Patents by Inventor Mauro F. Vilela

Mauro F. Vilela 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).

  • Tandem solar cell with indium phosphide tunnel junction
    Patent number: 5800630
    Abstract: A monolithic, tandem photovoltaic device is provided having an indium phosphide tunnel junction lattice-matched to adjoining subcells and having high peak current densities and low electrical resistance. A method is provided for relatively low-temperature epitaxial growth of a tunnel junction and a subcell over the tunnel junction at temperatures which leave intact the desirable characteristics of the tunnel junction.
    Type: Grant
    Filed: December 5, 1994
    Date of Patent: September 1, 1998
    Assignee: University of Houston
    Inventors: Mauro F. Vilela, Abdelhak Bensaoula, Alexandre Freundlich, Philippe Renaud, Nasr-Eddine Medelci
  • Tandem solar cell with improved tunnel junction
    Patent number: 5407491
    Abstract: A monolithic, tandem photovoltaic device is provided having an indium gallium arsenide tunnel junction lattice-matched to adjoining subcells and having high peak current densities and low electrical resistance. A method is provided for relatively low-temperature epitaxial growth of a subcell over the tunnel junction at temperatures which leave intact the desirable characteristics of the tunnel junction.
    Type: Grant
    Filed: April 8, 1993
    Date of Patent: April 18, 1995
    Assignee: University of Houston
    Inventors: Alexandre Freundlich, Mauro F. Vilela, Abdelhak Bensaoula, Alex Ignatiev