Patents by Inventor Jan-Min Yang

Jan-Min Yang 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 impregnating photosensitizing dye onto conductive substrate of photoanode of a solar cell
    Patent number: 8252620
    Abstract: The present invention provides a process for preparing a photoanode of a dye-sensitized solar cell (DSSC) by pressure swing impregnation, which includes impregnating a metal oxide layer on a conductive substrate in a photosensitizing dye solution in a vessel; introducing a pressurized inert gas into the vessel to maintain a first pressure therein for a period of time, wherein the first pressure can be lower or higher than the critical pressure of the inert gas and the solution is expanded by the inert gas; further pressurizing the vessel with the inert gas and maintaining at a second pressure higher than the first pressure for a period of time, wherein the inert gas becomes sub-critical or supercritical fluid and dissolves more in the solution, creating an anti-solvent effect, so that the photosensitizing dye further deposits onto the metal oxide layer due to the anti-solvent effect.
    Type: Grant
    Filed: August 10, 2010
    Date of Patent: August 28, 2012
    Assignee: National Tsing Hua University
    Inventors: Chung-Sung Tan, I-Hsiang Lin, Jan-Min Yang
  • Process for impregnating photosensitizing dye onto conductive substrate of photoanode
    Publication number: 20110263071
    Abstract: The present invention provides a process for preparing a photoanode of a dye-sensitized solar cell (DSSC) by pressure swing impregnation, which includes impregnating a metal oxide layer on a conductive substrate in a photosensitizing dye solution in a vessel; introducing a pressurized inert gas into the vessel to maintain a first pressure therein for a period of time, wherein the first pressure can be lower or higher than the critical pressure of the inert gas and the solution is expanded by the inert gas; further pressurizing the vessel with the inert gas and maintaining at a second pressure higher than the first pressure for a period of time, wherein the inert gas becomes sub-critical or supercritical fluid and dissolves more in the solution, creating an anti-solvent effect, so that the photosensitizing dye further deposits onto the metal oxide layer due to the anti-solvent effect.
    Type: Application
    Filed: August 10, 2010
    Publication date: October 27, 2011
    Applicant: National Tsing Hua University
    Inventors: Chung-Sung Tan, I-Hsiang Lin, Jan-Min Yang