Patents by Inventor Karel Vanheusden

Karel Vanheusden 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: 20110012066
    Abstract: A Group IV based nanoparticle fluid is disclosed. The nanoparticle fluid includes a set of nanoparticles-comprising a set of Group IV atoms, wherein the set of nanoparticles is present in an amount of between about 1 wt % and about 20 wt % of the nanoparticle fluid. The nanoparticle fluid also includes a set of HMW molecules, wherein the set of HMW molecules is present in an amount of between about 0 wt % and about 5 wt % of the nanoparticle fluid. The nanoparticle fluid further includes a set of capping agent molecules, wherein at least some capping agent molecules of the set of capping agent molecules are attached to the set of nanoparticles.
    Type: Application
    Filed: September 24, 2010
    Publication date: January 20, 2011
    Inventors: Hyungrak Kim, Malcolm Abbott, Andreas Meisel, Elizabeth Tai, Augustus Jones, Dmitry Poplavskyy, Karel Vanheusden
  • Publication number: 20110003466
    Abstract: A method of forming a multi-doped junction on a substrate is disclosed. The method includes providing the substrate doped with boron atoms, the substrate comprising a front crystalline substrate surface; and forming a mask on the front crystalline substrate surface, the mask comprising exposed mask areas and non-exposed mask areas. The method also includes exposing the mask to an etchant, wherein porous silicon is formed on the front crystalline substrate surface defined by the exposed mask areas; and removing the mask. The method further includes exposing the substrate to a dopant source in a diffusion furnace with a deposition ambient, the deposition ambient comprising POCl3 gas, at a first temperature and for a first time period, wherein a PSG layer is formed on the front substrate surface; and heating the substrate in a drive-in ambient to a second temperature and for a second time period.
    Type: Application
    Filed: June 4, 2010
    Publication date: January 6, 2011
    Inventors: Giuseppe Scardera, Homer Antoniadis, Nick Cravalho, Maxim Kelman, Elena Rogojina, Karel Vanheusden
  • Publication number: 20100275982
    Abstract: A device for generating electricity from solar radiation is disclosed. The device includes a wafer doped with a first dopant, the wafer including a front-side and a back-side, wherein the front-side is configured to be exposed to the solar radiation. The device also includes a fused Group IV nanoparticle thin film deposited on the front-side, wherein the nanoparticle thin film includes a second dopant, wherein the second dopant is a counter dopant. The device further includes a first electrode deposited on the nanoparticle thin film, and a second electrode deposited on the back-side, wherein when solar radiation is applied to the front-side, an electrical current is produced.
    Type: Application
    Filed: February 12, 2008
    Publication date: November 4, 2010
    Inventors: Malcolm Abbott, Maxim Kelman, Francesco Lemmi, Andreas Meisel, Dmitry Poplavskyy, Mason Terry, Karel Vanheusden
  • Patent number: 7824466
    Abstract: Processes for the production of metal nanoparticles. In one aspect, the invention is to a process comprising the steps of mixing a heated first solution comprising a base and/or a reducing agent (e.g., a non-polyol reducing agent), a polyol, and a polymer of vinyl pyrrolidone with a second solution comprising a metal precursor that is capable of being reduced to a metal by the polyol. In another aspect, the invention is to a process that includes the steps of heating a powder of a polymer of vinyl pyrrolidone; forming a first solution comprising the powder and a polyol; and mixing the first solution with a second solution comprising a metal precursor capable of being reduced to a metal by the polyol.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: November 2, 2010
    Assignee: Cabot Corporation
    Inventors: Karel Vanheusden, Klaus Kunze, Hyungrak Kim, Aaron D. Stump, Allen B. Schult, Mark J. Hampden-Smith, Chuck Edwards, Anthony R. James, James Caruso, Toivo T. Kodas, Scott T. Haubrich, Mark H. Kowalski, Nathan E. Stott
  • Publication number: 20100269635
    Abstract: Processes for the production of metal nanoparticles. In one aspect, the invention is to a process comprising the steps of mixing a heated first solution comprising a base and/or a reducing agent (e.g., a non-polyol reducing agent), a polyol, and a polymer of vinyl pyrrolidone with a second solution comprising a metal precursor that is capable of being reduced to a metal by the polyol. In another aspect, the invention is to a process that includes the steps of heating a powder of a polymer of vinyl pyrrolidone; forming a first solution comprising the powder and a polyol; and mixing the first solution with a second solution comprising a metal precursor capable of being reduced to a metal by the polyol.
    Type: Application
    Filed: July 2, 2010
    Publication date: October 28, 2010
    Applicant: CABOT CORPORATION
    Inventors: Karel VANHEUSDEN, Klaus KUNZE, Hyungrak KIM, Aaron D. STUMP, Allen B. Schult, Mark J. Hampden-Smith, Chuck EDWARDS, Anthony R. JAMES, James CARUSO, Toivo T. KODAS, Scott T. HAUBRICH, Mark H. KOWALSKI, Nathan E. STOTT
  • Publication number: 20100269634
    Abstract: A process for the production of metal nanoparticles. The process comprises a rapid mixing of a solution of at least about 0.1 mole of a metal compound that is capable of being reduced to a metal by a polyol with a heated solution of a polyol and a substance that is capable of being adsorbed on the nanoparticles.
    Type: Application
    Filed: July 2, 2010
    Publication date: October 28, 2010
    Applicant: CABOT CORPORATION
    Inventors: Karel Vanheusden, Klaus Kunze, Hyungrak Kim, Aaron D. Stump, Allen B. Schult, Mark J. Hampden-Smith, Chuck Edwards, Anthony R. James, James Caruso, Toivo T. Kodas, Scott Thomas Haubrich, Mark H. Kowalski
  • Publication number: 20100178718
    Abstract: A method for optimizing a solar cell manufacturing process is described. The method includes determining a reference finger spacing value and a reference bulk lifetime for the solar cell manufacturing process. The method also includes measuring an actual bulk lifetime of a wafer with an in-line measurement tool. The method further includes calculating an optimal finger spacing value with a computer coupled to the in-line measurement tool, the optimal finger spacing value being the product of the reference finger spacing value and a square root of the actual bulk lifetime divided by the square root of the reference bulk lifetime. The method further includes forming a junction on the wafer, and depositing a set of busbars and a set of fingers on the wafer with a metal deposition device, wherein a distance between a first finger and a second finger of the set of fingers is about the optimal finger spacing value.
    Type: Application
    Filed: January 13, 2009
    Publication date: July 15, 2010
    Inventors: Maxim Kelman, Karel Vanheusden
  • Patent number: 7749299
    Abstract: A process for the production of metal nanoparticles. The process comprises a rapid mixing of a solution of at least about 0.1 mole of a metal compound that is capable of being reduced to a metal by a polyol with a heated solution of a polyol and a substance that is capable of being adsorbed on the nanoparticles.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: July 6, 2010
    Assignee: Cabot Corporation
    Inventors: Karel Vanheusden, Klaus Kunze, Hyungrak Kiim, Aaron D. Stump, Allen B. Schult, Mark J. Hampden-Smith, Chuck Edwards, Anthony R. James, James Caruso, Toivo T. Kodas, Scott Thomas Haubrich, Mark H. Kowalski
  • Patent number: 7732002
    Abstract: Precursor compositions in the form of a tape that can be transferred to a substrate and converted to an electronic feature at a relatively low temperature, such as not greater than about 200° C. The tape composition can be disposed on a carrier to form a ribbon structure that is flexible and can be handled in a variety of industrial processes.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: June 8, 2010
    Assignee: Cabot Corporation
    Inventors: Toivo T. Kodas, Mark J. Hampden-Smith, Karel Vanheusden, Hugh Denham, Aaron D. Stump, Allen B. Schult, Paolina Atanassova, Klaus Kunze
  • Publication number: 20100136771
    Abstract: A Group IV based nanoparticle fluid is disclosed. The nanoparticle fluid includes a set of nanoparticles—comprising a set of Group IV atoms, wherein the set of nanoparticles is present in an amount of between about 1 wt % and about 20 wt % of the nanoparticle fluid. The nanoparticle fluid also includes a set of HMW molecules, wherein the set of HMW molecules is present in an amount of between about 0 wt % and about 5 wt % of the nanoparticle fluid. The nanoparticle fluid further includes a set of capping agent molecules, wherein at least some capping agent molecules of the set of capping agent molecules are attached to the set of nanoparticles.
    Type: Application
    Filed: June 29, 2009
    Publication date: June 3, 2010
    Inventors: Hyungrak Kim, Malcolm Abbott, Andreas Meisel, Elizabeth Tai, Augustus Jones, Dmitry Poplavskyy, Karel Vanheusden
  • Patent number: 7727901
    Abstract: A method of forming an ink, the ink configured to form a conductive densified film is disclosed. The method includes providing a set of Group IV semiconductor particles, wherein each Group IV semiconductor particle of the set of Group IV semiconductor particles includes a particle surface with a first exposed particle surface area. The method also includes reacting the set of Group IV semiconductor particles to a set of bulky capping agent molecules resulting in a second exposed particle surface area, wherein the second exposed particle surface area is less than the first exposed particle surface area. The method further includes dispersing the set of Group IV semiconductor particles in a vehicle, wherein the ink is formed.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: June 1, 2010
    Assignee: Innovalight, Inc.
    Inventors: Elena V. Rogojina, Manikandan Jayaraman, Karel Vanheusden
  • Patent number: 7718707
    Abstract: A set of nanoparticles is disclosed. Each nanoparticle of the set of nanoparticles is comprised of a set of Group IV atoms arranged in a substantially spherical configuration. Each nanoparticle of the set of nanoparticles further having a sphericity of between about 1.0 and about 2.0; a diameter of between about 4 nm and about 100 nm; and a sintering temperature less than a melting temperature of the set of Group IV atoms.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: May 18, 2010
    Assignee: Innovalight, Inc.
    Inventors: Maxim Kelman, Xuegeng Li, Pingrong Yu, Karel Vanheusden, David Jurbergs
  • Publication number: 20100112195
    Abstract: Precursor compositions in the form of a tape that can be transferred to a substrate and converted to an electronic feature at a relatively low temperature, such as not greater than about 200° C. The tape composition can be disposed on a carrier to form a ribbon structure that is flexible and can be handled in a variety of industrial processes.
    Type: Application
    Filed: October 18, 2002
    Publication date: May 6, 2010
    Inventors: Toivo T. Kodas, Mark J. Hampden-Smith, Karel Vanheusden, Hugh Denham, Aaron D. Stump, Allen B. Schult, Paolina Atanassova, Klaus Kunze
  • Patent number: 7704866
    Abstract: A method for forming a contact to a substrate is disclosed. The method includes providing a substrate, the substrate being doped with a first dopant; and diffusing a second dopant into at least a first side of the substrate to form a second dopant region, the first side further including a first side surface area. The method also includes forming a dielectric layer on the first side of the substrate. The method further includes forming a set of composite layer regions on the dielectric layer, wherein each composite layer region of the set of composite layer regions further includes a set of Group IV semiconductor nanoparticles and a set of metal particles. The method also includes heating the set of composite layer regions to a first temperature, wherein at least some composite layer regions of the set of composite layer regions etch through the dielectric layer and form a set of contacts with the second dopant region.
    Type: Grant
    Filed: March 18, 2008
    Date of Patent: April 27, 2010
    Assignee: Innovalight, Inc.
    Inventors: Karel Vanheusden, Francesco Lemmi, Dmitry Poplavskyy, Mason Terry, Malcolm Abbott
  • Patent number: 7691664
    Abstract: A precursor composition for the deposition and formation of an electrical feature such as a conductive feature. The precursor composition advantageously has a low viscosity enabling deposition using direct-write tools. The precursor composition also has a low conversion temperature, enabling the deposition and conversion to an electrical feature on low temperature substrates. A particularly preferred precursor composition includes silver metal for the formation of highly conductive silver features.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: April 6, 2010
    Assignee: Cabot Corporation
    Inventors: Toivo T. Kodas, Mark J. Hampden-Smith, Karel Vanheusden, Hugh Denham, Aaron D. Stump, Allen B. Schult, Paolina Atanassova, Klaus Kunze
  • Publication number: 20100034986
    Abstract: A precursor composition for the deposition and formation of an electrical feature such as a conductive feature. The precursor composition advantageously has a low viscosity enabling deposition using direct-write tools. The precursor composition also has a low conversion temperature, enabling the deposition and conversion to an electrical feature on low temperature substrates. A particularly preferred precursor composition includes silver metal for the formation of highly conductive silver features.
    Type: Application
    Filed: December 21, 2006
    Publication date: February 11, 2010
    Applicant: Cabot Corporation
    Inventors: Toivo T. Kodas, Mark J. Hampden-Smith, Karel Vanheusden, Hugh Denham, Aaron D. Stump, Allen B. Schult, Paolina Atanassova, Klaus Kunze
  • Publication number: 20090325336
    Abstract: A method of printing an ink on a wafer surface configured with a set of non-rounded peaks and a set of non-rounded valleys is disclosed. The method includes exposing the wafer including at least some non-rounded peaks and at least some of the non-rounded valleys in a region to an etchant. The method further includes depositing the ink on the region, wherein a set of rounded peaks and a set of rounded valleys are formed.
    Type: Application
    Filed: April 24, 2008
    Publication date: December 31, 2009
    Inventors: Malcolm Abbott, Maxim Kelman, Karel Vanheusden
  • Patent number: 7629017
    Abstract: A precursor composition for the deposition and formation of an electrical feature such as a conductive feature. The precursor composition advantageously has a low viscosity enabling deposition using direct-write tools. The precursor composition also has a low conversion temperature, enabling the deposition and conversion to an electrical feature on low temperature substrates. A particularly preferred precursor composition includes copper metal for the formation of highly conductive copper features.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: December 8, 2009
    Assignee: Cabot Corporation
    Inventors: Toivo T. Kodas, Mark J. Hampden-Smith, Karel Vanheusden, Hugh Denham, Aaron D. Stump, Allen B. Schult, Paolina Atanassova, Klaus Kunze
  • Publication number: 20090255222
    Abstract: A particle collection apparatus is disclosed. The apparatus includes a baghouse housing comprising an entrance port, a collection port, a baghouse configured between the entrance port and the collection port, and a vacuum port coupled to the baghouse. The apparatus also includes a collection mechanism coupled to the collection port; and, a compression mechanism coupled to the baghouse.
    Type: Application
    Filed: April 15, 2009
    Publication date: October 15, 2009
    Inventors: Raul Cortez, Xuegeng Li, Christopher Alcantara, Karel Vanheusden
  • Publication number: 20090239330
    Abstract: A method for forming a contact to a substrate is disclosed. The method includes providing a substrate, the substrate being doped with a first dopant; and diffusing a second dopant into at least a first side of the substrate to form a second dopant region, the first side further including a first side surface area. The method also includes forming a dielectric layer on the first side of the substrate. The method further includes forming a set of composite layer regions on the dielectric layer, wherein each composite layer region of the set of composite layer regions further includes a set of Group IV semiconductor nanoparticles and a set of metal particles. The method also includes heating the set of composite layer regions to a first temperature, wherein at least some composite layer regions of the set of composite layer regions etch through the dielectric layer and form a set of contacts with the second dopant region.
    Type: Application
    Filed: March 18, 2008
    Publication date: September 24, 2009
    Inventors: Karel Vanheusden, Francesco Lemmi, Dmitry Poplavskyy, Mason Terry, Malcolm Abbott