Patents by Inventor Timothy J. Gillespie

Timothy J. Gillespie 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).

  • Method of making I-III-VI semiconductor materials for use in photovoltaic cells
    Patent number: 6323417
    Abstract: Provided is a method for making layers of I-III-VI semiconductor materials for use in photovoltaic cells, and particularly for making CIS and variations on CIS, such as CIGS and CIGSS. The method includes formation of a plurality of precursor films of the elemental components and at least one final heat treatment step in which the final semiconductor material is formed, with the precursor film for at least one III component being deposited prior to any precursor film including the I component.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: November 27, 2001
    Assignee: Lockheed Martin Corporation
    Inventors: Timothy J. Gillespie, Craig H. Marshall, Bruce R. Lanning