Patents by Inventor Harold John Hovel

Harold John Hovel 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: 10693025
    Abstract: A solar cell panel with a bottom cover plate and an electrically conductive bus bar. A top cover plate having at least one electrically conductive land in communication with a bottom surface of the top cover plate. The land having a height extending from the bottom surface of the top cover plate. An array of rows and columns of solar cell chips lying between the bottom cover plate and the top cover plate. Each solar cell chip of the array having an anode adjacent to a top surface and a cathode adjacent to a bottom surface. The bus bar in electrical communication with each cathode of each solar cell chip of the array. Each land in electrical contact with each anode of a solar cell chip of the array. An opening formed between adjacent lands wherein the opening extends at least the height of the lands.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: June 23, 2020
    Assignee: International Business Machines Corporation
    Inventors: Harold John Hovel, Rainer Klaus Krause, Xiaoyan Shao, Steven Erik Steen
  • Publication number: 20190288146
    Abstract: A solar cell having n-type and p-type interdigitated back contacts (IBCs), which cover the entire back surface of the absorber layer. The spatial separation of the IBCs is in a direction perpendicular to the back surface, thus providing borderless contacts having a zero-footprint separation. As the contacts are on the back, photons incident on the cell's front surface can be absorbed without any shadowing.
    Type: Application
    Filed: June 3, 2019
    Publication date: September 19, 2019
    Applicant: International Business Machines Corporation
    Inventors: Joel P. De Souza, Harold John Hovel, Daniel Inns, Jeehwan Kim, Christian Lavoie, Devendra K. Sadana, Katherine L. Saenger, Davood Shahrjerdi, Zhen Zhang
  • Publication number: 20170133533
    Abstract: A solar cell panel with a bottom cover plate and an electrically conductive bus bar. A top cover plate having at least one electrically conductive land in communication with a bottom surface of the top cover plate. The land having a height extending from the bottom surface of the top cover plate. An array of rows and columns of solar cell chips lying between the bottom cover plate and the top cover plate. Each solar cell chip of the array having an anode adjacent to a top surface and a cathode adjacent to a bottom surface. The bus bar in electrical communication with each cathode of each solar cell chip of the array. Each land in electrical contact with each anode of a solar cell chip of the array. An opening formed between adjacent lands wherein the opening extends at least the height of the lands.
    Type: Application
    Filed: January 10, 2017
    Publication date: May 11, 2017
    Applicant: International Business Machines Corporation
    Inventors: Harold John Hovel, Rainer Klaus Krause, Xiaoyan Shao, Steven Erik Steen
  • Patent number: 9583658
    Abstract: A solar cell panel and method of forming a solar cell panel. The method includes a: forming an electrically conductive bus bar on a top surface of a bottom cover plate; forming an electrically conductive contact frame proximate to a bottom surface of a top cover plate, the top cover plate transparent to visible light; and placing an array of rows and columns of solar cell chips between the bottom cover plate and the top cover plate, each solar cell chip of the array of solar cell chips comprising an anode adjacent to a top surface and a cathode adjacent to a bottom surface of the solar cell chip, the bus bar electrically contacting each cathode of each solar cell chip of the array of solar cell chips and the contact frame contacting each anode of each solar cell chip of the array of solar cell chips.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: February 28, 2017
    Assignee: International Business Machines Corporation
    Inventors: Harold John Hovel, Rainer Klaus Krause, Xiaoyan Shao, Steven Erik Steen
  • Patent number: 9324872
    Abstract: A gate dielectric material and a gate conductor portion are formed on a single-crystal semiconductor material of a substrate. A dielectric structure is then formed surrounding the gate conductor portion and thereafter a stressor layer is formed on the dielectric structure. A controlled spalling process is then performed and thereafter a material removal process can be used to expose a surface of the single-crystal semiconductor material. A source region and a drain region are then formed on the exposed surface of the single-crystal semiconductor material, which exposed surface is opposite the surface including the gate dielectric.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: April 26, 2016
    Assignee: International Business Machines Corporation
    Inventors: Stephen W. Bedell, Bahman Hekmatshoartabari, Harold John Hovel, Ning Li, Devendra K. Sadana
  • Publication number: 20150243796
    Abstract: A gate dielectric material and a gate conductor portion are formed on a single-crystal semiconductor material of a substrate. A dielectric structure is then formed surrounding the gate conductor portion and thereafter a stressor layer is formed on the dielectric structure. A controlled spalling process is then performed and thereafter a material removal process can be used to expose a surface of the single-crystal semiconductor material. A source region and a drain region are then formed on the exposed surface of the single-crystal semiconductor material, which exposed surface is opposite the surface including the gate dielectric.
    Type: Application
    Filed: February 18, 2015
    Publication date: August 27, 2015
    Inventors: Stephen W. Bedell, Bahman Hekmatshoartabari, Harold John Hovel, Ning Li, Devendra K. Sadana
  • Patent number: 8853524
    Abstract: A solar cell and method of fabrication are disclosed. In one embodiment of the present invention, the method comprises depositing a first doped amorphous silicon layer on a first surface of a silicon substrate, depositing a second doped amorphous silicon layer on the first surface of the silicon substrate. The second doped amorphous silicon layer is doped oppositely from the first doped amorphous silicon layer. An anneal is performed to transform the first doped amorphous silicon layer and second doped amorphous silicon layer to crystalline silicon layers.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: October 7, 2014
    Assignee: International Business Machines Corporation
    Inventor: Harold John Hovel
  • Patent number: 8535970
    Abstract: The invention relates to a manufacturing process of a photovoltaic solar cell (100) comprising: providing high doped areas (20) on the rear side (18) of the photovoltaic solar cell (100), providing localized metal contacts (30) localized on said high doped areas (20), providing a passivation layer (50) covering a surface (52) between said contacts (30), wherein the contacts (30) remain substantially free of the passivation layer (50), and depositing a metal layer (32) for a back surface field.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: September 17, 2013
    Assignee: International Business Machines Corporation
    Inventors: Ranier Krauser, Lawrence A. Clevenger, Kevin Prettyman, Brian Christopher Sapp, Kevin S. Petrarca, Harold John Hovel, Gerd Pfeiffer, Zhengwen Li, Carl John Radens
  • Publication number: 20130087195
    Abstract: A solar cell and method of fabrication are disclosed. In one embodiment of the present invention, the method comprises depositing a first doped amorphous silicon layer on a first surface of a silicon substrate, depositing a second doped amorphous silicon layer on the first surface of the silicon substrate. The second doped amorphous silicon layer is doped oppositely from the first doped amorphous silicon layer. An anneal is performed to transform the first doped amorphous silicon layer and second doped amorphous silicon layer to crystalline silicon layers.
    Type: Application
    Filed: October 5, 2011
    Publication date: April 11, 2013
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Harold John Hovel
  • Publication number: 20120285518
    Abstract: A solar cell having n-type and p-type interdigitated back contacts (IBCs), which cover the entire back surface of the absorber layer. The spatial separation of the IBCs is in a direction perpendicular to the back surface, thus providing borderless contacts having a zero-footprint separation. As the contacts are on the back, photons incident on the cell's front surface can be absorbed without any shadowing.
    Type: Application
    Filed: May 9, 2011
    Publication date: November 15, 2012
    Applicant: International Business Machines Corporation
    Inventors: Joel P. De Souza, Harold John Hovel, Daniel Inns, Jeehwan Kim, Christian Lavoie, Devendra K. Sadana, Katherine L. Saenger, Davood Shahrjerdi, Zhen Zhang
  • Publication number: 20120285517
    Abstract: A Schottky Barrier solar cell having at least one of a low work function region and a high work function region provided on the front or back surface of a lightly-doped absorber material, which may be produced in a variety of different geometries. The method of producing the Schottky Barrier solar cells allows for short processing times and the use of low temperatures.
    Type: Application
    Filed: May 9, 2011
    Publication date: November 15, 2012
    Applicant: International Business Machines Corporation
    Inventors: Joel P. de Souza, Harold John Hovel, Daniel Inns, Jeehwan Kim, Christian Lavoie, Conal Eugene Murray, Devendra K. Sadana, Katherine L. Saenger, Ghavam Shahidi, Davood Shahrjerdi, Zhen Zhang
  • Patent number: 8129216
    Abstract: A method of manufacturing a solar cell. The method includes the steps of providing a substrate, applying a first dopant to a first surface, applying a second dopant to a second surface, covering the doped first surface with a hard mask, applying a third dopant to the substrate side, removing the hard mask, applying a pattern of first electrical contacts to the doping pattern, and applying a pattern of second electrical contacts to the doped second surface, the pattern of second electrical contacts and the doping pattern being straight-lined opposed.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: March 6, 2012
    Assignee: International Business Machines Corporation
    Inventors: Hans-Juergen Eickelmann, Michael Haag, Harold John Hovel, Rainer Krause, Markus Schmidt, Steven Erik Steen
  • Publication number: 20110318865
    Abstract: The invention relates to a manufacturing process of a photovoltaic solar cell (100) comprising: providing high doped areas (20) on the rear side (18) of the photovoltaic solar cell (100), providing localized metal contacts (30) localized on said high doped areas (20), providing a passivation layer (50) covering a surface (52) between said contacts (30), wherein the contacts (30) remain substantially free of the passivation layer (50), and depositing a metal layer (32) for a back surface field.
    Type: Application
    Filed: June 6, 2011
    Publication date: December 29, 2011
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Ranier Krauser, Lawrence A. Clevenger, Kevin Prettyman, Brian Christopher Sapp, Kevin S. Petrarca, Harold John Hovel, Gerd Pfeiffer, Zhengwen Li, Carl John Radens
  • Publication number: 20110316343
    Abstract: A photovoltaic module (10) comprises a plurality of solar cells (20) interconnected in serial arrays (15). At least some of the solar cells (20) are equipped with control units (30) comprising at least one thermal sensor (42) and one power sensor (43). The control unit (30) comprises means (35) for removing a specific solar cell (20?) from the photovoltaic module (10) network if said solar cell (20?) is found to have reached a predefined level of degradation. In a preferred embodiment, control unit (30) is an ASIC chip (40) in thermal contact with said solar cell (20) and electrically connected to said solar cell (20).
    Type: Application
    Filed: June 6, 2011
    Publication date: December 29, 2011
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Ranier Krauser, Lawrence A. Clevenger, Kevin Prettyman, Brian Christopher Sapp, Kevin S. Petrarca, Harold John Hovel, Gerd Pfeiffer, Zhengwen Li, Carl John Radens
  • Publication number: 20100297800
    Abstract: A solar cell panel and method of forming a solar cell panel. The method includes a: forming an electrically conductive bus bar on a top surface of a bottom cover plate; forming an electrically conductive contact frame proximate to a bottom surface of a top cover plate, the top cover plate transparent to visible light; and placing an array of rows and columns of solar cell chips between the bottom cover plate and the top cover plate, each solar cell chip of the array of solar cell chips comprising an anode adjacent to a top surface and a cathode adjacent to a bottom surface of the solar cell chip, the bus bar electrically contacting each anode of each solar cell chip of the array of solar cell chips and the contact frame contacting each anode of each solar cell chip of the array of solar cell chips.
    Type: Application
    Filed: August 3, 2010
    Publication date: November 25, 2010
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Harold John Hovel, Rainer Klaus Krause, Xiaoyan Shao, Steven Erik Steen
  • Publication number: 20100279454
    Abstract: A method of manufacturing a solar cell. The method includes the steps of providing a substrate, applying a first dopant to a first surface, applying a second dopant to a second surface, covering the doped first surface with a hard mask, applying a third dopant to the substrate side, removing the hard mask, applying a pattern of first electrical contacts to the doping pattern, and applying a pattern of second electrical contacts to the doped second surface, the pattern of second electrical contacts and the doping pattern being straight-lined opposed.
    Type: Application
    Filed: April 29, 2009
    Publication date: November 4, 2010
    Inventors: Hans-Juergen Eickelmann, Michael Haag, Harold John Hovel, Rainer Krause, Markus Schmidt, Steven Erik Steen
  • Patent number: 7749869
    Abstract: A method for improving the minority lifetime of silicon containing wafer having metallic contaminants therein is described incorporating annealing at 1200° C. or greater and providing a gaseous ambient of oxygen, an inert gas and a chlorine containing gas such as HCl.
    Type: Grant
    Filed: August 5, 2008
    Date of Patent: July 6, 2010
    Assignee: International Business Machines Corporation
    Inventors: Joel P. De Souza, Harold John Hovel, Daniel A. Inns, Devendra K. Sadana, Ghavam G. Shahidi
  • Publication number: 20100037933
    Abstract: A solar cell panel and method of forming a solar cell panel. The method includes a: forming an electrically conductive bus bar on a top surface of a bottom cover plate; forming an electrically conductive contact frame proximate to a bottom surface of a top cover plate, the top cover plate transparent to visible light; and placing an array of rows and columns of solar cell chips between the bottom cover plate and the top cover plate, each solar cell chip of the array of solar cell chips comprising an anode adjacent to a top surface and a cathode adjacent to a bottom surface of the solar cell chip, the bus bar electrically contacting each anode of each solar cell chip of the array of solar cell chips and the contact frame contacting each anode of each solar cell chip of the array of solar cell chips.
    Type: Application
    Filed: August 12, 2008
    Publication date: February 18, 2010
    Inventors: Harold John Hovel, Rainer Klaus Krause, Xiaoyan Shao, Steven Erik Steen
  • Publication number: 20100035409
    Abstract: A method for improving the minority lifetime of silicon containing wafer having metallic contaminants therein is described incorporating annealing at 1200° C. or greater and providing a gaseous ambient of oxygen, an inert gas and a chlorine containing gas such as HCl.
    Type: Application
    Filed: August 5, 2008
    Publication date: February 11, 2010
    Inventors: Joel P De Souza, Harold John Hovel, Daniel A. Inns, Devendra K. Sadana, Ghavam G. Shahidi
  • Patent number: 6823098
    Abstract: An optical switch for routing light between two waveguides is disclosed. The switch, or router, comprises a movable waveguide, the movable waveguide having two positions, wherein in a first position the movable waveguide is interposed between the two waveguides and transmits light between the two waveguides by evanescent wave coupling, and in the other position the movable waveguide is retracted from the two waveguides and is not transmitting light between the two waveguides. Means for moving the movable waveguide between the two positions is also disclosed. The optical switches are used in M×N optical routing arrays being capable of directing light from any one of the M input ports to any one of the N output ports with additional ADD/DROP functions.
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: November 23, 2004
    Assignee: International Business Machines Corporation
    Inventors: Daniel Guidotti, Harold John Hovel, Maurice McGlashan-Powell, Keith Randal Pope