Patents by Inventor Ki Cheon Yoo

Ki Cheon Yoo 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).

  • Patent number: 9530570
    Abstract: The present description is directed to a manufacturing method of solid-state dye-sensitized solar cells and a solid-state electrolyte filling device used in the manufacturing method. The present invention provides a manufacturing method of dye-sensitized solar cells that fills the solid-state electrolyte more uniformly with enhanced efficiency to secure higher light-to-energy conversion efficiency.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: December 27, 2016
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Min-Jae Ko, Doh-Kwon Lee, Hong-Gon Kim, Jin-Young Kim, Ki-Cheon Yoo, Jin-Ah Lee, Bong-Soo Kim
  • Publication number: 20150302997
    Abstract: The present invention relates to a flexible photoelectrode and a manufacturing method thereof, and a dye-sensitized solar cell using the same. More particularly, the present invention relates to a flexible photoelectrode capable of forming a semiconductor electrode with excellent photoelectric conversion efficiency on a plastic substrate at low temperatures in a simple and stable manner, in which it is prepared by forming a nanocrystalline metal oxide layer calcined at high temperature on a high temperature resistant substrate, and transferring it to a flexible transparent substrate by a transfer method using an HF solution, and a flexible dye-sensitized solar cell comprising the same.
    Type: Application
    Filed: July 1, 2015
    Publication date: October 22, 2015
    Inventors: Min Jae KO, Kyungkon KIM, Won Mok KIM, Seung Hee HAN, Hong Gon KIM, Doh-Kwon LEE, Ki Cheon YOO, Jin-soo KIM
  • Patent number: 9005457
    Abstract: The present invention relates to a counter electrode for DSSC which includes a porous membrane include a carbon-based material calcinated at high temperature and a platinum nano-particles and maintains higher conductivity than a thin membrane and in which the electrolyte moves smoothly, a method of preparing the same, and a DSSC using the same which is improved in photoelectric efficiency.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: April 14, 2015
    Assignee: Korea Institute of Science and Technology
    Inventors: Min-Jae Ko, Ki-Cheon Yoo, Hong-Gon Kim, Doh-Kwon Lee, Bong-Soo Kim, Kyung-Kon Kim
  • Publication number: 20140335648
    Abstract: The present description is directed to a manufacturing method of solid-state dye-sensitized solar cells and a solid-state electrolyte filling device used in the manufacturing method. The present invention provides a manufacturing method of dye-sensitized solar cells that fills the solid-state electrolyte more uniformly with enhanced efficiency to secure higher light-to-energy conversion efficiency.
    Type: Application
    Filed: December 27, 2013
    Publication date: November 13, 2014
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Min-Jae KO, Doh-Kwon LEE, Hong-Gon KIM, Jin-Young KIM, Ki-Cheon YOO, Jin-Ah LEE, Bong-Soo KIM
  • Publication number: 20130269781
    Abstract: Disclosed is a polymer gel electrolyte composition. The composition includes an aqueous solution of a polysaccharide-based polymer and a liquid electrolyte in which a redox derivative is mixed with an organic solvent. The composition is easy to inject. The composition is free from problems of leakage and volatilization, thus being environmentally friendly. Further disclosed is a highly efficient dye-sensitized solar cell using the composition. The dye-sensitized solar cell is stable for a long period of time and can be readily commercialized.
    Type: Application
    Filed: January 11, 2013
    Publication date: October 17, 2013
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Min Jae KO, Doh-Kwon LEE, Hong Gon KIM, Jin Young KIM, Ki Cheon YOO, Se Jeong PARK, Bong Soo KIM
  • Publication number: 20130125970
    Abstract: The present invention relates to a counter electrode for DSSC which includes a porous membrane include a carbon-based material calcinated at high temperature and a platinum nano-particles and maintains higher conductivity than a thin membrane and in which the electrolyte moves smoothly, a method of preparing the same, and a DSSC using the same which is improved in photoelectric efficiency.
    Type: Application
    Filed: January 6, 2012
    Publication date: May 23, 2013
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Min-Jae Ko, Ki-Cheon Yoo, Hong-Gon Kim, Doh-Kwon Lee, Bong-Soo Kim, Kyung-Kon Kim
  • Publication number: 20130056068
    Abstract: The present invention relates to a method for manufacturing a flexible photoelectrode and a dye-sensitized solar cell using the same. More specifically, the method for manufacturingg a photoelectrode comprises forming a nanoparticle metal oxide layer on a flexible substrate, adsorbing dyes, and then, coating polymer, thereby forming a nanoparticle metal oxide layer consisting of nanoparticle metal oxide-dye-polymer. According to the present invention, the polymer penetrated between the nanoparticle metal oxide after dye adsorption may increase adhesion to the substrate and improve mechanical properties. Particularly, when applied for a flexible substrate such as a plastic substrate, bending property is excellent, and it may be useful for a flexible dye-sensitized solar cell having durability.
    Type: Application
    Filed: January 3, 2012
    Publication date: March 7, 2013
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Min-Jae KO, Hong-Gon KIM, Doh-Kwon LEE, Kyung-Kon KIM, Bong-Soo KIM, Ki-Cheon YOO
  • Publication number: 20120186644
    Abstract: The present invention relates to a flexible photoelectrode and a manufacturing method thereof, and a dye-sensitized solar cell using the same. More particularly, the present invention relates to a flexible photoelectrode capable of forming a semiconductor electrode with excellent photoelectric conversion efficiency on a plastic substrate at low temperatures in a simple and stable manner, in which it is prepared by forming a nanocrystalline metal oxide layer calcined at high temperature on a high temperature resistant substrate, and transferring it to a flexible transparent substrate by a transfer method using an HF solution, and a flexible dye-sensitized solar cell comprising the same.
    Type: Application
    Filed: July 27, 2011
    Publication date: July 26, 2012
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Min Jae KO, Kyungkon KIM, Won Mok KIM, Seung Hee HAN, Hong Gon KIM, Doh-Kwon LEE, Ki Cheon YOO, Jin-soo KIM
  • Patent number: 7799989
    Abstract: Disclosed is a photo-electrode for a dye-sensitized solar cell comprising a conductive substrate; a meso-porous metal oxide thin film formed on the surface of the conductive substrate; a porous film formed on the meso-porous metal oxide thin film and comprising metal oxide nanoparticles; and a photosensitive dye adsorbed on the surface of the porous film; and a process for preparation thereof.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: September 21, 2010
    Assignee: Korea Institute of Science and Technology
    Inventors: Kyung Kon Kim, Nam-Gyu Park, Ki Cheon Yoo, Wan In Lee, Yun Hee Lee
  • Publication number: 20080185037
    Abstract: Disclosed is a photo-electrode for a dye-sensitized solar cell comprising a conductive substrate; a meso-porous metal oxide thin film formed on the surface of the conductive substrate; a porous film formed on the meso-porous metal oxide thin film and comprising metal oxide nanoparticles; and a photosensitive dye adsorbed on the surface of the porous film; and a process for preparation thereof.
    Type: Application
    Filed: December 28, 2007
    Publication date: August 7, 2008
    Applicant: Korea Institute of Science and Technology
    Inventors: Kyung Kon KIM, Nam-Gyu Park, Ki Cheon Yoo, Wan In Lee, Yun Hee Lee