Patents by Inventor Matheswaran Marudachalam

Matheswaran Marudachalam 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).

  • Process for preparing group Ib-IIIa-VIa semiconducting films
    Patent number: 5674555
    Abstract: Methods are provided for the production of supported monophasic group I-III-VI semiconductor films. In the subject methods, a substrate is coated with group I and III elements and then contacted with a reactive group VI element containing atmosphere under conditions sufficient to produce a substrate coated with a composite of at least two different group I-III-IV alloys. The resultant composite coated substrate is then annealed in an inert atmosphere under conditions sufficient to convert the composite coating to a monophasic group I-III-VI semiconductor film. The resultant supported semiconductor films find use in photovoltaic applications, particularly as absorber layers in solar cells.
    Type: Grant
    Filed: November 30, 1995
    Date of Patent: October 7, 1997
    Assignee: University of Delaware
    Inventors: Robert W. Birkmire, Jerold M. Schultz, Matheswaran Marudachalam, Habib Hichri