Patents by Inventor Hugh W. Hillhouse

Hugh W. Hillhouse 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: 9093190
    Abstract: Nanoparticle compositions and methods for synthesizing multinary chalcogenide CZTSSe nanoparticles containing Cu, Zn, and Sn in combination with S, Se or both are described. The nanoparticles may be incorporated into one or more ink solutions alone or in combination with other chalcogenide-based particles to make thin films useful for photovoltaic applications, including thin films from multilayer particle films having a composition profile. The composition and stoichiometry of the thin films may be further modified by subjecting the particle films to gas or liquid phase chalcogen exchange reactions.
    Type: Grant
    Filed: May 26, 2010
    Date of Patent: July 28, 2015
    Assignee: PURDUE RESEARCH FOUNDATION
    Inventors: Rakesh Agrawal, Hugh W. Hillhouse, Qijie Guo
  • Publication number: 20120138866
    Abstract: Nanoparticle compositions and methods for synthesizing multinary chalcogenide CZTSSe nanoparticles containing Cu, Zn, and Sn in combination with S, Se or both are described. The nanoparticles may be incorporated into one or more ink solutions alone or in combination with other chalcogenide-based particles to make thin films useful for photovoltaic applications, including thin films from multilayer particle films having a composition profile. The composition and stoichiometry of the thin films may be further modified by subjecting the particle films to gas or liquid phase chalcogen exchange reactions.
    Type: Application
    Filed: May 26, 2010
    Publication date: June 7, 2012
    Applicant: PURDUE RESEARCH FOUNDATION
    Inventors: Rakesh Agrawal, Hugh W. Hillhouse, Qijie Guo
  • Publication number: 20120115312
    Abstract: In one aspect, a method for forming CIGSSe-based thin films includes depositing at least two layers of particles on a substrate. At least one layer includes a CIGSSe particle having a chemical composition denoted by Cu(InI-xGax)(S1-ySey)2 where 0?x ?1 and 0?y?1.
    Type: Application
    Filed: May 26, 2010
    Publication date: May 10, 2012
    Applicant: PURDUE RESEARCH FOUNDATION
    Inventors: Rakesh Agrawal, Hugh W. Hillhouse, Qijie Guo, Mahaprasad Kar
  • Patent number: 8080483
    Abstract: A method of forming a nanoporous film is disclosed. The method comprises forming a coating solution including clusters, surfactant molecules, a solvent, and one of an acid catalyst and a base catalyst. The clusters comprise inorganic groups. The method further comprises aging the coating solution for a time period to select a predetermined phase that will self-assemble and applying the coating solution on a substrate. The method further comprises evaporating the solvent from the coating solution and removing the surfactant molecules to yield the nanoporous film.
    Type: Grant
    Filed: November 1, 2007
    Date of Patent: December 20, 2011
    Assignee: Purdue Research Foundation
    Inventors: Hugh W. Hillhouse, Vikrant N. Urade, Ta-Chen Wei, Michael P. Tate
  • Publication number: 20110278533
    Abstract: A method of forming a nanoporous film is disclosed. The method comprises forming a coating solution including clusters, surfactant molecules, a solvent, and one of an acid catalyst and a base catalyst. The clusters comprise inorganic groups. The method further comprises aging the coating solution for a time period to select a predetermined phase that will self-assemble and applying the coating solution on a substrate. The method further comprises evaporating the solvent from the coating solution and removing the surfactant molecules to yield the nanoporous film.
    Type: Application
    Filed: November 1, 2007
    Publication date: November 17, 2011
    Applicant: PURDUE RESEARCH FOUNDATION
    Inventors: HUGH W. HILLHOUSE, Vikrant N. Urade, Ta-Chen Wei, Michael P. Tate
  • Patent number: 7829059
    Abstract: A method for synthesizing a chalcogenide nanoparticle is provided. The method comprises reacting a metal component with an elemental chalcogen precursor in the presence of an organic solvent. The chalcogenide nanoparticles include ternary, binary and/or multinary chalcogenide nanoparticles and the metal component comprises metal halides or elemental metal precursors. The alkylamine solvent has a normal boiling temperature of above about 220° C. and an average particle size of from about 5 nm to about 1000 nm.
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: November 9, 2010
    Assignee: Purdue Research Foundation
    Inventors: Qijie Guo, Rakesh Agrawal, Hugh W. Hillhouse