Patents by Inventor Young-June Yu

Young-June Yu 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: 9515218
    Abstract: A photovoltaic device operable to convert light to electricity, comprising a substrate, a plurality of structures essentially perpendicular to the substrate, one or more recesses between the structures, each recess having a planar mirror on a bottom wall thereof. The structures have p-n or p-i-n junctions for converting light into electricity. The planar mirrors function as an electrode and can reflect light incident thereon back to the structures to be converted into electricity.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: December 6, 2016
    Assignee: ZENA TECHNOLOGIES, INC.
    Inventors: Young-June Yu, Munib Wober
  • Patent number: 9490283
    Abstract: An imaging device formed as an active pixel array combining a CMOS fabrication process and a nanowire fabrication process. The pixels in the array may include a single or multiple photogates surrounding the nanowire. The photogates control the potential profile in the nanowire, allowing accumulation of photo-generated charges in the nanowire and transfer of the charges for signal readout. Each pixel may include a readout circuit which may include a reset transistor, charge transfer switch transistor, source follower amplifier, and pixel select transistor. A nanowire is generally structured as a vertical rod on the bulk semiconductor substrate to receive light energy impinging onto the tip of the nanowire. The nanowire may be configured to function as either a photodetector or a waveguide configured to guild the light to the substrate. Light of different wavelengths can be detected using the imaging device.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: November 8, 2016
    Assignee: ZENA TECHNOLOGIES, INC.
    Inventors: Young-June Yu, Munib Wober
  • Patent number: 9478685
    Abstract: Photodetector devices and methods for making the photodetector devices are disclosed herein. In an embodiment, the device may include a substrate; and one or more core structures, each having one or more shell layers disposed at least on a portion of a sidewall of the core structure. Each of the one or more structures extends substantially perpendicularly from the substrate. Each of the one or more core structures and the one or more shell layers form a Schottky barrier junction or a metal-insulator-semiconductor (MiS) junction.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: October 25, 2016
    Assignee: ZENA TECHNOLOGIES, INC.
    Inventors: Young-June Yu, Munib Wober
  • Publication number: 20160254301
    Abstract: Described herein is device configured to be a solar-blind UV detector comprising a substrate; a plurality of pixels; a plurality of nanowires in each of the plurality of pixel, wherein the plurality of nanowires extend essentially perpendicularly from the substrate.
    Type: Application
    Filed: May 9, 2016
    Publication date: September 1, 2016
    Inventors: Young-June Yu, Munib Wober
  • Publication number: 20160225811
    Abstract: Color filter array devices and methods of making color filter array devices are disclosed herein. A color filter array may include a substrate having a plurality of pixels thereon, one or more nanowires associated with each of the plurality of pixels, wherein each of the one or more nanowires extends substantially perpendicularly from the substrate, and an optical coupler associated with each of the one or more nanowires. A method of making a color filter array may include, making an array of nanowires, wherein each of the nanowires extend substantially perpendicularly from a substrate, disposing a transparent polymer material to substantially encapsulate the nanowires, removing the nanowires from the substrate, providing a pixel array comprising a plurality of pixels, wherein a hard polymer substantially covers an image plane of the pixel array, disposing the array of nanowires on the pixel array, and removing the transparent polymer encapsulating the nanowires.
    Type: Application
    Filed: April 8, 2016
    Publication date: August 4, 2016
    Inventors: Young-June Yu, Munib Wober
  • Publication number: 20160211394
    Abstract: A photovoltaic device operable to convert light to electricity, comprising a substrate, a plurality of structures essentially perpendicular to the substrate, one or more recesses between the structures, each recess having a planar mirror on a bottom wall thereof and each recess filled with a transparent material. The structures have p-n or p-i-n junctions for converting light into electricity. The planar mirrors function as an electrode and can reflect light incident thereon back to the structures to be converted into electricity.
    Type: Application
    Filed: March 28, 2016
    Publication date: July 21, 2016
    Inventors: Young-June Yu, Munib Wober, Peter Duane
  • Publication number: 20160163753
    Abstract: An embodiment relates to a device comprising a substrate having a front side and a back-side, a nanowire disposed on the back-side and an image sensing circuit disposed on the front side, wherein the nanowire is configured to be both a channel to transmit wavelengths up to a selective wavelength and an active element to detect the wavelengths up to the selective wavelength transmitted through the nanowire.
    Type: Application
    Filed: February 12, 2016
    Publication date: June 9, 2016
    Inventors: Young-June Yu, Munib Wober
  • Patent number: 9343490
    Abstract: Color filter array devices and methods of making color filter array devices are disclosed herein. A color filter array may include a substrate having a plurality of pixels thereon, one or more nanowires associated with each of the plurality of pixels, wherein each of the one or more nanowires extends substantially perpendicularly from the substrate, and an optical coupler associated with each of the one or more nanowires. A method of making a color filter array may include, making an array of nanowires, wherein each of the nanowires extend substantially perpendicularly from a substrate, disposing a transparent polymer material to substantially encapsulate the nanowires, removing the nanowires from the substrate, providing a pixel array comprising a plurality of pixels, wherein a hard polymer substantially covers an image plane of the pixel array, disposing the array of nanowires on the pixel array, and removing the transparent polymer encapsulating the nanowires.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: May 17, 2016
    Assignee: ZENA TECHNOLOGIES, INC.
    Inventors: Young-June Yu, Munib Wober
  • Patent number: 9337220
    Abstract: Described herein is device configured to be a solar-blind UV detector comprising a substrate; a plurality of pixels; a plurality of nanowires in each of the plurality of pixel, wherein the plurality of nanowires extend essentially perpendicularly from the substrate.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: May 10, 2016
    Assignee: ZENA TECHNOLOGIES, INC.
    Inventors: Young-June Yu, Munib Wober
  • Patent number: 9299866
    Abstract: A photovoltaic device operable to convert light to electricity, comprising a substrate, a plurality of structures essentially perpendicular to the substrate, one or more recesses between the structures, each recess having a planar mirror on a bottom wall thereof and each recess filled with a transparent material. The structures have p-n or p-i-n junctions for converting light into electricity. The planar mirrors function as an electrode and can reflect light incident thereon back to the structures to be converted into electricity.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: March 29, 2016
    Assignee: ZENA TECHNOLOGIES, INC.
    Inventors: Young-June Yu, Munib Wober, Peter Duane
  • Patent number: 9263613
    Abstract: An embodiment relates to a device comprising a substrate having a front side and a back-side, a nanowire disposed on the back-side and an image sensing circuit disposed on the front side, wherein the nanowire is configured to be both a channel to transmit wavelengths up to a selective wavelength and an active element to detect the wavelengths up to the selective wavelength transmitted through the nanowire.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: February 16, 2016
    Assignee: ZENA TECHNOLOGIES, INC.
    Inventors: Young-June Yu, Munib Wober
  • Publication number: 20160020347
    Abstract: Described herein is a photovoltaic device operable to convert light to electricity, comprising a substrate, a first plurality of structures essentially perpendicular to the substrate and disposed on a first face of the substrate, and a second plurality of structures essentially perpendicular to the substrate and disposed on a second face of the substrate, wherein both the first plurality and the second plurality of structures are configured to convert light to electricity.
    Type: Application
    Filed: July 18, 2014
    Publication date: January 21, 2016
    Inventors: Young-June Yu, Munib Wober
  • Publication number: 20160005892
    Abstract: Thin substrate photovoltaic and methods for making them are disclosed herein. In an embodiment, a photovoltaic device may include a substrate comprising a semiconductor material, one or more core structures, each extending essentially perpendicularly from a first surface of the substrate such that the core structures and the substrate form a single crystal, a shell layer disposed at least on a portion of a sidewall of the core structures and on the first surface, and a conductive layer disposed between adjacent core structures. The conductive layer forms an ohmic contact with the shell layer disposed on the first surface and between the adjacent core structures.
    Type: Application
    Filed: July 2, 2014
    Publication date: January 7, 2016
    Inventor: Young-June Yu
  • Publication number: 20150372175
    Abstract: Photodetector devices and methods for making the photodetector devices are disclosed herein. In an embodiment, the device may include a substrate; and one or more core structures, each having one or more shell layers disposed at least on a portion of a sidewall of the core structure. Each of the one or more structures extends substantially perpendicularly from the substrate. Each of the one or more core structures and the one or more shell layers form a Schottky barrier junction or a metal-insulator-semiconductor (MiS) junction.
    Type: Application
    Filed: June 23, 2014
    Publication date: December 24, 2015
    Inventors: Young-June Yu, Munib Wober
  • Publication number: 20150303333
    Abstract: Described herein is a device comprising: a substrate; one or more of a nanostructure extending essentially perpendicularly from the substrate; wherein the nanostructure comprises a core of a doped semiconductor, an first layer disposed on the core, and a second layer of an opposite type from the core and disposed on the first layer.
    Type: Application
    Filed: May 5, 2015
    Publication date: October 22, 2015
    Inventors: Young-June Yu, Munib Wober
  • Patent number: 9123841
    Abstract: An embodiment relates to a device comprising a substrate having a front side and a back-side, a nanowire disposed on the back-side and an image sensing circuit disposed on the front side, wherein the nanowire is configured to be both a channel to transmit wavelengths up to a selective wavelength and an active element to detect the wavelengths up to the selective wavelength transmitted through the nanowire.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: September 1, 2015
    Assignee: ZENA TECHNOLOGIES, INC.
    Inventors: Young-June Yu, Munib Wober
  • Publication number: 20150236059
    Abstract: Described herein is device configured to be a solar-blind UV detector comprising a substrate; a plurality of pixels; a plurality of nanowires in each of the plurality of pixel, wherein the plurality of nanowires extend essentially perpendicularly from the substrate.
    Type: Application
    Filed: May 6, 2015
    Publication date: August 20, 2015
    Inventors: Young-June Yu, Munib Wober
  • Publication number: 20150214261
    Abstract: An optical apparatus, including an optical filter comprising an array of nanowires oriented perpendicular to a light incidence surface of the filter, wherein the optical filter transmits light at a first wavelength that is incident on the incidence surface, wherein the first wavelength is based on a cross-sectional shape of the nanowires. The nanowires are created using a single lithography step. An imaging device and a method of fabricating the same, the device including an array of nanowires formed on a substrate, wherein at least one nanowire in the array of nanowires includes a photoelectric element to produce a photocurrent based, at least in part, on incident photons absorbed by the at least one nanowire.
    Type: Application
    Filed: August 12, 2013
    Publication date: July 30, 2015
    Applicants: President and Fellows of Harvard College, Zena Technologies, Inc.
    Inventors: Hyunsung Park, Yaping Dan, Kwanyong Seo, Young June Yu, Peter Duane, Munib Wober, Kenneth B. Crozier
  • Patent number: 9082673
    Abstract: Described herein is a device comprising: a substrate; one or more of a nanostructure extending essentially perpendicularly from the substrate; wherein the nanostructure comprises a core of a doped semiconductor, an first layer disposed on the core, and a second layer of an opposite type from the core and disposed on the first layer.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: July 14, 2015
    Assignee: ZENA TECHNOLOGIES, INC.
    Inventors: Young-June Yu, Munib Wober
  • Patent number: 9054008
    Abstract: Described herein is device configured to be a solar-blind UV detector comprising a substrate; a plurality of pixels; a plurality of nanowires in each of the plurality of pixel, wherein the plurality of nanowires extend essentially perpendicularly from the substrate.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: June 9, 2015
    Assignee: ZENA TECHNOLOGIES, INC.
    Inventors: Young-June Yu, Munib Wober