Patents by Inventor Andrei Sergeyev

Andrei Sergeyev 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).

  • Vertically correlated clusters of charged quantum dots for optoelectronic devices, and methods of making same
    Patent number: 8994005
    Abstract: Devices (e.g., optoelectronic devices such as solar cells and infrared or THz photodetectors) with a nanomaterial having vertically correlated quantum dots with built-in charge (VC Q-BIC) and methods of making such devices. The VC Q-BIC material has two or more quantum dot layers, where the layers have quantum dots (individual quantum dots or quantum dot clusters) in a semiconductor material, and adjacent quantum dot layers are separated by a spacer layer of doped semiconductor material. The VC-QBIC nanomaterial provides long photocarrier lifetime, which improves the responsivity and sensitivity of detectors or conversion efficiency in solar cells as compared to previous comparable devices.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: March 31, 2015
    Assignee: The Research Foundation for The State University of New York
    Inventors: Vladimir Mitin, Andrei Sergeyev, Gottfried Strasser
  • Vertically Correlated Clusters of Charged Quantum Dots for Optoelectronic Devices, and Methods of Making Same
    Publication number: 20120248412
    Abstract: Devices (e.g., optoelectronic devices such as solar cells and infrared or THz photodetectors) with a nanomaterial having vertically correlated quantum dots with built-in charge (VC Q-BIC) and methods of making such devices. The VC Q-BIC material has two or more quantum dot layers, where the layers have quantum dots (individual quantum dots or quantum dot clusters) in a semiconductor material, and adjacent quantum dot layers are separated by a spacer layer of doped semiconductor material. The VC-QBIC nanomaterial provides long photocarrier lifetime, which improves the responsivity and sensitivity of detectors or conversion efficiency in solar cells as compared to previous comparable devices.
    Type: Application
    Filed: March 27, 2012
    Publication date: October 4, 2012
    Inventors: Vladimir Mitin, Andrei Sergeyev, Gottfried Strasser
  • Portable Terahertz Receiver for Advanced Chemical Sensing
    Publication number: 20120181431
    Abstract: The present invention is directed to a system and method for advanced chemical sensing utilizing a Terahertz receiver instrument having a compact tunable heterodyne mixer to detect chemical species in a noisy background of pollutants, and provide fast acquisition and analysis of the 0.1-2 THz spectrum. The present invention directly couples a microbolometer with a THz quantum cascade laser (QCL) that is utilized as the local oscillator (LO) source for the receiver.
    Type: Application
    Filed: August 19, 2010
    Publication date: July 19, 2012
    Inventors: Vladimir Mitin, Matthew Bell, Andrei Sergeyev, Aleksandr Verevkin