Patents by Inventor Joung-Won Park

Joung-Won Park 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).

  • Publication number: 20050279402
    Abstract: Provided is a solar cell including: a first electrode and a second electrode facing each other; a porous membrane interposed between the first electrode and the second electrode and having a dye adsorbed thereto; an electrolyte interposed between the first electrode and the second electrode; and a buffering layer interposed between the first electrode and the porous membrane and having at least two layers. According to the construction of the solar cell, an electron-hole recombination is prevented by preventing the contact between an electrode having a porous membrane and an electrolyte, thereby improving the electron collection property and the photoelectric conversion efficiency of the dye-sensitized solar cell.
    Type: Application
    Filed: May 26, 2005
    Publication date: December 22, 2005
    Inventors: Kwang-Soon Ahn, Ji-Won Lee, Wha-Sup Lee, Jae-Man Choi, Byong-Cheol Shin, Joung-Won Park
  • Publication number: 20050236037
    Abstract: A high capacity dye-sensitized solar cell module where a plurality of unit cells are simultaneously formed at a substrate in a simplified manner with increased light absorption efficiency. The dye-sensitized solar cell module includes first and second conductive substrates facing one another with regions for a plurality of unit cells. First and second electrodes are formed on the first or the second substrate such that the first and the second electrodes face one another at the respective unit cells. A dye is adsorbed at the first electrode. The space between the first and the second substrates at the respective unit cells is filled with an electrolyte. Insulation regions are formed on at least one of the first and the second substrates between a pair of unit cells neighboring to one another. The pattern of insulation regions, on one or both of the substrates, results in the unit cells being coupled in series, in parallel, or in a combination manner.
    Type: Application
    Filed: April 20, 2005
    Publication date: October 27, 2005
    Inventors: Kwang-Soon Ahn, Ji-Won Lee, Wha-Sup Lee, Jae-Man Choi, Byong-Cheol Shin, Joung-Won Park
  • Publication number: 20050166959
    Abstract: The invention provides a dye-sensitized solar cell with an improved electrode structure and enhanced energy efficiency, and a method of manufacturing same. The dye-sensitized solar cell includes a light-transmission first electrode with a first surface, and a second electrode with a second surface facing the first surface of the first electrode. The second surface of the second electrode has convexo-concave portions. A porous layer is formed on the first surface of the first electrode. A dye is absorbed into the porous layer. An electrolyte is impregnated between the first and the second electrodes.
    Type: Application
    Filed: January 28, 2005
    Publication date: August 4, 2005
    Inventors: Wha-Sup Lee, Ji-Won Lee, Kwang-Soon Ahn, Jae-Man Choi, Byong-Cheol Shin, Joung-Won Park
  • Publication number: 20050166958
    Abstract: A dye-sensitized solar cell with an enlarged effective wavelength range for light energy absorption and enhanced photoelectric conversion efficiency, and a method of fabricating such a solar cell are disclosed. The dye-sensitized solar cell comprises a first electrode comprising a light transmission material, and a second electrode facing the first electrode. A porous layer is formed on the first electrode, and a composite dye is absorbed to the porous layer. The composite dye comprises two or more dye materials. An electrolyte is impregnated between the first and second electrodes.
    Type: Application
    Filed: January 28, 2005
    Publication date: August 4, 2005
    Inventors: Joung-Won Park, Ji-Won Lee, Wha-Sup Lee, Kwang-Soon Ahn, Jae-Man Choi, Byong-Cheol Shin
  • Publication number: 20050150545
    Abstract: Disclosed is a dye-sensitized solar cell with enhanced photoelectric conversion efficiency. The dye-sensitized solar cell includes a first electrode of a light transmission material, a second electrode facing the first electrode, and a dye-absorbed porous layer formed on the first electrode. An electrolyte is injected between the first and the second electrodes. The porous layer contains first and second materials differing from each other in conduction band energy level.
    Type: Application
    Filed: December 10, 2004
    Publication date: July 14, 2005
    Inventors: Jae-Man Choi, Ji-Won Lee, Wha-Sup Lee, Kwang-Soon Ahn, Byong-Cheol Shin, Joung-Won Park
  • Publication number: 20050067009
    Abstract: It is an object of the present invention to provide a dye-sensitized solar cell which has high conversion efficiency and excellent endurance. A dye-sensitized solar cell includes a first electrode and a second electrode facing each other. A buffer layer and a porous layer are sequentially formed on the first electrode and a dye is adsorbed on the porous layer. An electrolyte is impregnated between the first electrode and the second electrode. The dye-sensitized solar cell also includes an anti-reflection film formed on the outer surface of the first electrode.
    Type: Application
    Filed: September 24, 2004
    Publication date: March 31, 2005
    Inventors: Ji-Won Lee, Wha-Sup Lee, Jae-Man Choi, Joung-Won Park, Byong-Cheol Shin