Patents by Inventor Geofrey C. Aers

Geofrey C. Aers 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).

  • Bandgap tuning of semiconductor well structure
    Patent number: 6027989
    Abstract: In a method of bandgap tuning of a quantum well heterostructure wherein ions are implanted in the heterostructure by ion implantation, the ions are implanted so that different regions are implanted in such a way as to create different concentrations of defects. This provides varying bandgap energies to various areas of the heterostructure during a subsequent thermal treatment, which removes residual defects and initiates intermixing in the quantum well region to result in a structure having a selectively shifted bandgap.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: February 22, 2000
    Assignee: National Research Council of Canada
    Inventors: Philip J. Poole, Sylvain Charbonneau, Geofrey C. Aers, Michael Davies, Emil S. Koteles