Patents by Inventor Guozhen Yue

Guozhen Yue 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: 8002958
    Abstract: A method for depositing a coating of a nanostructure material onto a substrate includes: (1) forming a solution or suspension of containing the nanostructure material; (2) selectively adding “chargers” to the solution; (3) immersing electrodes in the solution, the substrate upon which the nanostructure material is to be deposited acting as one of the electrodes; (4) applying a direct and/or alternating current electrical field between the two electrodes for a certain period of time thereby causing the nanostructure materials in the solution to migrate toward and attach themselves to the substrate electrode; and (5) subsequent optional processing of the coated substrate.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: August 23, 2011
    Assignees: University of North Carolina at Chapel Hill, Xintek, Inc.
    Inventors: Otto Z. Zhou, Bo Gao, Guozhen Yue, Soojin Oh
  • Patent number: 7887689
    Abstract: A method for attaching nanostructure-containing material onto a sharp tip of an object includes forming a suspension of pre-formed nanostructure-containing material in a liquid medium. An electrode is immersed in the suspension. The sharp tip of the object is arranged to be in contact with the suspension. A voltage is applied to the immersed electrode and to the sharp tip. The nanostructure-containing material attaches to the sharp tip of the object.
    Type: Grant
    Filed: May 10, 2004
    Date of Patent: February 15, 2011
    Assignees: The University of North Carolina at Chapel Hill, Xintek, Inc.
    Inventors: Otto Z. Zhou, Bo Gao, Guozhen Yue, Soojin Oh
  • Publication number: 20100117172
    Abstract: A thin film, hydrogenated, silicon based semiconductor alloy material is produced by a VHF energized plasma deposition process wherein a process gas is decomposed in a plasma so as to deposit the thin film material onto a substrate. The process is carried out at process gas pressures which are in the range of 0.5-2.0 torr, with substrate temperatures that do not exceed 300° C., and substrate-cathode spacings in the range of 10-50 millimeters. Deposition rates are at least 5 angstroms per second. Also disclosed are photovoltaic devices which include the semiconductor material.
    Type: Application
    Filed: November 7, 2008
    Publication date: May 13, 2010
    Applicant: United Solar Ovonic LLC
    Inventors: Baojie Yan, Xixiang Xu, Guozhen Yue, Subhendu Guha, Chi Yang
  • Publication number: 20100116334
    Abstract: A VHF energized plasma deposition process wherein a process gas is decomposed in a plasma so as to deposit the thin film material onto a substrate, is carried out at process gas pressures which are in the range of 0.5-2.0 torr, with substrate temperatures that do not exceed 300° C., and substrate-cathode spacings in the range of 10-50 millimeters. Deposition rates are at least 5 angstroms per second. The present method provides for the high speed deposition of semiconductor materials having a quality at least equivalent to materials produced at a much lower deposition rate.
    Type: Application
    Filed: November 7, 2008
    Publication date: May 13, 2010
    Applicant: United Solar Ovonic LLC
    Inventors: Xixiang Xu, David Alan Beglau, Guozhen Yue, Baojie Yan, Yang Li, Scott Jones, Subhendu Guha, Chi Yang
  • Publication number: 20080099339
    Abstract: A method of depositing a coating of a nanostructure material onto a substrate includes: (1) forming a solution of suspension of coating the nanostructure material; (2) selectively adding “chargers” to the solution; (3) immersing electrodes in the solution, the substrate upon which the nanostructure material is to be deposited acting as one of the electrodes; (4) applying a direct and/or alternating current electrical field between the two electrodes for a certain period of time thereby causing the nanostructure materials in the solution to migrate toward and attach themselves to the substrate electrode; and (5) subsequent optional processing of the coated substrate.
    Type: Application
    Filed: June 11, 2007
    Publication date: May 1, 2008
    Inventors: Otto Z. Zhou, Bo Gao, Guozhen Yue, Soojin Oh
  • Publication number: 20080006534
    Abstract: A method for depositing a coating of a nanostructure material onto a substrate includes: (1) forming a solution or suspension of containing the nanostructure material; (2) selectively adding “chargers” to the solution; (3) immersing electrodes in the solution, the substrate upon which the nanostructure material is to be deposited acting as one of the electrodes; (4) applying a direct and/or alternating current electrical field between the two electrodes for a certain period of time thereby causing the nanostructure materials in the solution to migrate toward and attach themselves to the substrate electrode; and (5) subsequent optional processing of the coated substrate.
    Type: Application
    Filed: November 4, 2005
    Publication date: January 10, 2008
    Applicant: The University of North Carolina at Chapel Hill
    Inventors: Otto Zhou, Bo Gao, Guozhen Yue, Soojin Oh
  • Publication number: 20070256734
    Abstract: A semiconductor device of p-i-n type configuration includes a p layer which is comprised of a p-doped semiconductor material, an n layer comprised of an n-doped semiconductor material and an i layer comprised of a substantially intrinsic, nanocrystalline semiconductor material interposed therebetween. The crystalline volume in the i layer decreases as the thickness of said layer increases from its interface with the n layer to its interface with the p layer. The grain size of the substantially intrinsic nanocrystalline semiconductor material may also decrease as the thickness of the i layer increases from its interface with the n layer to its interface with the p layer. The volume of regions of intermediate range order in a portion of the i layer commencing at the interface of the i layer and the p layer, and comprising no more than 50% of the thickness thereof, is greater than is the volume of regions of intermediate range order in the remainder of the i layer.
    Type: Application
    Filed: May 7, 2007
    Publication date: November 8, 2007
    Inventors: Subhendu Guha, Chi Yang, Baojie Yan, Guozhen Yue
  • Patent number: 7252749
    Abstract: A method for depositing a coating of a nanostructure material onto a substrate includes: (1) forming a solution or suspension of containing the nanostructure material; (2) selectively adding “chargers” to the solution; (3) immersing electrodes in the solution, the substrate upon which the nanostructure material is to be deposited acting as one of the electrodes; (4) applying a direct and/or alternating current electrical field between the two electrodes for a certain period of time thereby causing the nanostructure materials in the solution to migrate toward and attach themselves to the substrate electrode; and (5) subsequent optional processing of the coated substrate.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: August 7, 2007
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Otto Z. Zhou, Bo Gao, Guozhen Yue, Soojin Oh
  • Publication number: 20050133372
    Abstract: A method for attaching nanostructure-containing material onto a sharp tip of an object includes forming a suspension of pre-formed nanostructure-containing material in a liquid medium. An electrode is immersed in the suspension. The sharp tip of the object is arranged to be in contact with the suspension. A voltage is applied to the immersed electrode and to the sharp tip. The nanostructure-containing material attaches to the sharp tip of the object.
    Type: Application
    Filed: May 10, 2004
    Publication date: June 23, 2005
    Applicants: The University of North Carolina
    Inventors: Otto Zhou, Bo Gao, Guozhen Yue, Soojin Oh
  • Publication number: 20030102222
    Abstract: A method for depositing a coating of a nanostructure material onto a substrate includes: (1) forming a solution or suspension of containing the nanostructure material; (2) selectively adding “chargers” to the solution; (3) immersing electrodes in the solution, the substrate upon which the nanostructure material is to be deposited acting as one of the electrodes; (4) applying a direct and/or alternating current electrical field between the two electrodes for a certain period of time thereby causing the nanostructure materials in the solution to migrate toward and attach themselves to the substrate electrode; and (5) subsequent optional processing of the coated substrate.
    Type: Application
    Filed: November 30, 2001
    Publication date: June 5, 2003
    Inventors: Otto Z. Zhou, Bo Gao, Guozhen Yue, Soojin Oh