Patents by Inventor Barbara G. Barany

Barbara G. Barany 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).

  • High gain ultraviolet photoconductor based on wide bandgap nitrides
    Patent number: 5598014
    Abstract: A photoconductor has an active layer of gallium nitride having approximately 10.sup.15 to 5.times.10.sup.15 net donor sites per cubic centimeter and is sensitive to UV radiation. This photoconductor has at least one of a sheet resistance in the approximate range of 10.sup.4 to 5.times.10.sup.6 ohms/unit area and a relatively low level of photoluminescence in the range from about 430-450 nm when excited with light of energy higher than the bandgap energy of 3.4 eV. These criteria tend to define similar semiconductor materials which can form the active layer of an ultraviolet (UV) photodetector having the improved characteristics of a relatively low dark resistance, high sensitivity over at least a range of UV radiation intensity, and decreasing gain with increasing UV radiation.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: January 28, 1997
    Assignee: Honeywell Inc.
    Inventors: Barbara G. Barany, Scott T. Reimer, Robert P. Ulmer, J. David Zook