Patents by Inventor YANFENG LAO

YANFENG LAO 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).

  • Tunable hot-carrier photodetector
    Patent number: 10347783
    Abstract: Various examples are provided for hot carrier spectral photodetectors that can be tuned. In one example, among others, a hot-carrier photodetector includes a graded barrier; an absorber disposed on the graded barrier; and a second barrier disposed on the absorber. For example, the absorber can include p-type doped GaAs. The graded barrier is disposed between the absorber and an injector, which can include p-type doped GaAs. In some implementations, the hot-carrier detector can include multiple barriers and absorbers. The hot-carrier photodetector can include an optical source (e.g., a LED) to trigger the VLWIR response in the photodetector.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: July 9, 2019
    Assignee: Georgia State University Research Foundation, Inc.
    Inventors: A. G. Unil Perera, Yanfeng Lao
  • TUNABLE HOT-CARRIER PHOTODETECTOR
    Publication number: 20160218237
    Abstract: Various examples are provided for hot carrier spectral photodetectors that can be tuned. In one example, among others, a hot-carrier photodetector includes a graded barrier; an absorber disposed on the graded barrier; and a second barrier disposed on the absorber. For example, the absorber can include p-type doped GaAs. The graded barrier is disposed between the absorber and an injector, which can include p-type doped GaAs. In some implementations, the hot-carrier detector can include multiple barriers and absorbers. The hot-carrier photodetector can include an optical source (e.g., a LED) to trigger the VLWIR response in the photodetector.
    Type: Application
    Filed: August 27, 2014
    Publication date: July 28, 2016
    Inventors: A.G. UNIL PERERA, YANFENG LAO