Patents by Inventor Nathan Stoddard

Nathan Stoddard 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: 11885036
    Abstract: A ribbon is formed such that the ribbon floats on a melt using a cold initializer facing an exposed surface of the melt. The ribbon is single crystal silicon. The ribbon is pulled from the silicon melt at a low angle off the melt surface. The ribbon is formed at a same rate as the pulling. The ribbon is separated from the melt at a wall of the crucible where a stable meniscus forms. The ribbon has a thickness between a first surface and an opposite second surface from 50 ?m to 5 mm. The ribbon includes a first region extending a first depth from the first surface. The first region has a reduced oxygen concentration relative to a bulk of the ribbon.
    Type: Grant
    Filed: August 9, 2020
    Date of Patent: January 30, 2024
    Inventors: Jesse S. Appel, Alison Greenlee, Nathan Stoddard, Peter Kellerman, Parthiv Daggolu, Alexander Martinez, Saeed Pirooz, Brandon Williard, Charles Bowen, Brian McMullen, David Morrell, Dawei Sun
  • Publication number: 20230332332
    Abstract: An apparatus for growing a crystal includes a growth chamber and a melt chamber thermally isolated from the growth chamber. The growth chamber includes: a growth crucible configured to contain a liquid melt; and a die located in the growth crucible, the die having a die opening and one or more capillaries extending from within the growth crucible toward the die opening. The melt chamber includes: a melt crucible configured to receive feedstock material; and at least one heating element positioned within the melt chamber relative to the melt crucible to melt the feedstock material within the melt crucible to form the liquid melt. The apparatus also includes at least one capillary conveyor in fluid communication with the melt crucible and the growth crucible to transport the liquid melt from the melt crucible to the growth crucible.
    Type: Application
    Filed: June 23, 2023
    Publication date: October 19, 2023
    Inventor: Nathan STODDARD
  • Patent number: 11761119
    Abstract: A die for growing a single crystal by an Edge-defined Film-fed Growth (EFG) technique includes a first outer die plate; a second outer die plate; and at least one central die plate positioned between the first outer die plate and the second outer die plate such that at least two capillaries are formed between the first outer die plate and the second outer die plate. First ends of the first outer die plate and the second outer die plate have a slope extending away from at least one of the at least two capillaries to form a growth interface at a top of the die. Second ends of the first outer die plate and the second outer die plate are immersed in a raw material melt provided in a crucible. The raw material melt is configured to travel to the growth interface by capillary flow of the raw material melt through the at least two capillaries.
    Type: Grant
    Filed: February 4, 2022
    Date of Patent: September 19, 2023
    Assignee: II-VI DELAWARE, INC.
    Inventors: Nathan Stoddard, Melissa Seitz
  • Patent number: 11725304
    Abstract: An apparatus for growing a crystal includes a growth chamber and a melt chamber thermally isolated from the growth chamber. The growth chamber includes: a growth crucible configured to contain a liquid melt; and a die located in the growth crucible, the die having a die opening and one or more capillaries extending from within the growth crucible toward the die opening. The melt chamber includes: a melt crucible configured to receive feedstock material; and at least one heating element positioned within the melt chamber relative to the melt crucible to melt the feedstock material within the melt crucible to form the liquid melt. The apparatus also includes at least one capillary conveyor in fluid communication with the melt crucible and the growth crucible to transport the liquid melt from the melt crucible to the growth crucible.
    Type: Grant
    Filed: January 4, 2022
    Date of Patent: August 15, 2023
    Assignee: II-VI DELAWARE, INC.
    Inventor: Nathan Stoddard
  • Patent number: 11728451
    Abstract: A solar module includes a laminate structure having at least two solar cells. Each of the solar cells has an individual reinforcement laminated to one face of each of the solar cells. The solar cells are spaced apart from each other and the individual reinforcements are spaced apart from each other such that a gap is defined between each of the solar cells. The solar module includes flexible conductors that extend through the gap between the solar cells and electrically connect the solar cells to each other.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: August 15, 2023
    Assignee: MAXEON SOLAR PTE. LTD.
    Inventors: Nathan Stoddard, Mukesh Dulani
  • Publication number: 20230099939
    Abstract: An apparatus for controlling a thickness of a crystalline ribbon grown on a surface of a melt includes a crucible configured to hold a melt; a cold initializer facing an exposed surface of the melt; a segmented cooled thinning controller disposed above the crucible on a side of the crucible with the cold initializer; and a uniform melt-back heater disposed below of the crucible opposite the cooled thinning controller. Heat is applied to the ribbon through the melt using a uniform melt-back heater disposed below the melt. Cooling is applied to the ribbon using a segmented cooled thinning controller facing the crystalline ribbon above the melt.
    Type: Application
    Filed: February 19, 2021
    Publication date: March 30, 2023
    Inventors: Peter KELLERMAN, Alison GREENLEE, Parthiv DAGGOLU, Alexander MARTINEZ, Nathan STODDARD
  • Publication number: 20220325438
    Abstract: A single crystal silicon wafer has a thickness between a first surface and an opposite second surface from 50 ?m to 300 ?m. The wafer includes a first region extending a first depth from the first surface. The first region has a reduced oxygen concentration relative to an adjacent region of the wafer. The wafer has a bulk minority carrier lifetime greater than 100 ?s.
    Type: Application
    Filed: August 9, 2020
    Publication date: October 13, 2022
    Inventors: Jesse S. Appel, Alison Greenlee, Nathan Stoddard, Peter Kellerman, Parthiv Daggolu, Alexander Martinez, Saeed Pirooz
  • Publication number: 20220316087
    Abstract: A ribbon is formed such that the ribbon floats on a melt using a cold initializer facing an exposed surface of the melt. The ribbon is single crystal silicon. The ribbon is pulled from the silicon melt at a low angle off the melt surface. The ribbon is formed at a same rate as the pulling. The ribbon is separated from the melt at a wall of the crucible where a stable meniscus forms. The ribbon has a thickness between a first surface and an opposite second surface from 50 ?m to 5 mm. The ribbon includes a first region extending a first depth from the first surface. The first region has a reduced oxygen concentration relative to a bulk of the ribbon.
    Type: Application
    Filed: August 9, 2020
    Publication date: October 6, 2022
    Inventors: Alison Greenlee, Nathan Stoddard, Jesse S. Appel, Peter Kellerman, Parthiv Daggolu, Alexander Martinez, Saeed Pirooz, Brandon Williard, Charles Bowen, Brian McMullen, David Morrell, Dawei SUN
  • Patent number: 11463044
    Abstract: Corner connection members for a photovoltaic module frame include thru-passages for receiving insert components that perform and facilitate a variety of functions, such as attaching the photovoltaic module to a roof, providing a ground connection for the solar cells, to facilitate the mechanical and electrical connection of photovoltaic modules which are arranged side-by-side, to facilitate securing photovoltaic modules in a stack, and providing mechanical and electrical connections to adjacent photovoltaic modules in an array. Insert components may also include electronic devices, such as microinverters and energy storage devices, which are connected to the photovoltaic modules when the insert component is installed in the corner member.
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: October 4, 2022
    Assignee: SUNPOWER CORPORATION
    Inventors: Beryl Weinshenker, Nathan Stoddard, Steve Sefchick, Eric Olson
  • Publication number: 20220162772
    Abstract: A die for growing a single crystal by an Edge-defined Film-fed Growth (EFG) technique includes a first outer die plate; a second outer die plate; and at least one central die plate positioned between the first outer die plate and the second outer die plate such that at least two capillaries are formed between the first outer die plate and the second outer die plate. First ends of the first outer die plate and the second outer die plate have a slope extending away from at least one of the at least two capillaries to form a growth interface at a top of the die. Second ends of the first outer die plate and the second outer die plate are immersed in a raw material melt provided in a crucible. The raw material melt is configured to travel to the growth interface by capillary flow of the raw material melt through the at least two capillaries.
    Type: Application
    Filed: February 4, 2022
    Publication date: May 26, 2022
    Inventors: Nathan Stoddard, Melissa Seitz
  • Publication number: 20220145494
    Abstract: A system for producing a ribbon from a melt includes a crucible to contain a melt and a cold block. The cold block has a surface that directly faces an exposed surface of the melt. A ribbon is formed on the melt using the cold block. A furnace is operatively connected to the crucible. The ribbon passes through the furnace after removal from the melt. The furnace includes at least one gas jet. The gas jet can dope the ribbon, form a diffusion barrier on the ribbon, and/or passivate the ribbon. Part of the ribbon passes through the furnace while part of the ribbon is being formed in the crucible using the cold block.
    Type: Application
    Filed: May 12, 2020
    Publication date: May 12, 2022
    Inventors: Alison GREENLEE, Jesse S. APPEL, Nathan STODDARD
  • Publication number: 20220127753
    Abstract: An apparatus for growing a crystal includes a growth chamber and a melt chamber thermally isolated from the growth chamber. The growth chamber includes: a growth crucible configured to contain a liquid melt; and a die located in the growth crucible, the die having a die opening and one or more capillaries extending from within the growth crucible toward the die opening. The melt chamber includes: a melt crucible configured to receive feedstock material; and at least one heating element positioned within the melt chamber relative to the melt crucible to melt the feedstock material within the melt crucible to form the liquid melt. The apparatus also includes at least one capillary conveyor in fluid communication with the melt crucible and the growth crucible to transport the liquid melt from the melt crucible to the growth crucible.
    Type: Application
    Filed: January 4, 2022
    Publication date: April 28, 2022
    Inventor: Nathan Stoddard
  • Patent number: 11274379
    Abstract: A die for growing a single crystal by an Edge-defined Film-fed Growth (EFG) technique includes a first outer die plate; a second outer die plate; and at least one central die plate positioned between the first outer die plate and the second outer die plate such that at least two capillaries are formed between the first outer die plate and the second outer die plate. First ends of the first outer die plate and the second outer die plate have a slope extending away from at least one of the at least two capillaries to form a growth interface at a top of the die. Second ends of the first outer die plate and the second outer die plate are immersed in a raw material melt provided in a crucible. The raw material melt is configured to travel to the growth interface by capillary flow of the raw material melt through the at least two capillaries.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: March 15, 2022
    Assignee: II-VI DELAWARE, INC.
    Inventors: Nathan Stoddard, Melissa Seitz
  • Patent number: 11248312
    Abstract: An apparatus for growing a crystal includes a growth chamber and a melt chamber thermally isolated from the growth chamber. The growth chamber includes: a growth crucible configured to contain a liquid melt; and a die located in the growth crucible, the die having a die opening and one or more capillaries extending from within the growth crucible toward the die opening. The melt chamber includes: a melt crucible configured to receive feedstock material; and at least one heating element positioned within the melt chamber relative to the melt crucible to melt the feedstock material within the melt crucible to form the liquid melt. The apparatus also includes at least one capillary conveyor in fluid communication with the melt crucible and the growth crucible to transport the liquid melt from the melt crucible to the growth crucible.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: February 15, 2022
    Assignee: II-VI DELAWARE, INC.
    Inventor: Nathan Stoddard
  • Publication number: 20210262120
    Abstract: A die for growing a single crystal by an Edge-defined Film-fed Growth (EFG) technique includes a first outer die plate; a second outer die plate; and at least one central die plate positioned between the first outer die plate and the second outer die plate such that at least two capillaries are formed between the first outer die plate and the second outer die plate. First ends of the first outer die plate and the second outer die plate have a slope extending away from at least one of the at least two capillaries to form a growth interface at a top of the die. Second ends of the first outer die plate and the second outer die plate are immersed in a raw material melt provided in a crucible. The raw material melt is configured to travel to the growth interface by capillary flow of the raw material melt through the at least two capillaries.
    Type: Application
    Filed: February 26, 2020
    Publication date: August 26, 2021
    Inventors: Nathan Stoddard, Melissa Seitz
  • Publication number: 20210156047
    Abstract: An apparatus for growing a crystal includes a growth chamber and a melt chamber thermally isolated from the growth chamber. The growth chamber includes: a growth crucible configured to contain a liquid melt; and a die located in the growth crucible, the die having a die opening and one or more capillaries extending from within the growth crucible toward the die opening. The melt chamber includes: a melt crucible configured to receive feedstock material; and at least one heating element positioned within the melt chamber relative to the melt crucible to melt the feedstock material within the melt crucible to form the liquid melt. The apparatus also includes at least one capillary conveyor in fluid communication with the melt crucible and the growth crucible to transport the liquid melt from the melt crucible to the growth crucible.
    Type: Application
    Filed: November 25, 2019
    Publication date: May 27, 2021
    Inventor: Nathan Stoddard
  • Publication number: 20190305160
    Abstract: A solar module includes a laminate structure having at least two solar cells. Each of the solar cells has an individual reinforcement laminated to one face of each of the solar cells. The solar cells are spaced apart from each other and the individual reinforcements are spaced apart from each other such that a gap is defined between each of the solar cells. The solar module includes flexible conductors that extend through the gap between the solar cells and electrically connect the solar cells to each other.
    Type: Application
    Filed: June 19, 2019
    Publication date: October 3, 2019
    Applicant: SunPower Corporation
    Inventors: Nathan Stoddard, Mukesh Dulani
  • Patent number: 10421208
    Abstract: A method for cleaving wafers comprising the following steps: providing a slice of a crystalline material with at least a first plane side, providing at least one stressing means to be attached to said slice, wherein said at least one stressing means is at least in parts made of a material with a coefficient of thermal expansion different from that of the slice, attaching said stressing means to said first plane side of said slice to form a stack, inducing a thermal shear stress to said slice by applying a temperature change to said stack.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: September 24, 2019
    Assignee: SUNPOWER CORPORATION
    Inventors: Nathan Stoddard, Bjoern Seipel
  • Patent number: 10381498
    Abstract: A solar module includes a laminate structure having at least two solar cells. Each of the solar cells has an individual reinforcement laminated to one face of each of the solar cells. The solar cells are spaced apart from each other and the individual reinforcements are spaced apart from each other such that a gap is defined between each of the solar cells. The solar module includes flexible conductors that extend through the gap between the solar cells and electrically connect the solar cells to each other.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: August 13, 2019
    Assignee: SUNPOWER CORPORATION
    Inventors: Nathan Stoddard, Mukesh Dulani
  • Patent number: 10355152
    Abstract: A solar module includes a laminate structure having at least two solar cells. Each of the solar cells has an individual reinforcement laminated to one face of each of the solar cells. The solar cells are spaced apart from each other and the individual reinforcements are spaced apart from each other such that a gap is defined between each of the solar cells. The solar module includes flexible conductors that extend through the gap between the solar cells and electrically connect the solar cells to each other.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: July 16, 2019
    Assignee: Sunpower Corporation
    Inventors: Nathan Stoddard, Mukesh Dulani