Patents by Inventor Julia Kumm

Julia Kumm 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).

  • PHOTOVOLTAIC SOLAR CELL AND METHOD FOR PRODUCING A METALLIC CONTACT-CONNECTION OF A PHOTOVOLTAIC SOLAR CELL
    Publication number: 20160247945
    Abstract: The invention relates to a method for producing a metallic contact-connection of a photovoltaic solar cell, including the following method steps: A providing a semiconductor substrate, and B applying an aluminum-containing contact-connection layer indirectly or directly to a side of the semiconductor substrate. The invention is characterized in that in a method step C, a diffusion barrier layer, which acts as a diffusion barrier at least with respect to aluminum, is applied indirectly or directly to the contact-connection layer, and in a method step D, a solderable layer comprised of a solderable material is applied indirectly or directly to the diffusion barrier layer, and in that the diffusion barrier layer and the contact-connection layer are applied by a PVD method.
    Type: Application
    Filed: September 23, 2014
    Publication date: August 25, 2016
    Applicant: Fraunhofer-Gesellschaft zur Forderung Der Angewand ten Forschung E.V.
    Inventors: Julia Kumm, Hassan Samadi, Winfried Wolke, Philip Hartmann, Andreas Wolf, Daniel Biro