Patents by Inventor Pratima V. Addepalli

Pratima V. Addepalli 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).

  • Electrical contact
    Patent number: 9412886
    Abstract: A photovoltaic device with a low-resistance stable electrical back contact is disclosed. The photovoltaic device can have a CuTex or CuTexNy layer.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: August 9, 2016
    Assignee: First Solar, Inc.
    Inventors: Pratima V. Addepalli, Sreenivas Jayaraman, Oleh P. Karpenko
  • Photovoltaic back contact
    Patent number: 9252302
    Abstract: A method to preparing Cadmium telluride surface before forming metal back contact is disclosed. The method can include removing carbon from Cadmium telluride surface.
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: February 2, 2016
    Assignee: First Solar, Inc.
    Inventors: Pratima V. Addepalli, John S. Deeken, Oleh Petro Karpenko
  • PHOTOVOLTAIC BACK CONTACT
    Publication number: 20140057389
    Abstract: A method to preparing Cadmium telluride surface before forming metal back contact is disclosed. The method can include removing carbon from Cadmium telluride surface.
    Type: Application
    Filed: November 5, 2013
    Publication date: February 27, 2014
    Applicant: First Solar, Inc.
    Inventors: Pratima V. Addepalli, John S. Deeken, Oleh Petro Karpenko
  • Photovoltaic back contact
    Patent number: 8603253
    Abstract: A method to preparing Cadmium telluride surface before forming metal back contact is disclosed. The method can include removing carbon from Cadmium telluride surface.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: December 10, 2013
    Assignee: First Solar, Inc.
    Inventors: Pratima V. Addepalli, John S. Deeken, Oleh P. Karpenko
  • ELECTRICAL CONTACT
    Publication number: 20120042929
    Abstract: A photovoltaic device with a low-resistance stable electrical back contact is disclosed. The photovoltaic device can have a CuTex or CuTexNy layer.
    Type: Application
    Filed: August 22, 2011
    Publication date: February 23, 2012
    Inventors: Pratima V. Addepalli, Sreenivas Jayaraman, Oleh P. Karpenko
  • Back Contact Formation
    Publication number: 20120024338
    Abstract: A photovoltaic cell may include a carbon residue and a copper ion on a cadmium telluride layer.
    Type: Application
    Filed: July 19, 2011
    Publication date: February 2, 2012
    Inventors: Pratima V. Addepalli, John S. Deeken, Oleh P. Karpenko
  • Photovoltaic device back contact
    Publication number: 20110146784
    Abstract: A method for manufacturing a photovoltaic device may include depositing a semiconductor absorber layer on a substrate, depositing a molybdenum in the presence of a nitrogen to form a molybdenum nitride in contact with the semiconductor absorber layer, and doping the molybdenum nitride with a copper dopant.
    Type: Application
    Filed: December 16, 2010
    Publication date: June 23, 2011
    Applicant: First Solar, Inc.
    Inventors: Pratima V. Addepalli, Oleh P. Karpenko, Thomas W. Shields
  • PHOTOVOLTAIC BACK CONTACT
    Publication number: 20110061736
    Abstract: A method to preparing Cadmium telluride surface before forming metal back contact is disclosed. The method can include removing carbon from Cadmium telluride surface.
    Type: Application
    Filed: September 10, 2010
    Publication date: March 17, 2011
    Applicant: First Solar, inc.
    Inventors: Pratima V. Addepalli, John S. Deeken, Oleh P. Karpenko