Patents by Inventor Joel Nathan Duenow

Joel Nathan Duenow 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).

  • Fabrication and use of large-grain templates for epitaxial deposition of semiconductor materials
    Patent number: 10304989
    Abstract: Methods for growing and using large-grain templates are provided. According to an aspect of the invention, a method includes depositing a small-grain layer of a semiconductor material; treating the small-grain layer such that the small-grain layer becomes a large-grain layer; and growing an epitaxial layer of the semiconductor material on the large-grain layer. A ratio of an average grain size of the small-grain layer to a thickness of the small-grain layer is less than 1.0, and a ratio of an average grain size of the large-grain layer to a thickness of the large-grain layer is greater than 1.5.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: May 28, 2019
    Assignee: Alliance for Sustainable Energy, LLC
    Inventors: David Scott Albin, Wyatt Keith Metzger, James Michael Burst, Eric Michael Colegrove, Joel Nathan Duenow
  • FABRICATION AND USE OF LARGE-GRAIN TEMPLATES FOR EPITAXIAL DEPOSITION OF SEMICONDUCTOR MATERIALS
    Publication number: 20180277708
    Abstract: Methods for growing and using large-grain templates are provided. According to an aspect of the invention, a method includes depositing a small-grain layer of a semiconductor material; treating the small-grain layer such that the small-grain layer becomes a large-grain layer; and growing an epitaxial layer of the semiconductor material on the large-grain layer. A ratio of an average grain size of the small-grain layer to a thickness of the small-grain layer is less than 1.0, and a ratio of an average grain size of the large-grain layer to a thickness of the large-grain layer is greater than 1.5.
    Type: Application
    Filed: March 16, 2018
    Publication date: September 27, 2018
    Inventors: David Scott Albin, Wyatt Keith Metzger, James Michael Burst, Eric Michael Colegrove, Joel Nathan Duenow