Patents by Inventor Wha-Sup Lee

Wha-Sup Lee 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: 8143516
    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: Grant
    Filed: April 20, 2005
    Date of Patent: March 27, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Kwang-Soon Ahn, Ji-Won Lee, Wha-Sup Lee, Jae-Man Choi, Byong-Cheol Shin, Joung-Won Park
  • Patent number: 8053664
    Abstract: A transparent electrode having thermal stability, composed of a transparent conductive material containing a pentavalent element, a method of fabricating the same, and a dye-sensitized solar cell including the electrode. The transparent electrode having thermal stability does not substantially deteriorate even when it is exposed to high temperatures and its conductivity is not reduced. Thus, the dye-sensitized solar cell including the electrode can have improved performance.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: November 8, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Kwang-Soon Ahn, Ji-Won Lee, Wha Sup Lee, Jae-Man Choi, Byong-Cheol Shin, Joung-Won Park
  • Patent number: 7939749
    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: Grant
    Filed: May 26, 2005
    Date of Patent: May 10, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Kwang-Soon Ahn, Ji-Won Lee, Wha-Sup Lee, Jae-Man Choi, Byong-Cheol Shin, Joung-Won Park
  • Patent number: 7790980
    Abstract: A dye for a dye sensitized photovoltaic cell is disclosed. A dye sensitized photovoltaic cell including the dye is also disclosed. The dye includes a metal composite treated with a cation selected from imidazolium cations, pyridinium cations, pyrrolidinium cations, and quinolidinium cations.
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: September 7, 2010
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jae-Kwan Lee, Ji-Won Lee, Wha-Sup Lee, Kwang-Soon Ahn, Jae-Man Choi, Moon-Sung Kang, Byong-Cheol Shin, Joung-Won Park, Moon-Seok Kwon, Soo-Jin Moon
  • Publication number: 20100009494
    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: September 22, 2009
    Publication date: January 14, 2010
    Inventors: Jae-Man Choi, Ji-Won Lee, Wha-Sup Lee, Kwang-Soon Ahn, Byong-Cheol Shin, Joung-Won Park
  • Patent number: 7592540
    Abstract: A polymer electrolyte composition for a dye-sensitized solar cell, a polymer electrolyte, a dye-sensitized solar cell employing the polymer electrolyte, and a method for preparing the same. The polymer electrolyte composition for a dye-sensitized solar cell includes: a mono-functional or multi-functional monomer having at least one ethylene glycol in a side chain; a photoinitiator; a lithium salt; and an organic solvent. The polymer electrolyte suppresses the volatilization of a redox electrolyte and provides stable photoelectrochemical properties against environmental changes, such as a rise in the external temperature of a solar cell. The dye-sensitized solar cell includes: first and second electrodes facing each other; a dye-adsorbed porous film interposed between the first and second electrodes; and the polymer electrolyte interposed between the first and second electrodes. The dye-sensitized solar cell has a high voltage and high photoelectric conversion efficiency.
    Type: Grant
    Filed: May 15, 2006
    Date of Patent: September 22, 2009
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Joung-Won Park, Kang-Jin Kim, Seung-Hoon Kal, Wha-Sup Lee, Byong-Cheol Shin
  • Publication number: 20090203164
    Abstract: An electrolyte composition for a dye sensitized solar cell according to one embodiment includes a first polymer or a non-volatile liquid compound having a weight average molecular weight of less than or equal to 500, a second polymer having a weight average molecular weight of more than or equal to 2000, inorganic nano-particles, and a redox derivative.
    Type: Application
    Filed: April 21, 2009
    Publication date: August 13, 2009
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Moon-Sung Kang, Ji-Won Lee, Wha-Sup Lee, Kwang-Soon Ahn, Jae-Man Choi, Jae-Kwan Lee, Moon-Seok Kwon, Byong-Cheol Shin, Soo-Jin Moon, Joung-Won Park
  • Publication number: 20080202583
    Abstract: A dye-sensitized solar cell including: a first electrode; a light absorption layer on one side of the first electrode; a second electrode facing the light absorption layer on the first electrode; and an electrolyte between the first electrode and the second electrode, wherein the light absorption layer includes: a photosensitive dye adsorbed to a porous membrane, the porous membrane including semiconductor particulates and an -M-O-M- oxide network about the semiconductor particulates, wherein the M is a transition metal.
    Type: Application
    Filed: December 28, 2007
    Publication date: August 28, 2008
    Inventor: Wha-Sup Lee
  • Publication number: 20080115829
    Abstract: A dye-sensitized solar cell includes a first electrode including a conductive transparent substrate; a light absorption layer disposed on a side of the first electrode; a second electrode facing the first electrode; and an electrolyte disposed between the first and the second electrode. The light absorption layer includes a porous membrane that includes semiconductor particulates, and a photosensitized dye adsorbed on a surface of the porous membrane. The porous membrane has a membrane density ranging from about 0.83 to about 1.97 mg/mm3, wherein the membrane density is a ratio of a porous membrane volume relative to a semiconductor particulate mass.
    Type: Application
    Filed: October 24, 2007
    Publication date: May 22, 2008
    Inventors: Wha-Sup Lee, Ji-Won Lee, Joung-Won Park, Jae-Man Choi, Kwang-Soon Ahn, Moon-Sung Kang, Byong-Cheol Shin, Moon-Seok Kwon, Soo-Jin Moon, Jae-Kwan Lee
  • Publication number: 20080115831
    Abstract: An electrolyte composition for a dye sensitized solar cell according to one embodiment includes a first polymer or a non-volatile liquid compound having a weight average molecular weight of less than or equal to 500, a second polymer having a weight average molecular weight of more than or equal to 2000, inorganic nano-particles, and a redox derivative.
    Type: Application
    Filed: January 30, 2007
    Publication date: May 22, 2008
    Inventors: Moon-Sung Kang, Ji-Won Lee, Wha-Sup Lee, Kwang-Soon Ahn, Jae-Man Choi, Jae-Kwan Lee, Moon-Seok Kwon, Byong-Cheol Shin, Soo-Jin Moon, Joung-Won Park
  • Publication number: 20070119499
    Abstract: A solar cell includes first and second electrodes facing each other, a light absorption layer formed on the first electrode, and a lead electrode formed on the first electrode in a first direction such that the lead electrode is spaced apart from the light absorption layer. When the length of a first edge of the light absorption layer proceeding in the first direction is indicated by A and the length of a second edge of the light absorption layer proceeding in a second direction crossing the first direction is indicated by B, the value of A/B satisfies the following condition: 1.3?A/B?125.
    Type: Application
    Filed: November 7, 2006
    Publication date: May 31, 2007
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Byong-Cheol Shin, Ji-Won Lee, Wha-Sup Lee, Kwang-Soon Ahn, Jae-Man Choi, Joung-Won Park
  • Publication number: 20070107775
    Abstract: A solar cell includes a substrate, an electrode formed on the substrate, and a light absorption layer formed on the electrode. A contact area enlargement region is formed between the electrode and the light absorption layer. The solar cell is formed by forming an electrode with a contact area enlargement region; and forming a light absorption layer on the electrode.
    Type: Application
    Filed: November 6, 2006
    Publication date: May 17, 2007
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Jae-Man Choi, Ji-Won Lee, Wha-Sup Lee, Kwang-Soon Ahn, Byong-Cheol Shin, Joung-Won Park
  • Publication number: 20070095390
    Abstract: A solar cell includes an electrode and a porous film formed on the electrode and containing metallic oxide particles. The metallic oxide particles have a mean particle diameter of 5 nm-14 nm.
    Type: Application
    Filed: November 2, 2006
    Publication date: May 3, 2007
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Kwang-Soon Ahn, Ji-Won Lee, Moon-Sung Kang, Wha-Sup Lee, Jae-Man Choi, Byong-Cheol Shin, Jae-Kwan Lee, Joung-Won Park, Moon-Seok Kwon, Soo-Jin Moon
  • Publication number: 20070039644
    Abstract: A dye for a dye sensitized photovoltaic cell is disclosed. A dye sensitized photovoltaic cell including the dye is also disclosed. The dye includes a metal composite treated with a cation selected from imidazolium cations, pyridinium cations, pyrrolidinium cations, and quinolidinium cations.
    Type: Application
    Filed: August 17, 2006
    Publication date: February 22, 2007
    Inventors: Jae-Kwan Lee, Ji-Won Lee, Wha-Sup Lee, Kwang-Soon Ahn, Jae-Man Choi, Moon-Sung Kang, Byong-Cheol Shin, Joung-Won Park, Moon-Seok Kwon, Soo-Jin Moon
  • Publication number: 20070028959
    Abstract: An electrode for a photoelectric conversion device includes a transparent substrate and a transparent conductive film, in which the transparent conductive film contains an added metal element on at least one surface thereof, and the surface resistance of the transparent substrate is reduced in order to improve the photoelectric conversion efficiency. A dye-sensitized solar cell includes the electrode.
    Type: Application
    Filed: August 2, 2006
    Publication date: February 8, 2007
    Applicant: Samsung SDI Co., Ltd
    Inventors: Wha-Sup Lee, Ji-Won Lee, Kwong-Soon Ahn, Jae-Man Choi, Byong-Chaol Shin, Joung-Won Park
  • Publication number: 20060254640
    Abstract: A polymer electrolyte composition for a dye-sensitized solar cell, a polymer electrolyte, a dye-sensitized solar cell employing the polymer electrolyte, and a method for preparing the same. The polymer electrolyte composition for a dye-sensitized solar cell includes: a mono-functional or multi-functional monomer having at least one ethylene glycol in a side chain; a polymerization initiator; a lithium salt; and an organic solvent. The polymer electrolyte suppresses the volatilization of a redox electrolyte and provides stable photoelectrochemical properties against environmental changes, such as a rise in the external temperature of a solar cell. The dye-sensitized solar cell includes: first and second electrodes facing each other; a dye-adsorbed porous film interposed between the first and second electrodes; and the polymer electrolyte interposed between the first and second electrodes. The dye-sensitized solar cell has a high voltage and high photoelectric conversion efficiency.
    Type: Application
    Filed: May 15, 2006
    Publication date: November 16, 2006
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Joung-Won Park, Kang-Jin Kim, Seung-Hoon kal, Wha-Sup Lee, Byong-Cheol Shin
  • Publication number: 20060016472
    Abstract: An electrolyte composition and a solar cell using the same are provided. The electrolyte composition comprises an electron donor compound “A” having a lone electron pair, an iodine salt. and iodine (I2). The electrolyte composition according to the present invention increases electrons in a porous film to improve a charge integration capacity and increases the open circuit voltage, thereby providing a dye sensitized solar cell with high efficiency.
    Type: Application
    Filed: June 27, 2005
    Publication date: January 26, 2006
    Inventors: Joung-Won Park, Ji-Won Lee, Wha-Sup Lee, Kwang-Soon Ahn, Jae-Man Choi, Byong-Cheol Shin
  • Publication number: 20060016473
    Abstract: A dye-sensitized solar cell using a photoelectric transformation electrode. The solar cell includes a semiconductor electrode, a counter electrode provided opposite to the semiconductor electrode, an oxide semiconductor layer provided between the semiconductor electrode and the counter electrode and having a dye adsorbed thereon, an electrolyte solution provided between the semiconductor electrode and the counter electrode, a spacer partitioning a space defined between the semiconductor electrode and the counter electrode to form at least one unit cell, and a metal wire at least partially patterned between the at least one unit cells.
    Type: Application
    Filed: June 28, 2005
    Publication date: January 26, 2006
    Inventors: Jae-Man Choi, Ji-Won Lee, Wha-Sup Lee, Kwang-Soon Ahn, Joung-Won Park, Byong-Cheol Shin
  • 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