Patents by Inventor David Kohen

David Kohen 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).

  • Publication number: 20190067004
    Abstract: A method for depositing a germanium tin (Ge1-xSnx) semiconductor is disclosed. The method may include; providing a substrate within a reaction chamber, heating the substrate to a deposition temperature and exposing the substrate to a germanium precursor and a tin precursor. The method may further include; depositing a germanium tin (Ge1-xSnx) semiconductor on the surface of the substrate, and exposing the germanium tin (Ge1-xSnx) semiconductor to a boron dopant precursor. Semiconductor device structures including a germanium tin (Ge1-xSnx) semiconductor formed by the methods of the disclosure are also provided.
    Type: Application
    Filed: August 22, 2017
    Publication date: February 28, 2019
    Inventors: David Kohen, Harald Benjamin Profijt
  • Patent number: 10141189
    Abstract: In some embodiments, a compound semiconductor is formed by diffusion of semiconductor species from a source semiconductor layer into semiconductor material in a substrate. The source semiconductor layer may be an amorphous or polycrystalline structure, and provides a source of semiconductor species for later diffusion into the other semiconductor material. Advantageously, such a semiconductor layer may be more conformal than an epitaxially grown, crystalline semiconductor layer. As a result, this more conformal semiconductor layer acts as a uniform source of the semiconductor species for diffusion into the semiconductor material in the substrate. In some embodiments, an interlayer is formed between the source semiconductor layer and the substrate, and then the interlayer is trimmed before depositing the source semiconductor layer. In some other embodiments, the source semiconductor layer is deposited directly on the substrate, and has an amorphous or polycrystalline structure.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: November 27, 2018
    Assignee: ASM IP HOLDING B.V.
    Inventors: Harald Profijt, Qi Xie, Jan Willem Maes, David Kohen
  • Publication number: 20180330982
    Abstract: A method of manufacturing a hybrid substrate is disclosed, which comprises: bonding a first semiconductor substrate to a first combined substrate via at least one layer of dielectric material to form a second combined substrate, the first combined substrate includes a layer of III-V compound semiconductor and a second semiconductor substrate, the layer of III-V compound semiconductor arranged intermediate the layer of dielectric material and second semiconductor substrate; removing the second semiconductor substrate from the second combined substrate to expose at least a portion of the layer of III-V compound semiconductor to obtain a third combined substrate; and annealing the third combined substrate at a temperature about 250° C. to 1000° C. to reduce threading dislocation density of the layer of III-V compound semiconductor to obtain the hybrid substrate.
    Type: Application
    Filed: November 10, 2016
    Publication date: November 15, 2018
    Applicants: Nanyang Technological University, Massachusetts Institute of Technology
    Inventors: Kwang Hong Lee, Chuan Seng Tan, Eugene A. Fitzgerald, Shuyu Bao, Eng Kian Kenneth Lee, David Kohen
  • Publication number: 20180190793
    Abstract: In some embodiments, a compound semiconductor is formed by diffusion of semiconductor species from a source semiconductor layer into semiconductor material in a substrate. The source semiconductor layer may be an amorphous or polycrystalline structure, and provides a source of semiconductor species for later diffusion into the other semiconductor material. Advantageously, such a semiconductor layer may be more conformal than an epitaxially grown, crystalline semiconductor layer. As a result, this more conformal semiconductor layer acts as a uniform source of the semiconductor species for diffusion into the semiconductor material in the substrate. In some embodiments, an interlayer is formed between the source semiconductor layer and the substrate, and then the interlayer is trimmed before depositing the source semiconductor layer. In some other embodiments, the source semiconductor layer is deposited directly on the substrate, and has an amorphous or polycrystalline structure.
    Type: Application
    Filed: December 29, 2016
    Publication date: July 5, 2018
    Inventors: Harald Profijt, Qi Xie, Jan Willem Maes, David Kohen
  • Patent number: 9632814
    Abstract: At least one target virtual disk descriptor that describes at least one virtual disk associated with an existing target virtual machine in a target virtualized environment is merged with at least one source virtual disk descriptor that describes at least one virtual disk associated with a source. The merging is carried out to obtain at least one merged virtual disk descriptor compatible with the target virtualized environment. The at least one virtual disk associated with the existing target virtual machine in the target virtualized environment is replaced with the at least one virtual disk associated with the source, in accordance with the at least one merged virtual disk descriptor.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: April 25, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Milton A. Bonilla, Florian Graf, David Kohen, Brian Peterson, Birgit M. Pfitzmann, John J. Rofrano, Kristiann J. Schultz, Christopher C. Young, Xiaolan Zhang
  • Publication number: 20160163896
    Abstract: The invention relates to a process for producing a p-n junction in a photovoltaic cell made of thin CZTS-based films, comprising: a) a step of depositing a film of precursors containing zinc, tin and copper, the amount of zinc being larger than that required to convert the precursors into a CZTS type photovoltaic material and b) a step of annealing the precursors, under a sulphur- and/or selenium-containing atmosphere, so as to obtain a photovoltaic film made of CZTS and a buffer layer made of ZnS1-xSex, where x is comprised between 0 and 1.
    Type: Application
    Filed: July 22, 2014
    Publication date: June 9, 2016
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Louis Grenet, Giovanni Altamura, David Kohen, Raphaël Fillon, Simon Perraud
  • Publication number: 20160110215
    Abstract: At least one target virtual disk descriptor that describes at least one virtual disk associated with an existing target virtual machine in a target virtualized environment is merged with at least one source virtual disk descriptor that describes at least one virtual disk associated with a source. The merging is carried out to obtain at least one merged virtual disk descriptor compatible with the target virtualized environment. The at least one virtual disk associated with the existing target virtual machine in the target virtualized environment is replaced with the at least one virtual disk associated with the source, in accordance with the at least one merged virtual disk descriptor.
    Type: Application
    Filed: December 29, 2015
    Publication date: April 21, 2016
    Inventors: Milton A. Bonilla, Florian Graf, David Kohen, Brian Peterson, Birgit M. Pfitzmann, John J. Rofrano, Kristiann J. Schultz, Christopher C. Young, Xiaolan Zhang
  • Patent number: 9292330
    Abstract: At least one target virtual disk descriptor that describes at least one virtual disk associated with an existing target virtual machine in a target virtualized environment is merged with at least one source virtual disk descriptor that describes at least one virtual disk associated with a source. The merging is carried out to obtain at least one merged virtual disk descriptor compatible with the target virtualized environment. The at least one virtual disk associated with the existing target virtual machine in the target virtualized environment is replaced with the at least one virtual disk associated with the source, in accordance with the at least one merged virtual disk descriptor.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: March 22, 2016
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Milton A. Bonilla, Florian Graf, David Kohen, Brian Peterson, Birgit M. Pfitzmann, John J. Rofrano, Kristiann J. Schultz, Christopher C. Young, Xiaolan Zhang
  • Publication number: 20150309502
    Abstract: Methods, apparatus and computer program products implement embodiments of the present invention that include loading a digital model to a digital manufacturing system having a manufacturing tolerance, and manufacturing, by the digital manufacturing system using the digital model, multiple objects. For each given object, one or more fingerprint measurements of the given object are collected from a fingerprint sensing device having a fingerprint resolution better than the manufacturing tolerance, and using the one or more fingerprint measurements, a unique digital fingerprint is created. The unique digital fingerprint can be stored to a provenance database. Subsequent to storing the unique digital fingerprints, one or more authentication measurements of an authentication object can be collected, and using the one or more authentication measurements, an authentication digital fingerprint can be created.
    Type: Application
    Filed: April 24, 2014
    Publication date: October 29, 2015
    Applicant: International Business Machines Corporation
    Inventors: David Breitgand, David Kohen, Oded Margalit, Kenneth Nagin
  • Publication number: 20140000713
    Abstract: A device includes a plurality of wires of nanometric or micrometric dimensions formed by a semiconductor material chosen from silicon, germanium and a silicon and germanium alloy. The device further includes pellets enhancing the mechanical strength and the optical absorption properties of the device. The pellets have a diameter between 100 nm and 1 ?m and are formed by spherical agglomerates of zinc oxide particles with a diameter between 10 mn and 200 nm. The pellets are in particular obtained by immersing the wires in a bath containing an alcohol-based solvent and zinc acetate under temperature and pressure conditions keeping the alcohol-based solvent in the liquid state and by thermal annealing of the wires transforming the zinc acetate into zinc oxide.
    Type: Application
    Filed: March 6, 2012
    Publication date: January 2, 2014
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: David Kohen, Nicolas Karst, Simon Perraud