Patents by Inventor Richard A. Haight

Richard A. Haight 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: 10938340
    Abstract: An integrated kesterite (e.g., CZT(S,Se)) photovoltaic device and battery is provided. In one aspect, a method of forming an integrated photovoltaic device and battery includes: forming a photovoltaic device having a substrate, an electrically conductive layer, an absorber layer, a buffer layer, a transparent front contact, and a metal grid; removing the substrate and the electrically conductive layer from the photovoltaic device to expose a backside surface of the absorber layer; forming at least one back contact on the backside surface of the absorber layer; and integrating the photovoltaic device with a battery, wherein the integrating includes connecting i) a positive contact of the battery with the back contact on the backside surface of the absorber layer and ii) a negative contact of the battery with the metal grid on the transparent front contact. An integrated photovoltaic device and battery is also provided.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: March 2, 2021
    Assignee: International Business Machines Corporation
    Inventors: Priscilla D. Antunez, Richard A. Haight, James B. Hannon, Teodor K. Todorov
  • Publication number: 20210016298
    Abstract: A wear-levelling apparatus (124) for a cyclone (100) includes: an upper section (128) defining an upper portion of a frusto-conical channel configured to receive material for delivery to a lower portion of the channel; a bearing assembly connected to the upper section; and a lower section (132) coupled to the upper section by the bearing assembly to permit rotation of the lower section about an axis of the channel; the lower section defining a lower portion of the channel configured to receive the material from the upper portion for discharge toward an outlet (120) of the cyclone.
    Type: Application
    Filed: March 13, 2019
    Publication date: January 21, 2021
    Inventors: Mike Swintak, Mark Schmidt, Vladimir Pajic, Richard Haight, Ronald Stark, Edwin Siu
  • Patent number: 10851934
    Abstract: A pump support assembly includes a skid having a top surface and a bottom surface configured to movably rest on the ground; and a frame for supporting a pump, the frame having a main body, and two wings extending from opposite sides of the main body substantially perpendicular to the main body, the frame supported on the top surface of the skid and connected to the skid at an end of one of the wings to isolate a pump support surface of the frame from deformations of the skid.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: December 1, 2020
    Assignee: WEIR CANADA, INC.
    Inventor: Richard Haight
  • Patent number: 10840404
    Abstract: Silver-containing absorbers for photovoltaic devices and techniques for fabrication thereof are provided. In one aspect, a method of forming an ink includes: mixing a silver halide and a solvent to form a first solution; mixing a metal, sulfur, and the solvent to form a second solution; combining the first solution and the second solution to form a precursor solution; and adding constituent components for an absorber material to the precursor solution to form the ink. Methods of forming an absorber film, a photovoltaic device, and the resulting photovoltaic device are also provided.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: November 17, 2020
    Assignee: International Business Machines Corporation
    Inventors: Priscilla D. Antunez, Talia S. Gershon, Richard A. Haight, Teodor K. Todorov
  • Patent number: 10790398
    Abstract: Kesterite photovoltaic devices having a back surface field layer are provided. In one aspect, a method of forming a photovoltaic device includes: forming a complete photovoltaic device having a substrate, an electrically conductive layer on the substrate, an absorber layer on the electrically conductive layer, a buffer layer on the absorber layer, and a transparent front contact on the buffer layer; removing the substrate and the electrically conductive layer from the complete photovoltaic device to expose a backside surface of the absorber layer; forming a passivating layer on the backside surface of the absorber layer; and forming a high work function back contact on the passivating layer. A photovoltaic device having a passivating layer is also provided.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: September 29, 2020
    Assignee: International Business Machines Corporation
    Inventors: Priscilla D. Antunez, Bruce A. Ek, Richard A. Haight, Ravin Mankad, Saurabh Singh, Teodor K. Todorov
  • Patent number: 10749050
    Abstract: A method for forming a back contact on an absorber layer in a photovoltaic device includes forming a two dimensional material on a first substrate. An absorber layer including Cu—Zn—Sn—S(Se) (CZTSSe) is grown over the first substrate on the two dimensional material. A buffer layer is grown on the absorber layer on a side opposite the two dimensional material. The absorber layer is exfoliated from the two dimensional material to remove the first substrate from a backside of the absorber layer opposite the buffer layer. A back contact is deposited on the absorber layer.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: August 18, 2020
    Assignee: International Business Machines Corporation
    Inventors: Richard A. Haight, James B. Hannon, Satoshi Oida
  • Publication number: 20200152815
    Abstract: Improved high work function back contacts for solar cells are provided. In one aspect, a method of forming a solar cell includes: forming a completed solar cell having a substrate coated with an electrically conductive material, an absorber disposed on the electrically conductive material, a buffer layer disposed on the absorber, a transparent front contact disposed on the buffer layer, and a metal grid disposed on the transparent front contact; removing the substrate and the electrically conductive material using exfoliation, exposing a backside surface of the solar cell; depositing a high work function material onto the back side surface of the solar cell; and depositing a back contact onto the high work function material. A solar cell formed by the present techniques is also provided. Yield of the exfoliated device can be improved by removing bubbles from adhesive used for exfoliation and/or forming contact pads to access the metal grid.
    Type: Application
    Filed: January 13, 2020
    Publication date: May 14, 2020
    Inventors: Priscilla D. Antunez, Douglas M. Bishop, Gloria W. Fraczak, Oki Gunawan, Richard A. Haight
  • Patent number: 10627022
    Abstract: A hose is provided, including: a liner having a channel extending between opposing open ends; a reinforcing member surrounding the liner; and a plurality of spaced apart wrapped stiffening members surrounding the reinforcing member.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: April 21, 2020
    Assignee: WEIR CANADA, INC.
    Inventor: Richard Haight
  • Publication number: 20200072687
    Abstract: A force detector and method for using the same include a lens and a cantilever below the lens. A laser above the lens is configured to emit a beam of light that reflects from a surface of the lens and the cantilever. A processor is configured to determine a force between the lens and the cantilever based on interference between the light reflected from the surface and the light reflected from the cantilever.
    Type: Application
    Filed: November 6, 2019
    Publication date: March 5, 2020
    Inventors: Arthur W. Ellis, Richard A. Haight, James B. Hannon, Rudolf M. Tromp
  • Patent number: 10564056
    Abstract: A force detector and method for using the same includes a lens. A cantilever is disposed below the movable lens. A laser is disposed above the movable lens and is configured to emit a beam of light that reflects from a surface of the lens and the cantilever. A processor is configured to determine a force between the movable lens and the cantilever based on a change in phase in images produced by the light reflected from the spherical surface and the light reflected from the cantilever.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: February 18, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Arthur W. Ellis, Richard A. Haight, James B. Hannon, Rudolf M. Tromp
  • Publication number: 20200044107
    Abstract: A photovoltaic device includes a first contact and a hybrid absorber layer. The hybrid absorber layer includes a chalcogenide layer and a semiconductor layer in contact with the chalcogenide layer. A buffer layer is formed on the absorber layer, and a transparent conductive contact layer is formed on the buffer layer.
    Type: Application
    Filed: October 8, 2019
    Publication date: February 6, 2020
    Inventors: Tayfun Gokmen, Oki Gunawan, Richard A. Haight, Jeehwan Kim, David B. Mitzi, Mark T. Winkler
  • Patent number: 10541346
    Abstract: Improved high work function back contacts for solar cells are provided. In one aspect, a method of forming a solar cell includes: forming a completed solar cell having a substrate coated with an electrically conductive material, an absorber disposed on the electrically conductive material, a buffer layer disposed on the absorber, a transparent front contact disposed on the buffer layer, and a metal grid disposed on the transparent front contact; removing the substrate and the electrically conductive material using exfoliation, exposing a backside surface of the solar cell; depositing a high work function material onto the back side surface of the solar cell; and depositing a back contact onto the high work function material. A solar cell formed by the present techniques is also provided. Yield of the exfoliated device can be improved by removing bubbles from adhesive used for exfoliation and/or forming contact pads to access the metal grid.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: January 21, 2020
    Assignee: International Business Machines Corporation
    Inventors: Priscilla D. Antunez, Douglas M. Bishop, Gloria W. Fraczak, Oki Gunawan, Richard A. Haight
  • Patent number: 10505066
    Abstract: A photovoltaic device includes a first contact and a hybrid absorber layer. The hybrid absorber layer includes a chalcogenide layer and a semiconductor layer in contact with the chalcogenide layer. A buffer layer is formed on the absorber layer, and a transparent conductive contact layer is formed on the buffer layer.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: December 10, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Tayfun Gokmen, Oki Gunawan, Richard A. Haight, Jeehwan Kim, David B. Mitzi, Mark T. Winkler
  • Publication number: 20190355856
    Abstract: A method of fabricating a photovoltaic device includes performing fabrication operations to form the photovoltaic device. The fabrication operations include replacing a portion of selenium with sulfur in a copper zinc tin sulfur selenium alloy (CZTSSe) material arranged on a substrate to form a sulfur enriched CZTSSe material to alter a band gap of the CZTSSe material. The fabrication operations include removing surface secondary phases or degraded portions of the sulfur enriched CZTSSe material to form a single phase sulfur enriched CZTSSe material. The fabrication operations further include replacing the substrate in contact with the single phase sulfur enriched CZTSSe material with a different contact material to form an exfoliated sulfur enriched CZTSSe device.
    Type: Application
    Filed: May 15, 2018
    Publication date: November 21, 2019
    Inventors: Priscilla D. Antunez, Douglas M. Bishop, Richard A. Haight, Yu Luo
  • Publication number: 20190341883
    Abstract: An integrated kesterite (e.g., CZT(S,Se)) photovoltaic device and battery is provided. In one aspect, a method of forming an integrated photovoltaic device and battery includes: forming a photovoltaic device having a substrate, an electrically conductive layer, an absorber layer, a buffer layer, a transparent front contact, and a metal grid; removing the substrate and the electrically conductive layer from the photovoltaic device to expose a backside surface of the absorber layer; forming at least one back contact on the backside surface of the absorber layer; and integrating the photovoltaic device with a battery, wherein the integrating includes connecting i) a positive contact of the battery with the back contact on the backside surface of the absorber layer and ii) a negative contact of the battery with the metal grid on the transparent front contact. An integrated photovoltaic device and battery is also provided.
    Type: Application
    Filed: July 17, 2019
    Publication date: November 7, 2019
    Inventors: Priscilla D. Antunez, Richard A. Haight, James B. Hannon, Teodor K. Todorov
  • Publication number: 20190334043
    Abstract: Techniques for forming an ohmic back contact for Ag2ZnSn(S,Se)4 photovoltaic devices. In one aspect, a method for forming a photovoltaic device includes the steps of: depositing a refractory electrode material onto a substrate; depositing a contact material onto the refractory electrode material, wherein the contact material includes a transition metal oxide; forming an absorber layer on the contact material, wherein the absorber layer includes Ag, Zn, Sn, and at least one of S and Se; annealing the absorber layer; forming a buffer layer on the absorber layer; and forming a top electrode on the buffer layer. The refractory electrode material may be Mo, W, Pt, Ti, TiN, FTO, and combinations thereof. The transition metal oxide may be TiO2, ZnO, SnO, ZnSnO, Ga2O3, and combinations thereof. A photovoltaic device is also provided.
    Type: Application
    Filed: July 9, 2019
    Publication date: October 31, 2019
    Inventors: Talia S. Gershon, Oki Gunawan, Richard A. Haight, Ravin Mankad
  • Patent number: 10446704
    Abstract: Techniques for forming an ohmic back contact for Ag2ZnSn(S,Se)4 photovoltaic devices. In one aspect, a method for forming a photovoltaic device includes the steps of: depositing a refractory electrode material onto a substrate; depositing a contact material onto the refractory electrode material, wherein the contact material includes a transition metal oxide; forming an absorber layer on the contact material, wherein the absorber layer includes Ag, Zn, Sn, and at least one of S and Se; annealing the absorber layer; forming a buffer layer on the absorber layer; and forming a top electrode on the buffer layer. The refractory electrode material may be Mo, W, Pt, Ti, TiN, FTO, and combinations thereof. The transition metal oxide may be TiO2, ZnO, SnO, ZnSnO, Ga2O3, and combinations thereof. A photovoltaic device is also provided.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: October 15, 2019
    Assignee: International Business Machines Corporation
    Inventors: Talia S. Gershon, Oki Gunawan, Richard A. Haight, Ravin Mankad
  • Publication number: 20190305169
    Abstract: Photovoltaic structures having multiple absorber layers separated by a diffusion barrier are provided. In one aspect, a method of forming an absorber on a substrate includes: depositing a first layer of light absorbing material on the substrate; depositing a diffusion barrier; depositing a second layer of light absorbing material on the diffusion barrier, wherein the first layer of light absorbing material has a different band gap from the second layer of light absorbing material; and annealing the absorber, wherein the diffusion barrier prevents diffusion of elements between the first layer of light absorbing material and the second layer of light absorbing material during the annealing. A solar cell and method for formation thereof are also provided.
    Type: Application
    Filed: June 11, 2019
    Publication date: October 3, 2019
    Inventors: Priscilla D. Antunez, Arthur W. Ellis, Richard A. Haight, James B. Hannon, Satoshi Oida
  • Patent number: 10396707
    Abstract: An integrated kesterite (e.g., CZT(S,Se)) photovoltaic device and battery is provided. In one aspect, a method of forming an integrated photovoltaic device and battery includes: forming a photovoltaic device having a substrate, an electrically conductive layer, an absorber layer, a buffer layer, a transparent front contact, and a metal grid; removing the substrate and the electrically conductive layer from the photovoltaic device to expose a backside surface of the absorber layer; forming at least one back contact on the backside surface of the absorber layer; and integrating the photovoltaic device with a battery, wherein the integrating includes connecting i) a positive contact of the battery with the back contact on the backside surface of the absorber layer and ii) a negative contact of the battery with the metal grid on the transparent front contact. An integrated photovoltaic device and battery is also provided.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: August 27, 2019
    Assignee: International Business Machines Corporation
    Inventors: Priscilla D. Antunez, Richard A. Haight, James B. Hannon, Teodor K. Todorov
  • Patent number: 10396221
    Abstract: A method of preparing a Ag2ZnSn(S,Se)4 compound, including dissolving selenourea (SeC(NH2)2) in an aprotic solvent, and dissolving a silver salt, a zinc salt, and a tin salt in the aprotic solvent with the selenourea to form a metal solution; and coating the metal solution onto a substrate to form an Ag2ZnSn(S,Se)4 compound layer on the substrate.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: August 27, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Talia S. Gershon, Richard A. Haight, Saurabh Singh, Teodor K. Todorov