Patents by Inventor Helmut Nesswetter

Helmut Nesswetter 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).

  • Technique for detecting a defect in a multi-junction solar cell
    Patent number: 10199985
    Abstract: A method for detecting a defect in a multi-junction solar cell is presented. The multi-junction solar cell comprises at least two vertically stacked p-n junctions. The method comprises exciting a first p-n junction of the at least two vertically stacked p-n junctions by illuminating the solar cell with excitation light in a first excitation wavelength range, detecting photoluminescence light emitted by photoluminescence of the first p-n junction, and generating a spatially resolved first photoluminescence image of the photoluminescence light emitted by the first p-n junction. Further, a computer program product and an apparatus for detecting a defect in a multi-junction solar cell are presented.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: February 5, 2019
    Assignee: AIRBUS DS GMBH
    Inventors: Claus Zimmermann, Helmut Nesswetter, Martin Rutzinger
  • Technique for detecting a defect in a multi-junction solar cell
    Publication number: 20170237396
    Abstract: A method for detecting a defect in a multi-junction solar cell is presented. The multi-junction solar cell comprises at least two vertically stacked p-n junctions. The method comprises exciting a first p-n junction of the at least two vertically stacked p-n junctions by illuminating the solar cell with excitation light in a first excitation wavelength range, detecting photoluminescence light emitted by photoluminescence of the first p-n junction, and generating a spatially resolved first photoluminescence image of the photoluminescence light emitted by the first p-n junction. Further, a computer program product and an apparatus for detecting a defect in a multi-junction solar cell are presented.
    Type: Application
    Filed: February 16, 2017
    Publication date: August 17, 2017
    Inventors: Claus Zimmermann, Helmut Nesswetter, Martin Rutzinger