Patents Represented by Law Firm Hill, Stedman & Simpson
  • Silicon semiconductor wafer solar cell and process for producing said wafer
    Patent number: 5702538
    Abstract: A silicon semiconductor wafer is constructed from three mutually inclined monocrystalline regions (6, 7, 8) which form three circular sectors of the wafer whose interfaces and boundary lines consequently extend radially with respect to one another and form angles (W6, W7, W8) of less than 180.degree. with one another. In this arrangement, two of the interfaces are first-order twin grain boundaries between two <111> crystal planes in each case. The silicon semiconductor wafer is used to produce inexpensive high-performance solar cells.
    Type: Grant
    Filed: June 14, 1996
    Date of Patent: December 30, 1997
    Assignee: Siemens Solar GmbH
    Inventors: Arthur Endros, Giuliano Martinelli