidewall and a vertical isolation sidewall. The embedded stressor structure is made by a first etch to form a recess in a substrate having a gate and first and second spacers. The second spacers are removed and a second etch creates a step in the recess on a channel sidewall. An anisotropic etch creates facets in the channel sidewall of the recess. Where the facets meet, a vertex is formed. The depth of the vertex is determined by the second etch depth (step depth). The lateral position of the vertex is determined by the thickness of the first spacers. A semiconductor material having a different lattice spacing than the substrate is formed in the recess to achieve the embedded stressor structure.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: December 1, 2015
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Thomas N Adam, Kangguo Cheng, Ali Khakifirooz, Alexander Reznicek
  • Patent number: 9190471
    Abstract: A semiconductor structure including a semiconductor wafer. The semiconductor wafer includes a gate structure, a first trench in the semiconductor wafer adjacent to a first side of the gate structure and a second trench adjacent to a second side of the gate structure, the first and second trenches filled with a doped epitaxial silicon to form a source in the filled first trench and a drain in the filled second trench such that each of the source and drain are recessed and have an inverted facet. In a preferred exemplary embodiment, the epitaxial silicon is doped with boron.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: November 17, 2015
    Assignee: GLOBALFOUNDRIES U.S.2 LLC
    Inventors: Thomas N. Adam, Kangguo Cheng, Ali Khakifirooz, Jinghong Li, Alexander Reznicek
  • Patent number: 9190487
    Abstract: A dielectric metal compound liner can be deposited on a semiconductor fin prior to formation of a disposable gate structure. The dielectric metal compound liner protects the semiconductor fin during the pattering of the disposable gate structure and a gate spacer. The dielectric metal compound liner can be removed prior to formation of source and drain regions and a replacement gate structure. Alternately, a dielectric metal compound liner can be deposited on a semiconductor fin and a gate stack, and can be removed after formation of a gate spacer. Further, a dielectric metal compound liner can be deposited on a semiconductor fin and a disposable gate structure, and can be removed after formation of a gate spacer and removal of the disposable gate structure. The dielectric metal compound liner can protect the semiconductor fin during formation of the gate spacer in each embodiment.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: November 17, 2015
    Assignees: GLOBALFOUNDRIES INC., GLOBALFOUNDRIES U.S. 2 LLC
    Inventors: Ali Khakifirooz, Thomas N. Adam, Kangguo Cheng, Shom Ponoth, Alexander Reznicek, Raghavasimhan Sreenivasan, Xiuyu Cai, Ruilong Xie
  • Publication number: 20150279936
    Abstract: A planar semiconductor device including a semiconductor on insulator (SOI) substrate with source and drain portions having a thickness of less than 10 nm that are separated by a multi-layered strained channel. The multi-layer strained channel of the SOI layer includes a first layer with a first lattice dimension that is present on the buried dielectric layer of the SOI substrate, and a second layer of a second lattice dimension that is in direct contact with the first layer of the multi-layer strained channel portion. A functional gate structure is present on the multi-layer strained channel portion of the SOI substrate. The semiconductor device having the multi-layered channel may also be a finFET semiconductor device.
    Type: Application
    Filed: June 12, 2015
    Publication date: October 1, 2015
    Inventors: Thomas N. Adam, Kangguo Cheng, Ali Khakifirooz, Alexander Reznicek, Davood Shahrjerdi
  • Publication number: 20150279723
    Abstract: A silicon-carbon alloy layer and a silicon-germanium alloy layer are sequentially formed on a silicon-containing substrate with epitaxial alignment. Trenches are formed in the silicon-germanium alloy layer by an anisotropic etch employing a patterned hard mask layer as an etch mask and the silicon-carbon alloy layer as an etch stop layer. Fin-containing semiconductor material portions are formed on a bottom surface and sidewalls of each trench with epitaxial alignment with the silicon-germanium alloy layer and the silicon-carbon alloy layer. The hard mask layer and the silicon-germanium alloy layer are removed, and an oxygen-impermeable spacer is formed on sidewalls of each fin-containing semiconductor material portion. Physically exposed semiconductor portions are converted into semiconductor oxide portions, and the oxygen-impermeable spacers are removed. The remaining portions of the fin-containing semiconductor portions include semiconductor fins, which can be employed to form semiconductor devices.
    Type: Application
    Filed: June 10, 2015
    Publication date: October 1, 2015
    Inventors: Thomas N. Adam, Kangguo Cheng, Ali Khakifirooz, Alexander Reznicek
  • Publication number: 20150228671
    Abstract: A method for manufacturing a fin field-effect transistor (FinFET) device comprises forming a plurality of fins on a substrate, epitaxially growing a sacrificial epitaxy region between the fins, stopping growth of the sacrificial epitaxy region at a beginning of merging of epitaxial shapes between neighboring fins, and forming a dielectric layer on the substrate including the fins and the sacrificial epitaxy region, wherein a portion of the dielectric layer is positioned between the sacrificial epitaxy region extending from fins of adjacent transistors.
    Type: Application
    Filed: April 23, 2015
    Publication date: August 13, 2015
    Inventors: Thomas N. Adam, Kangguo Cheng, Bruce B. Doris, Hong He, Ali Khakifirooz, Alexander Reznicek
  • Publication number: 20150221631
    Abstract: Integrated passive devices for silicon on insulator (SOI) FinFET technologies and methods of manufacture are disclosed. The method includes forming a passive device on a substrate on insulator material. The method further includes removing a portion of the insulator material to expose an underside surface of the substrate on insulator material. The method further includes forming material on the underside surface of the substrate on insulator material, thereby locally thickening the substrate on insulator material under the passive device.
    Type: Application
    Filed: April 15, 2015
    Publication date: August 6, 2015
    Inventors: Thomas N. Adam, Kangguo Cheng, Balasubramanian Pranatharthi Haran, Shom Ponoth, Theodorus E. Standaert, Tenko Yamashita
  • Patent number: 9093564
    Abstract: Integrated passive devices for silicon on insulator (SOI) FinFET technologies and methods of manufacture are disclosed. The method includes forming a passive device on a substrate on insulator material. The method further includes removing a portion of the insulator material to expose an underside surface of the substrate on insulator material. The method further includes forming material on the underside surface of the substrate on insulator material, thereby locally thickening the substrate on insulator material under the passive device.
    Type: Grant
    Filed: March 20, 2013
    Date of Patent: July 28, 2015
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kangguo Cheng, Thomas N. Adam, Balasubramanian Pranatharthi Haran, Shom Ponoth, Theodorus E. Standaert, Tenko Yamashita
  • Patent number: 9093260
    Abstract: A method of fabricating a semiconductor device that includes providing a substrate having at least a first semiconductor layer atop a dielectric layer, wherein the first semiconductor layer has a first thickness of less than 10 nm. The first semiconductor layer is etched with a halide based gas at a temperature of less than 675° C. to a second thickness that is less than the first thickness. A second semiconductor layer is epitaxially formed on an etched surface of the first semiconductor layer. A gate structure is formed directly on the second semiconductor layer. A source region and a drain region is formed on opposing sides of the gate structure.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: July 28, 2015
    Assignee: International Business Machines Corporation
    Inventors: Thomas N. Adam, Kangguo Cheng, Hong He, Ali Khakifirooz, Alexander Reznicek
  • Patent number: 9087687
    Abstract: A method of fabricating a semiconductor device that includes providing a substrate having at least a first semiconductor layer atop a dielectric layer, wherein the first semiconductor layer has a first thickness of less than 10 nm. The first semiconductor layer is etched with a a halide based gas at a temperature of less than 675° C. to a second thickness that is less than the first thickness. A second semiconductor layer is epitaxially formed on an etched surface of the first semiconductor layer. A gate structure is formed directly on the second semiconductor layer. A source region and a drain region is formed on opposing sides of the gate structure.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: July 21, 2015
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Thomas N. Adam, Kangguo Cheng, Hong He, Ali Khakifirooz, Alexander Reznicek
  • Patent number: 9087796
    Abstract: A method of making a semiconductor assembly including the steps of: (i) providing an initial-state assembly including: (a) a fin layer, and (b) a hard mask layer located on top of at least a portion of the fin layer; (ii) performing a first material removal on the initial-state assembly, by CMP, to yield a second-state assembly; and (iii) performing a second material removal on the second-state assembly to yield a third-state assembly. In the first material-removal step: (i) any remaining portion of the soft sacrificial layer is removed, (ii) a portion of the fin layer is removed, and (iii) the lower portion of the hard mask layer is used as a stop layer for the second material removal.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: July 21, 2015
    Assignee: International Business Machines Corporation
    Inventors: Thomas N. Adam, Donald F. Canaperi, Kangguo Cheng, Ali Khakifirooz, Alexander Reznicek, Raghavasimhan Sreenivasan, Charan Veera Venkata Satya Surisetty
  • Patent number: 9087859
    Abstract: A channel region of a finFET has fins having apexes in a first direction parallel to a surface of a substrate, each fin extending downwardly from the apex, with a gate overlying the apexes and between adjacent fins. A semiconductor stressor region extends in at least the first direction away from the fins to apply a stress to the channel region. Source and drain regions of the finFET can be separated from one another by the channel region, with the source and/or drain at least partly in the semiconductor stressor region. The stressor region includes a first semiconductor region and a second semiconductor region overlying and extending from the first semiconductor region. The second semiconductor region can be more doped than the first semiconductor region, and the first and second semiconductor regions can have opposite conductivity types where a portion of the second semiconductor region meets the first semiconductor region.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: July 21, 2015
    Assignee: International Business Machines Corporation
    Inventors: Thomas N. Adam, Kangguo Cheng, Ali Khakifirooz, Alexander Reznicek