Patents by Inventor Daniel Vaccarello

Daniel Vaccarello 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).

  • Copper-containing nanocrystals and methods of preparation therefor
    Patent number: 9346686
    Abstract: A one-pot approach for preparing ArSH capped Cu2ZnSnS4, Cu2ZnSn(S(1-x)Sex)4, Cu2SnS3, CuInS2, and CuIn(S(1-x)Sex)2 nanocrystals is provided. Examples involving reacting copper (II) acetylacetonate and indium chloride with thiourea and 2-mercapto-5-n-propylpyrimidine in the presence of an organic solvent are described. Monodispersed CuInS2, nanocrystals having a size of about 100 nm were prepared. Examples involving reacting copper (II) acetylacetonate, zinc chloride, and tin chloride with thiourea and 2-mercapto-5-n-propylpyrimidine in the presence of an organic solvent are described. Monodispersed Cu2ZnSnS4 nanocrystals having a size of about 2 nm were prepared. Nanociystals obtained were found to have excellent crystallinity, stoichiometry, and high collective photovoltaic activity without the need for postprocessing such as high temperature annihilation in a sulfur atmosphere.
    Type: Grant
    Filed: December 24, 2012
    Date of Patent: May 24, 2016
    Assignee: The University of Western Ontario
    Inventors: Zhifeng Ding, Falong Jia, Dave Love, Myong In Oh, Daniel Vaccarello, Amy Tapley
  • COPPER-CONTAINING NANOCRYSTALS AND METHODS OF PREPARATION THEREFOR
    Publication number: 20150360967
    Abstract: A one-pot approach for preparing ArSH capped Cu2ZnSnS4, Cu2ZnSn(S(1-x)Sex)4, Cu2SnS3, CuInS2, and CuIn(S(1-x)Sex)2 nanocrystals is provided. Examples involving reacting copper (II) acetylacetonate and indium chloride with thiourea and 2-mercapto-5-n-propylpyrimidine in the presence of an organic solvent are described. Monodispersed CuInS2, nanocrystals having a size of about 100 nm were prepared. Examples involving reacting copper (II) acetylacetonate, zinc chloride, and tin chloride with thiourea and 2-mercapto-5-n-propylpyrimidine in the presence of an organic solvent are described. Monodispersed Cu2ZnSnS4 nanocrystals having a size of about 2 nm were prepared. Nanocrystals obtained were found to have excellent crystallinity, stoichiometry, and high collective photovoltaic activity without the need for postprocessing such as high temperature annihilation in a sulfur atmosphere.
    Type: Application
    Filed: December 24, 2012
    Publication date: December 17, 2015
    Inventors: Zhifeng Ding, Falong Jia, Dave Love, Myong In Oh, Daniel Vaccarello, Amy Tapley