Patents by Inventor Christopher Wronski

Christopher Wronski 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 for making optically enhanced thin film photovoltaic device using lithography defined random surfaces
    Patent number: 4554727
    Abstract: The present invention is a method for producing an optically enhanced thin film photovoltaic device.The method includes the steps of producing an active layer of semiconductor material wherein the surface of at least one side of the active layer is textured such that the surface includes randomly spaced, densely packed microstructures of predetermined dimensions of the order of the wavelength of visible light in the semiconductor material and attaching a reflecting surface directly to one side of the semiconductor material and making an ohmic contact to the material.
    Type: Grant
    Filed: May 22, 1984
    Date of Patent: November 26, 1985
    Assignee: Exxon Research & Engineering Company
    Inventors: Harry W. Deckman, Horst Witzke, Christopher Wronski, Eli Yablonovitch
  • Realization of a thin film solar cell with a detached reflector
    Patent number: 4497974
    Abstract: The present invention is an optically enhanced solar cell having a detached reflector. The optically enhanced solar cell includes a semiconductor material bounded on each side by transparent electrical contacts and an optional antireflection coating with the surface of at least one of these layers being textured. Light is reflected in the cell by a reflector which is detached (i.e., spaced) from the enhanced cell using a layer of dielectric material.
    Type: Grant
    Filed: November 22, 1982
    Date of Patent: February 5, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventors: Harry W. Deckman, Horst Witzke, Christopher Wronski