Patents by Inventor Giovanni Flamand

Giovanni Flamand 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: 8664525
    Abstract: A method is disclosed for passivating and contacting a surface of a germanium substrate. A passivation layer of amorphous silicon material is formed on the germanium surface. A contact layer of metal, e.g., aluminum, is then formed on the passivation layer. The structure is heated so that the germanium surface makes contact with the contact layer. The aluminum contact layer can be configured for use as a mirroring surface for the back surface of the device. Thus, a passivated germanium surface is disclosed, as well as a solar cell comprising such a structure.
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: March 4, 2014
    Assignees: IMEC, Umicore, N.V.
    Inventors: Niels Posthuma, Giovanni Flamand, Jef Poortmans, Johan van der Heide
  • Patent number: 7964789
    Abstract: A method is disclosed for passivating and contacting a surface of a germanium substrate. A passivation layer of amorphous silicon material is formed on the germanium surface. A contact layer of metal is then formed on the passivation. The structure is heated so that the germanium surface makes contact with the contact layer. Thus, a passivated germanium surface is disclosed, as well as a solar cell comprising such a structure.
    Type: Grant
    Filed: May 6, 2004
    Date of Patent: June 21, 2011
    Assignees: IMEC, Umicore NV
    Inventors: Niels Posthuma, Giovanni Flamand, Jef Poortmans
  • Patent number: 7960645
    Abstract: A method is disclosed for passivating and contacting a surface of a germanium substrate. A passivation layer of amorphous silicon material is formed on the germanium surface. A contact layer of metal is then formed on the passivation. The structure is heated so that the germanium surface makes contact with the contact layer. Thus, a passivated germanium surface is disclosed, as well as a solar cell comprising such a structure.
    Type: Grant
    Filed: October 7, 2005
    Date of Patent: June 14, 2011
    Assignees: IMEC, Umicore NV
    Inventors: Niels Posthuma, Giovanni Flamand, Jef Poortmans
  • Patent number: 7960246
    Abstract: Methods for manufacturing electronic devices and devices produced by those methods are disclosed. One such method includes releasably bonding a first surface of a device substrate to a face of a first carrier substrate using a first bonding agent to produce a first composite substrate, where the face of the first carrier substrate includes a pattern of trenches. The method also includes processing the device substrate to manufacture an electronic device on a second surface of the device substrate. The method further includes releasing the device substrate from the first carrier substrate by a releasing agent.
    Type: Grant
    Filed: June 6, 2005
    Date of Patent: June 14, 2011
    Assignees: IMEC, UMICORE
    Inventors: Giovanni Flamand, Wim Geens, Jef Poortmans
  • Publication number: 20070227589
    Abstract: A method is disclosed for passivating and contacting a surface of a germanium substrate. A passivation layer of amorphous silicon material is formed on the germanium surface. A contact layer of metal is then formed on the passivation. The structure is heated so that the germanium surface makes contact with the contact layer. Thus, a passivated germanium surface is disclosed, as well as a solar cell comprising such a structure.
    Type: Application
    Filed: October 7, 2005
    Publication date: October 4, 2007
    Inventors: Niels Posthuma, Giovanni Flamand, Jef Poortmans
  • Publication number: 20060207651
    Abstract: A method is disclosed for passivating and contacting a surface of a germanium substrate. A passivation layer of amorphous silicon material is formed on the germanium surface. A contact layer of metal, e.g., aluminum, is then formed on the passivation layer. The structure is heated so that the germanium surface makes contact with the contact layer. The aluminum contact layer can be configured for use as a mirroring surface for the back surface of the device. Thus, a passivated germanium surface is disclosed, as well as a solar cell comprising such a structure.
    Type: Application
    Filed: January 26, 2006
    Publication date: September 21, 2006
    Inventors: Niels Posthuma, Giovanni Flamand, Jef Poortmans, Johan van der Heide
  • Publication number: 20050272222
    Abstract: Methods for manufacturing electronic devices and devices produced by those methods are disclosed. One such method includes releasably bonding a first surface of a device substrate to a face of a first carrier substrate using a first bonding agent to produce a first composite substrate, where the face of the first carrier substrate includes a pattern of trenches. The method also includes processing the device substrate to manufacture an electronic device on a second surface of the device substrate. The method further includes releasing the device substrate from the first carrier substrate by a releasing agent.
    Type: Application
    Filed: June 6, 2005
    Publication date: December 8, 2005
    Applicants: Interuniversitair Microelektronica Centrum (IMEC), Umicore
    Inventors: Giovanni Flamand, Wim Geens, Jef Poortmans
  • Publication number: 20050000566
    Abstract: A method is disclosed for passivating and contacting a surface of a germanium substrate. A passivation layer of amorphous silicon material is formed on the germanium surface. A contact layer of metal is then formed on the passivation. The structure is heated so that the germanium surface makes contact with the contact layer. Thus, a passivated germanium surface is disclosed, as well as a solar cell comprising such a structure.
    Type: Application
    Filed: May 6, 2004
    Publication date: January 6, 2005
    Inventors: Niels Posthuma, Giovanni Flamand, Jef Poortmans
  • Publication number: 20030216043
    Abstract: The present invention relates to a layer stack comprising a monocrystalline layer located upon a porous surface of a substrate, said monocrystalline layer and said substrate being significantly lattice mismatched, obtainable by a process comprising a sublimation or an evaporation step by emission from a source and an incomplete filling step of said porous surface by said sublimated or evaporated emission.
    Type: Application
    Filed: February 27, 2003
    Publication date: November 20, 2003
    Inventors: Giovanni Flamand, Jef Poortmans
  • Patent number: 6602760
    Abstract: A method of producing a semiconductor layer onto a semiconductor substrate. The method comprises providing a first semiconductor substrate, and providing a second semiconductor substrate. The method also comprises producing a porous layer, which has a porosity profile, on top of the first semiconductor substrate, and producing a porous layer, which has a porosity profile, on top of the second semiconductor substrate. The method further comprises bringing the porous layer of the second substrate into contact with the porous layer of the first substrate, so as to form a bond between the two substrates, performing a thermal annealing step, and lifting off of the second substrate, leaving a layer of the second substrate's semiconductor material attached to the first substrate.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: August 5, 2003
    Assignees: Interuniversitair Microelektronica Centrum (IMEC), Umicore
    Inventors: Jef Poortmans, Giovanni Flamand, Renat Bilyalov
  • Publication number: 20020106882
    Abstract: A method of producing a semiconductor layer onto a semiconductor substrate, comprising the steps of:
    Type: Application
    Filed: December 19, 2001
    Publication date: August 8, 2002
    Inventors: Jef Poortmans, Giovanni Flamand, Renat Bilyalov