Patents by Inventor Kulbinder K. Banger

Kulbinder K. Banger 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).

  • Single-source precursors for ternary chalcopyrite materials, and methods of making and using the same
    Patent number: 6992202
    Abstract: A single source precursor for depositing ternary I-III-VI2 chalcopyrite materials useful as semiconductors. The single source precursor has the I-III-VI2 stoichiometry “built into” a single precursor molecular structure which degrades on heating or pyrolysis to yield the desired I-III-VI2 ternary chalcopyrite. The single source precursors effectively degrade to yield the ternary chalcopyrite at low temperature, e.g. below 500° C., and are useful to deposit thin film ternary chalcopyrite layers via a spray CVD technique. The ternary single source precursors according to the invention can be used to provide nanocrystallite structures useful as quantum dots. A method of making the ternary single source precursors is also provided.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: January 31, 2006
    Assignees: Ohio Aerospace Institute, The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Kulbinder K. Banger, Aloysius F. Hepp, Jerry D. Harris, Michael Hyun-Chul Jin, Stephanie L. Castro
  • Silver precursors for CVD processes
    Patent number: 6613924
    Abstract: Organosilver complexes with &bgr;-diketonates and neutral coordinating ligands are useful as silver precursors in chemical vapor deposition processes. The &bgr;-diketonates include 1,1,1,5,5,5-hexafluoro-2,4-pentanedionate (hfac), acetylacetonate (acac), 2,2,6,6-tetramethyl-3,5-heptanedionate (tmhd), 1,1,1-trifluoro-2,4-pentanedionate, (tfac), 2,2,7-trimethyl-3,5-octanedionate (tmod), 1,1,1-trifluoro-5,5-dimethyl-2,4-pentanedionate (tfh) 1,1,1,2,2,3,3,7,7,8,8,9,9,9-tetradecafluoro-4,6-nonanedionate (tdf). Neutral coordinating ligands include triphenylphosphine, tributylphosphine, pyridine, tetramethylethanediamine (TMEDA) and tetramethylpropanediamine (TMPDA).
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: September 2, 2003
    Assignee: Research Foundation of State of New York
    Inventors: John T. Welch, Silvana C. Ngo, Kulbinder K. Banger