Patents by Inventor Daniel Derkacs

Daniel Derkacs 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: 11670728
    Abstract: A multijunction solar cell including interconnected first and second discrete semiconductor regions disposed adjacent and parallel to each other including first top solar subcell, second (and possibly third) lattice matched middle solar subcells; a graded interlayer adjacent to the last middle solar subcell; and a bottom solar subcell adjacent to said graded interlayer being lattice mismatched with respect to the last middle solar subcell; wherein an opening is provided from the bottom side of the semiconductor substrate to one or more of the solar subcells so as to allow a discrete electrical connector to be made extending in free space and to electrically connect contact pads on one or more of the solar subcells.
    Type: Grant
    Filed: April 6, 2021
    Date of Patent: June 6, 2023
    Assignee: SolAero Technologies Corp.
    Inventor: Daniel Derkacs
  • Patent number: 11658256
    Abstract: A multijunction solar cell including an upper first solar subcell having a first band gap and positioned for receiving an incoming light beam; a second solar subcell disposed below and adjacent to and lattice matched with said upper first solar subcell, and having a second band gap smaller than said first band gap; wherein at least one of the solar cells has a graded band gap throughout its thickness.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: May 23, 2023
    Assignee: SolAero Technologies Corp.
    Inventors: Daniel Derkacs, John Hart, Zachary Bittner
  • Patent number: 11658255
    Abstract: A metamorphic multijunction solar cell having a growth semiconductor substrate with a top surface having a doping in the range of 1x1018 to 1x1020 charge carriers/cm3; a window layer for a top (light facing) subcell formed directly on the top surface of the growth substrate; a sequence of layers of semiconductor material forming a solar cell directly on the window layer; a surrogate substrate on the top surface of the sequence of layers of semiconductor material, wherein a portion of the semiconductor substrate is removed so that only the high doped surface portion of the substrate, having a thickness in the range of 0.5 ?m to 10 ?m, remains.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: May 23, 2023
    Assignee: SolAero Technologies Inc.
    Inventors: Daniel Derkacs, Christopher Kerestes, Steven Whipple
  • Patent number: 11652182
    Abstract: A five junction solar cell and its method of manufacture including an upper first solar subcell composed of a semiconductor material having a first band gap; a second solar subcell adjacent to said first solar subcell and composed of a semiconductor material having a second band gap smaller than the first band gap and being lattice matched with the upper first solar subcell; a third solar subcell adjacent to said second solar subcell and composed of a semiconductor material having a third band gap smaller than the second band gap and being lattice matched with the second solar subcell; a fourth solar subcell adjacent to said second solar subcell and composed of a semiconductor material having a fourth band gap smaller than the third band gap and being lattice matched with respect to the third solar subcell; a graded interlayer adjacent to the fourth solar subcell and having a fifth band gap greater than the fourth band gap; and a bottom solar subcell adjacent to the graded interlayer and being lattice mismatc
    Type: Grant
    Filed: March 30, 2021
    Date of Patent: May 16, 2023
    Assignee: SolAero Technologies Corp.
    Inventor: Daniel Derkacs
  • Publication number: 20230142352
    Abstract: An inverted metamorphic multijunction solar cell including an upper first solar subcell, a second solar subcell and a third solar subcell. The upper first solar subcell has a first band gap and positioned for receiving an incoming light beam. The second solar subcell is disposed below and adjacent to, and is lattice matched with, the upper first solar subcell, and has a second band gap smaller than the first band gap. The third solar subcell is disposed below the second solar subcell, and is composed of a GaAs base and emitter layer so as to optimize the efficiency of the solar cell after exposure to radiation. In some implementations, at least one of the solar subcells has a graded band gap throughout its thickness.
    Type: Application
    Filed: January 4, 2023
    Publication date: May 11, 2023
    Inventors: Daniel Derkacs, John Hart, Zachary Bittner
  • Publication number: 20230128590
    Abstract: A multijunction solar cell including an upper first solar subcell having a first band gap and positioned for receiving an incoming light beam; a second solar subcell disposed below and adjacent to and lattice matched with said upper first solar subcell, and having a second band gap smaller than said first band gap; wherein the upper first solar subcell covers less than the entire upper surface of the second solar subcell, leaving an exposed portion of the second solar subcell around the periphery of the multijunction solar sell that lies in the path of the incoming light beam.
    Type: Application
    Filed: December 21, 2022
    Publication date: April 27, 2023
    Inventors: Daniel Derkacs, Daniel McGlynn
  • Publication number: 20230084059
    Abstract: A multijunction solar cell including an upper first solar subcell having a first band gap and positioned for receiving an incoming light beam; and a second solar subcell disposed below and adjacent to and lattice matched with said upper first solar subcell, and having a second band gap smaller than said first band gap; wherein at least one of the solar subcells has a graded band gap throughout the thickness of at least a portion of its emitter layer and base layer.
    Type: Application
    Filed: November 14, 2022
    Publication date: March 16, 2023
    Inventors: John Hart, Daniel Derkacs, Zachary Bittner, Andrew Espenlaub
  • Publication number: 20230065274
    Abstract: A multijunction solar cell comprising a first solar subcell having a first band gap; a second solar subcell disposed adjacent to said first solar subcell and including an emitter layer, and a base layer having a second band gap less than the first band gap, and being lattice mismatched with the upper first solar subcell, and an intermediate layer directly adjacent to and disposed between first and the second solar subcells and compositionally graded to lattice match the first solar subcell on one side and the second solar subcell on the other side, and arranged so that light can enter and pass through the first solar subcell and at least a portion of which can be reflected back into the first solar subcell by the intermediate layer, and is composed of a plurality of layers of materials with discontinuities in their respective indices of refraction.
    Type: Application
    Filed: August 8, 2022
    Publication date: March 2, 2023
    Inventors: Daniel Derkacs, John Hart, Zachary Bittner, Andrew Espenlaub
  • Publication number: 20230060357
    Abstract: A multijunction solar cell including an upper first solar subcell having a first band gap and positioned for receiving an incoming light beam; a second solar subcell disposed below and adjacent to and lattice matched with said upper first solar subcell, and having a second band gap smaller than said first band gap; wherein at least one of the solar subcells has a graded band gap throughout the thickness of at least a portion of the active layer.
    Type: Application
    Filed: September 6, 2022
    Publication date: March 2, 2023
    Inventors: John Hart, Daniel Derkacs, Zachary Bittner, Andrew Espenlaub
  • Patent number: 11594652
    Abstract: A method of fabricating a solar cell assembly comprising a plurality of solar cells mounted on a flexible support, the support comprising a conductive layer on the top surface thereof divided into two electrically isolated portions—a first conductive portion and a second conductive portion. Each solar cell comprises a front surface, a rear surface, and a first contact on the rear surface and a second contact on the front surface. Each one of the plurality of solar cells is placed on the first conductive portion with the first contact electrically connected to the first conductive portion so that the solar cells are connected through the first conductive portion. A second contact of each solar cell is then connected to the second conductive portion by an interconnect. The two conductive portions serve as bus bars representing contacts of two different polarities of the solar cell assembly.
    Type: Grant
    Filed: January 4, 2021
    Date of Patent: February 28, 2023
    Assignee: SolAero Technologies Corp.
    Inventors: Daniel Aiken, Daniel Derkacs
  • Patent number: 11569404
    Abstract: A multijunction solar cell including an upper first solar subcell having a first band gap and positioned for receiving an incoming light beam; a second solar subcell disposed below and adjacent to and lattice matched with said upper first solar subcell, and having a second band gap smaller than said first band gap; wherein the upper first solar subcell covers less than the entire upper surface of the second solar subcell, leaving an exposed portion of the second solar subcell that lies in the path of the incoming light beam.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: January 31, 2023
    Assignee: SolAero Technologies Corp.
    Inventors: Daniel Derkacs, Daniel McGlynn
  • Patent number: 11563133
    Abstract: A method of fabricating a four junction solar cell having an upper first solar subcell composed of a semiconductor material including aluminum and having a first band gap; a second solar subcell adjacent to said first solar subcell and composed of a semiconductor material having a second band gap smaller than the first band gap and being lattice matched with the upper first solar subcell; a third solar subcell adjacent to said second solar subcell and composed of a semiconductor material having a third band gap smaller than the second band gap and being lattice matched with the second solar subcell; and a fourth solar subcell adjacent to and lattice matched with said third solar subcell and composed of a semiconductor material having a fourth band gap smaller than the third band gap; wherein the fourth subcell has a direct bandgap of greater than 0.75 eV.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: January 24, 2023
    Assignee: SolAero Techologies Corp.
    Inventors: Daniel Derkacs, Daniel McGlynn
  • Publication number: 20220393055
    Abstract: A multijunction solar cell including interconnected first and second discrete semiconductor regions disposed adjacent and parallel to each other including first top solar subcell, second (and possibly third) lattice matched middle solar subcells; a graded interlayer adjacent to the last middle solar subcell; and a bottom solar subcell adjacent to said graded interlayer being lattice mismatched with respect to the last middle solar subcell; wherein an opening is provided from the bottom side of the semiconductor body to one or more of the solar subcells so as to allow a discrete electrical connector to be made extending in free space and to electrically connect contact pads on one or more of the solar subcells.
    Type: Application
    Filed: August 17, 2022
    Publication date: December 8, 2022
    Inventor: Daniel Derkacs
  • Publication number: 20220352405
    Abstract: A multijunction solar cell including a substrate and a top (or light-facing) solar subcell having an emitter layer, a base layer, and a window layer adjacent to the emitter layer, the window layer composed of a material that is optically transparent, has a band gap of greater than 2.6 eV, and includes an appropriately arranged multilayer antireflection coating on the top surface thereof.
    Type: Application
    Filed: April 28, 2022
    Publication date: November 3, 2022
    Applicant: SolAero Technologies Corp.
    Inventors: Daniel Derkacs, Andrew Colin Espenlaub
  • Patent number: 11482636
    Abstract: A multijunction solar cell including an upper first solar subcell having a first band gap and positioned for receiving an incoming light beam; a second solar subcell disposed below and adjacent to and lattice matched with said upper first solar subcell, and having a second band gap smaller than said first band gap; wherein at least one of the solar subcells has a graded band gap throughout the thickness of at least a portion of the active layer.
    Type: Grant
    Filed: September 3, 2021
    Date of Patent: October 25, 2022
    Assignee: SolAero Technologies Corp.
    Inventors: John Hart, Daniel Derkacs, Zachary Bittner, Andrew Espenlaub
  • Publication number: 20220336689
    Abstract: A multijunction solar cell includes an upper solar subcell, a bottom solar subcell adjacent to the upper solar subcell, a layer of light scattering elements below and directly adjacent to the bottom solar subcell, and a metallic layer disposed below and adjacent to the layer of light scattering elements.
    Type: Application
    Filed: July 1, 2022
    Publication date: October 20, 2022
    Applicant: SolAero Technologies Corp.
    Inventor: Daniel Derkacs
  • Publication number: 20220328711
    Abstract: A solar cell module comprising a plurality of solar cells mounted on a flexible support, the support comprising a conductive layer on the top surface thereof divided into two electrically isolated portions—a first conductive portion and a second conductive portion. Each solar cell comprises a front surface, a rear surface, and a first contact on the rear surface and a second contact on the front surface. Each one of the plurality of solar cells is placed on the first conductive portion with the first contact electrically connected to the first conductive portion so that the solar cells are connected through the first conductive portion. A second contact of each solar cell is then connected to the second conductive portion by a respective interconnect.
    Type: Application
    Filed: May 12, 2022
    Publication date: October 13, 2022
    Applicant: SOLAERO TECHNOLOGIES CORP.
    Inventors: Daniel Aiken, Daniel Derkacs
  • Publication number: 20220320358
    Abstract: A multijunction solar cell including an upper first solar subcell having a first band gap and positioned for receiving an incoming light beam; a second solar subcell disposed below and adjacent to and lattice matched with said upper first solar subcell, and having a second band gap smaller than said first band gap; wherein the ratio of the thickness of the emitter layer to the thickness of the base layer in at least one of the solar subcells is between 5:1 and 1:1.
    Type: Application
    Filed: April 1, 2021
    Publication date: October 6, 2022
    Applicant: SolAero Technologies Corp.
    Inventor: Daniel Derkacs
  • Publication number: 20220246779
    Abstract: A multijunction solar cell including an upper first solar subcell having a first band gap and positioned for receiving an incoming light beam; a second solar subcell disposed below and adjacent to and lattice matched with said upper first solar subcell, and having a second band gap smaller than said first band gap; wherein at least one of the solar subcells has a graded band gap throughout the thickness of at least a portion of the active layer.
    Type: Application
    Filed: September 3, 2021
    Publication date: August 4, 2022
    Applicant: SolAero Technologies Corp.
    Inventors: Daniel Derkacs, John Hart, Zachary Bittner, Andrew Colin Espenlaub
  • Publication number: 20220238741
    Abstract: A multijunction solar cell including an upper first solar subcell having a first band gap and positioned for receiving an incoming light beam; and a second solar subcell disposed below and adjacent to and lattice matched with said upper first solar subcell, and having a second band gap smaller than said first band gap; wherein at least one of the solar subcells has a graded band gap throughout the thickness of at least a portion of its emitter layer and base layer.
    Type: Application
    Filed: January 27, 2022
    Publication date: July 28, 2022
    Applicant: SolAero Technologies Corp.
    Inventors: Daniel Derkacs, John Hart, Zachary Bittner, Andrew Colin Espenlaub