Patents by Inventor Kay Orgassa

Kay Orgassa 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).

  • Method of patterning a thin-film photovoltaic layer stack
    Patent number: 12641890
    Abstract: A method of patterning a thin-film photovoltaic layer stack includes the steps of providing a continuous layer stack comprising a planar substrate, a first electrode layer on the substrate and a photovoltaic layer on the first electrode layer, immersing the layer stack into an electrically conductive solution, applying a bias voltage between the electrolyte solution and the first electrode layer and converting a first material or a first material composition provided in at least a first portion of the layer stack into a first reaction product by an electrochemical reaction, wherein the first reaction product has an electrical conductivity that is lower than an electrical conductivity of the first material or first material composition, or removing a first material or a first material composition provided in at least a first portion of the layer stack by an electrochemical reaction.
    Type: Grant
    Filed: May 31, 2024
    Date of Patent: May 26, 2026
    Assignee: First Solar, Inc.
    Inventors: Shuping Lin, Raffael Reineker, Hongqing Shan, Joachim Leopold Ludwig Müller, Bernd Sprecher, Kay Orgassa
  • METHOD OF PATTERNING A THIN-FILM PHOTOVOLTAIC LAYER STACK
    Publication number: 20240322057
    Abstract: A method of patterning a thin-film photovoltaic layer stack includes the steps of providing a continuous layer stack comprising a planar substrate, a first electrode layer on the substrate and a photovoltaic layer on the first electrode layer, immersing the layer stack into an electrically conductive solution, applying a bias voltage between the electrolyte solution and the first electrode layer and converting a first material or a first material composition provided in at least a first portion of the layer stack into a first reaction product by an electrochemical reaction, wherein the first reaction product has an electrical conductivity that is lower than an electrical conductivity of the first material or first material composition, or removing a first material or a first material composition provided in at least a first portion of the layer stack by an electrochemical reaction.
    Type: Application
    Filed: May 31, 2024
    Publication date: September 26, 2024
    Applicant: First Solar, Inc.
    Inventors: Shuping Lin, Raffael Reineker, Hongqing Shan, Joachim Leopold Ludwig Müller, Bernd Sprecher, Kay Orgassa