Patents by Inventor Sean M. Seefeld

Sean M. Seefeld 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 to Condition an Annealing Tool for High Quality CuZnSnS(Se) Films to Achieve High Performance Solar Cells Reliably
    Publication number: 20170062634
    Abstract: Techniques for improved kesterite film production through annealing chamber conditioning to achieve solar cells with a power conversion efficiency of greater than 12% are provided. In one aspect, a method of conditioning an annealing chamber for forming a kesterite film is provided. The method includes the step of: coating one or more inner surfaces of the annealing chamber with a film containing Sn and at least one of S and Se. A method for forming a kesterite film, a method for forming a solar cell, and a solar cell are also provided.
    Type: Application
    Filed: August 25, 2015
    Publication date: March 2, 2017
    Inventors: Yu Luo, David B. Mitzi, Sean M. Seefeld, Xiaoyan Shao, Sathish Thiruvengadam