Patents by Inventor Liyuan Han

Liyuan Han 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: 20050257826
    Abstract: A dye-sensitized solar cell comprising a first support, a first conductive layer, a porous photovoltaic layer containing a dye, a carrier transport layer and a second conductive layer stacked in this order, wherein the length of contact side of the porous photovoltaic layer closed to the first conductive layer is different from that of its confronted side of the porous photovoltaic layer.
    Type: Application
    Filed: April 6, 2005
    Publication date: November 24, 2005
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Ryohsuke Yamanaka, Liyuan Han
  • Publication number: 20050229966
    Abstract: Provided is a dye-sensitized solar cell having improved stability of safety and performance by employing a non-volatile molten salt which makes it possible to facilitate the control over the composition of gel electrolyte, simplify the working step during production and give an excellent conversion efficiency.
    Type: Application
    Filed: September 22, 2003
    Publication date: October 20, 2005
    Inventors: Ryoichi Komiya, Ryohsuke Yamanaka, Liyuan Han, Takehito Mitate, Eriko Ishiko, Michiyuki Kono
  • Publication number: 20050150544
    Abstract: The present invention provides a dye-sensitized solar cell including: a transparent electrode; a counter electrode; a porous semiconductor layer having a dye sensitizer adsorbed therein; and a carrier transport layer containing an electrolytic solution therein, the porous semiconductor layer and the carrier transport layer being located between the transparent electrode and the counter electrode, wherein the electrolytic solution contains a heterocyclic compound comprising a heteroatom in the ring.
    Type: Application
    Filed: December 2, 2004
    Publication date: July 14, 2005
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Atsushi Fukui, Ryohsuke Yamanaka, Ryoichi Komiya, Liyuan Han
  • Publication number: 20050139257
    Abstract: A photosensitizer complex of formula (I) MLX2 in which M is a transition metal selected from ruthenium, osmium, iron, rhenium and technetium; each X is a co-ligand independently selected from NCS?, Cl?, Br?, I?, CN?, H2O; pyridine unsubstituted or substituted by at least one group selected from vinyl, primary, secondary or tertiary amine, OH and C1-30 alky, preferably NSC? and CN?. L is a tetradentate polypyridine ligand, carrying at least one carboxylic, phosphoric acid or a chelating group and one substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, substituted or unsubstituted alkylamide group having 2 to 30 carbon atoms or substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms. A dye-sensitized electrode includes a substrate having an electrically conductive surface, an oxide semiconductor film formed thereon, and the above sensitizer of formula (I) as specified above, supported on the film.
    Type: Application
    Filed: December 22, 2004
    Publication date: June 30, 2005
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Ashraful Islam, Liyuan Han, Atsushi Fukui
  • Publication number: 20050081911
    Abstract: A photosensitizing transition metal complex of the formula (Ia) MLY1, (Ib) MLX3 (Ic) MLY2X, (Id) MLY3X or (Ie) MLY4X in which M is a transition metal selected from ruthenium, osmium, iron, rhenium and technetium, preferably ruthenium or osmium. X is a co-ligand independently selected from NCS—, Cl—, Br—, I—, CN—, H2O; pyridine unsubstituted or substituted by at least one group selected from vinyl, primary, secondary or tertiary amine, OH and C1-30 alkyl, preferably NSC and CN—; L is a tridentate polypyridine ligand, carrying at least one carboxylic, phosphoric acid or a chelating group and one substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, substituted or unsubstituted alkylamide group having 2 to 30 carbon atoms or substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms.
    Type: Application
    Filed: October 15, 2004
    Publication date: April 21, 2005
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Ashraful Islam, Liyuan Han, Atsushi Fukui
  • Publication number: 20050076949
    Abstract: The invention provides a dye-sensitized solar cell including a transparent substrate, a transparent conductive film formed on a surface thereof, and a conductive substrate provided in a position opposed to the transparent conductive film, and further having a porous semiconductor layer, in which a dye is adsorbed, and an electrolyte between the transparent conductive film and the conductive substrate, wherein the electrolyte is a gel electrolyte containing a redox material and a solvent capable of dissolving the same in a network structure formed by crosslinking at least one kind of compound A including an isocyanate group and at least one kind of compound B including an amino group. Otherwise, the electrolyte is a gel electrolyte containing a redox material and a solvent capable of dissolving the same in a network structure formed by crosslinking at least one kind of compound A including an isocyanate group and at least one kind of compound C including a carboxyl group and/or a hydroxyl group.
    Type: Application
    Filed: March 20, 2002
    Publication date: April 14, 2005
    Inventors: Ryoichi Komiya, Liyuan Han, Ryohsuke Yamanaka, Eriko Ishiko, Michiyuki Kono
  • Publication number: 20040221888
    Abstract: A dye-sensitized solar cell comprising a transparent conductive layer, a porous semiconductor layer on which a dye sensitizer is adsorbed, a carrier transport layer and an counter electrode which are formed in this order on a transparent substrate,
    Type: Application
    Filed: April 2, 2004
    Publication date: November 11, 2004
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Atsushi Fukui, Liyuan Han
  • Patent number: 6677516
    Abstract: A dye-sensitized photovoltaic cell comprising an electroconductive support, a porous photovoltaic layer constituted with a porous semiconductor layer containing a photosensitizing dye, a hole transporting layer, and a support on a counter electrode side, the porous photovoltaic layer having a multi-layer structure, and the semiconductor layer having a haze ratio at a wavelength in a visible light region of 60% or more.
    Type: Grant
    Filed: January 29, 2002
    Date of Patent: January 13, 2004
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yasuo Chiba, Masafumi Shimizu, Liyuan Han, Ryohsuke Yamanaka
  • Publication number: 20030140963
    Abstract: A photovoltaic cell comprises: an anode electrode including a conductive support and a porous semiconductor layer; a photosensitive dye; a charge transport layer; and a counter electrode support, wherein the anode electrode has the property of causing cathode luminescence having a luminous peak wavelength in a visible region and shows a haze rate H of 60% or more at a wavelength in the visible region.
    Type: Application
    Filed: January 10, 2003
    Publication date: July 31, 2003
    Inventors: Ryohsuke Yamanaka, Naoki Koide, Liyuan Han, Yasuo Chiba, Hisako Imai, Takehito Mitate
  • Patent number: 6479745
    Abstract: A dye-sensitized solar cell comprising a porous semiconductor layer in which a dye is adsorbed and an electrolyte which are sandwiched between a transparent conductive film formed on a surface of a transparent substrate and a conductive substrate, wherein the electrolyte is retained in a crosslinked polymer compound.
    Type: Grant
    Filed: January 25, 2001
    Date of Patent: November 12, 2002
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Ryosuke Yamanaka, Liyuan Han, Kazuhiro Emoto
  • Patent number: 6469243
    Abstract: A dye-sensitizing solar cell comprising: a first substrate whose surface is at least conductive; a second substrate on which a conductive layer is formed, the second substrate being transparent, the first and second substrates being spaced by a distance with the conductive surfaces of the first and second substrates opposite to each other; a semiconductor layer having a dye adsorbed thereon, the semiconductor layer being formed on one of the conductive surfaces; a glass frit for sealing peripheral edges of the first and second substrates; and a redox electrolyte which is filled between the first and second substrates.
    Type: Grant
    Filed: December 27, 2000
    Date of Patent: October 22, 2002
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Ryosuke Yamanaka, Liyuan Han
  • Publication number: 20020134426
    Abstract: A dye-sensitized photovoltaic cell comprising an electroconductive support, a porous photovoltaic layer constituted with a porous semiconductor layer containing a photosensitizing dye, a hole transporting layer, and a support on a counter electrode side, the porous photovoltaic layer having a multi-layer structure, and the semiconductor layer having a haze ratio at a wavelength in a visible light region of 60% or more.
    Type: Application
    Filed: January 29, 2002
    Publication date: September 26, 2002
    Inventors: Yasuo Chiba, Masafumi Shimizu, Liyuan Han, Ryohsuke Yamanaka
  • Patent number: 6452092
    Abstract: A photovoltaic cell comprises an electrode layer, a photovoltaic layer, a hole transport layer, a conductive layer and a counter electrode layer stacked in this order.
    Type: Grant
    Filed: January 19, 2001
    Date of Patent: September 17, 2002
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Liyuan Han, Ryosuke Yamanaka
  • Publication number: 20010032665
    Abstract: A photovoltaic cell comprises an electrode layer, a photovoltaic layer, a hole transport layer, a conductive layer and a counter electrode layer stacked in this order.
    Type: Application
    Filed: January 19, 2001
    Publication date: October 25, 2001
    Inventors: Liyuan Han, Ryosuke Yamanaka
  • Publication number: 20010027806
    Abstract: A dye-sensitized solar cell comprising a porous semiconductor layer in which a dye is adsorbed and an electrolyte which are sandwiched between a transparent conductive film formed on a surface of a transparent substrate and a conductive substrate, wherein the electrolyte is retained in a crosslinked polymer compound.
    Type: Application
    Filed: January 25, 2001
    Publication date: October 11, 2001
    Inventors: Ryosuke Yamanaka, Liyuan Han, Kazuhiro Emoto
  • Publication number: 20010004901
    Abstract: A dye-sensitizing solar cell comprising: a first substrate whose surface is at least conductive; a second substrate on which a conductive layer is formed, the second substrate being transparent, the first and second substrates being spaced by a distance with the conductive surfaces of the first and second substrates opposite to each other; a semiconductor layer having a dye adsorbed thereon, the semiconductor layer being formed on one of the conductive surfaces; a glass frit for sealing peripheral edges of the first and second substrates; and a redox electrolyte which is filled between the first and second substrates.
    Type: Application
    Filed: December 27, 2000
    Publication date: June 28, 2001
    Inventors: Ryosuke Yamanaka, Liyuan Han
  • Patent number: 6150605
    Abstract: A photovoltaic cell has a structure including a first electrode layer, a first photovoltaic layer, an electrically conductive layer, a second photovoltaic layer and a second electrode layer that are successively laminated, wherein the first photovoltaic layer is a semiconductor film containing a first colorant, the second photovoltaic layer is a semiconductor film containing a second colorant, the first colorant and the second colorant being different from each other, so that the first photovoltaic layer and the second photovoltaic layer have different photocurrent action spectra.
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: November 21, 2000
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Liyuan Han
  • Patent number: 6043428
    Abstract: A photoelectric material having high efficiency and superior durability is provided. The photoelectric material includes a semiconductor and a photosensitizing dye attached to the semiconductor, wherein the dye is a phthalocyanine derivative, a dioxazine derivative or an indigo derivative having at least one interlocking group and at least one hydrophobic group selected from the group consisting of monovalent substituted and unsubstituted aliphatic hydrocarbon groups and monovalent substituted and unsubstituted alicyclic hydrocarbon groups. The hydrophobic group is preferably an alkyl group with 3 to 12 carbon atoms. The interlocking group is a carboxyl group, a sulfonic acid group, phosphono group or the like. In manufacturing the photoelectric material, the dye is dissolved in a hydrophobic and/or aprotic solvent. In order to attach the dye to the semiconductor, the semiconductor is dipped in the dye solution.
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: March 28, 2000
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Liyuan Han, Takatsugu Obata, Yuko Inoue
  • Patent number: 5908721
    Abstract: The color filter having pixels and a light-shading colored layer on a transparent substrate is provided. The light-shading colored layer is formed from hydrophilic light-shading colored ink, and the hydrophilic light-shading colored ink includes a resin having a monomer unit having a quaternary ammonium salt moiety represented by formula (I):--COO.sup..crclbar. X.sup..sym. (I)wherein X.sup.+ is represented by formula (II): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are independently hydrogen, a substituted or non-substituted linear or branched alkyl group having 1 to 12 carbon atoms, or a substituted or non-substituted linear or branched alkenyl group having 2 to 8 carbon atoms.
    Type: Grant
    Filed: February 7, 1997
    Date of Patent: June 1, 1999
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kazuhiro Emoto, Yoshihiro Izumi, Liyuan Han