Patents by Inventor Andreas Kraenzl

Andreas Kraenzl 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).

  • Bifacial solar cells with back surface doping
    Patent number: 8404970
    Abstract: A simplified manufacturing process and the resultant bifacial solar cell (BSC) are provided, the simplified manufacturing process reducing manufacturing costs. The BSC includes an active region located on the front surface of the substrate, formed for example by a phosphorous diffusion step. The back surface includes a doped region, the doped region having the same conductivity as the substrate but with a higher doping level. Contact grids are formed, for example by screen printing. Front junction isolation is accomplished using a laser scribe.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: March 26, 2013
    Assignee: Silicor Materials Inc.
    Inventors: Martin Kaes, Peter Borden, Kamel Ounadjela, Andreas Kraenzl, Alain Blosse, Fritz G. Kirscht
  • Bifacial solar cells with overlaid back grid surface
    Patent number: 8298850
    Abstract: A simplified manufacturing process and the resultant bifacial solar cell (BSC) are provided, the simplified manufacturing process reducing manufacturing costs. The BSC includes an active region located on the front surface of the substrate, formed for example by a phosphorous diffusion step. After removing the PSG, assuming phosphorous diffusion, and isolating the front junction, dielectric layers are deposited on the front and back surfaces. Contact grids are formed, for example by screen printing. Prior to depositing the back surface dielectric, a metal grid may be applied to the back surface, the back surface contact grid registered to, and alloyed to, the metal grid during contact firing.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: October 30, 2012
    Assignee: Silicor Materials Inc.
    Inventors: Martin Kaes, Peter Borden, Kamel Ounadjela, Andreas Kraenzl, Alain Blosse, Fritz G. Kirscht
  • Bifacial solar cells with back surface doping
    Publication number: 20100275984
    Abstract: A simplified manufacturing process and the resultant bifacial solar cell (BSC) are provided, the simplified manufacturing process reducing manufacturing costs. The BSC includes an active region located on the front surface of the substrate, formed for example by a phosphorous diffusion step. The back surface includes a doped region, the doped region having the same conductivity as the substrate but with a higher doping level. Contact grids are formed, for example by screen printing. Front junction isolation is accomplished using a laser scribe.
    Type: Application
    Filed: June 15, 2009
    Publication date: November 4, 2010
    Applicant: Calisolar, Inc.
    Inventors: Martin Kaes, Peter Borden, Kamel Ounadjela, Andreas Kraenzl, Alain Blosse, Fritz G. Kirscht
  • Bifacial solar cells with back surface reflector
    Publication number: 20100275995
    Abstract: A simplified manufacturing process and the resultant bifacial solar cell (BSC) are provided, the simplified manufacturing process reducing manufacturing costs. The BSC includes a back surface contact grid and an overlaid blanket metal reflector. A doped amorphous silicon layer is interposed between the contact grid and the blanket layer.
    Type: Application
    Filed: June 15, 2009
    Publication date: November 4, 2010
    Applicant: Calisolar, Inc.
    Inventors: Martin Kaes, Peter Borden, Kamel Ounadjela, Andreas Kraenzl, Alain Blosse, Fritz G. Kirscht
  • Bifacial solar cells with overlaid back grid surface
    Publication number: 20100275983
    Abstract: A simplified manufacturing process and the resultant bifacial solar cell (BSC) are provided, the simplified manufacturing process reducing manufacturing costs. The BSC includes an active region located on the front surface of the substrate, formed for example by a phosphorous diffusion step. After removing the PSG, assuming phosphorous diffusion, and isolating the front junction, dielectric layers are deposited on the front and back surfaces. Contact grids are formed, for example by screen printing. Prior to depositing the back surface dielectric, a metal grid may be applied to the back surface, the back surface contact grid registered to, and alloyed to, the metal grid during contact firing.
    Type: Application
    Filed: June 15, 2009
    Publication date: November 4, 2010
    Applicant: Calisolar, Inc.
    Inventors: Martin Kaes, Peter Borden, Kamel Ounadjela, Andreas Kraenzl, Alain Blosse, Fritz G. Kirscht