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Researcher Information

last modified:2017/04/01

Professor TAKAHASHI Koshin

Mail Laboratory Website

Faculty, Affiliation

Faculty of Chemistry, Institute of Science and Engineering

College and School Educational Field

Division of Material Chemistry, Graduate School of Natural Science and Technology

Laboratory

 TEL:076-234-4771 FAX:076-234-4800

Academic Background

【Academic background(Doctoral/Master's Degree)】
Kanazawa University Master 197903 Completed
【Academic background(Bachelor's Degree)】
Kanazawa University 197703
【Degree】
Doctor of Science

Career

Year & Month of Birth

1954/05

Academic Society



THE JAPAN SOCIETY OF APPLIED PHYSICS

Award

Specialities

Device related chemistry、Energy engineering、Functional solid state chemistry、Organic Solar Cell Dye-sensitized Solar Cell Conjugated Polymer、Electrochemistry Photoadvanced Material

Speciality Keywords

Organic Solar Cell, Electrochemistry

Research Themes

Study on organic thin film solar cell

Study on organic thin film solar cell We have been developing lasting organic thin film solar cells which can fabricate easily in air. The organic solar cells, in which an organic active layer is sandwiched between the ITO front electrode with electron-transport-layer and the noncorrosive back electrode with hole-transport-layer, are called inverted type solar cells because the photo-generated electrons flow in reverse against normal type solar cells. Furthermore, we have been energetically investigating on the electron or hole transporting behavior at interfaces existing in the organic solar cells using an ac impedance spectroscopy, because its analysis is very important to improve the cell performance.

Efficiently electrochemical water-decomposition using electrode catalysis

The conversion of solar power to easy-to-use electric power is an important research topic. Converting solar power to chemical energy is also a very important research topic from the viewpoint of energy storage. Because we primarily develop organic thin-film solar batteries, we have a broader scope of conversion of “solar-electric-chemical energy,” instead of the direct conversion of “solar-chemical energy,” and aim at efficient water-splitting which is a conversion of “electric-chemical energy.”

Books

Papers

  •  Synthesis of Thieno[3,4-b]thiophene-Based Donor Molecules with Phenyl Ester Pendants for Organic Solar Cells: Control of Photovoltaic Properties via Single Substituent Replacement Y. Wada, Y. Asada, T. Ikai, K. Maeda, T. Kuwabara, K. Takahashi, S. Kanoh ChemistrySelect 1 703-709 2016
  •  Shape-controlled CH3NH3PbI3 nanoparticles for planar heterojunction perovskite solar cells Shahiduzzaman, Md., Yamamoto, K., Furumoto, Y., Kuwabara, T., Takahashi, K., Taima, T. Japanese Journal of Applied Physics 55 2 02BF05 2016
  •  Insertion of interlayers in efficient polymer-based organic solar cells for control of phase separation Taima, T., Tanaka, J., Kuwabara, T., Takahashi, K. Japanese Journal of Applied Physics 55 2 02BF03 2016
  •  Degradation mechanism for planar heterojunction perovskite solar cells Yamamoto, K., Furumoto, Y., Shahiduzzaman, M., Kuwabara, T., Takahashi, K., Taima, T. Japanese Journal of Applied Physics 55 4 04ES07 2016
  •  Direct observation of UV-induced accumulated charges in inverted-type polymer solar cells with TiOx layer by electron spin resonance Son, D., Yano, K., Kuwabara, T., Takahashi, K., Marumoto, K.  Molecular Crystals and Liquid Crystals 629 1 212-217 2016

show all

  •  Flexible inverted polymer solar cells fabricated in air at low temperatures Kuwabara, T, Wang, X, Kusumi, T, Taima, T, Takahashi, K.  Japanese Journal of Applied Physics 55 8 086501 2016
  •  Direct Observation of UV-Induced Charge Accumulation in Inverted-type Polymer Solar Cells with a TiOx Layer: Microscopic Elucidation of the Light-Soaking Phenomenon Son, D., Kuwabara, T., Takahashi, K., Marumoto, K.  Applied Physics Letters 109 13 133301 2016
  •  Interpenetrating heterojunction photovoltaic cells based on C60 nano-crystallized thin films  Nojiri, K., Shahiduzzaman, M., Yamamoto, K., Kuwabara, T., Takahashi, K., Taima, T.  Organic Electronic 38 1  107-114 2016
  •  Electrocatalytic activity of electrodeposited cobalt oxide films to produce oxygen gas from water  Kuwabara, T., Nishizawa, B., Nakamura, K., Takahashi, K.  Journal of Electroanalytical Chemistry 740 14-20 2015
  •  Factors affecting the photovoltaic behavior of inverted polymer solar cells using various indium tin oxide electrodes modified by amines with simple chemical structures Kusumi, T., Kuwabara, T., Yamaguchi, T., Taima, T., Takahashi, K.  Thin Solid Films 591 49-54 2015
  •  Influence of 4-fluorophenyl pendants in thieno[3,4-b]thiophene-benzo-[1,2-b:4,5-b']dithiophene-based polymers on the performance of photovoltaics Yamamoto, T., Ikai, T., Katori, S., K., Kuwabara, Takahashi, K., Kanoh, S.  Journal of Polymer Science, Part A: Polymer Chemistry 53 13 1586-1593 2015
  •  Mechanistic investigation into the light soaking effect observed in inverted polymer solar cells containing chemical bath deposited titanium oxide Kuwabara, T., Yano, K., Takahashi, K., Son, D., Marumoto, K.on, K. Marumoto Journal of Physical Chemistry C 119 10 5274-5280  2015
  •  Thieno[3,4-b]thiophene ebenzo[1,2-b:4,5-b′]dithiophene-based polymers bearing optically pure 2-ethylhexyl pendants: Synthesis and application in polymer solar cells Ikai, Tomoyuki; Kojima, Ryotaro; Katori, Sinji; Yamamoto, Tomoyuki; Kuwabara, Takayuki; Maeda, Katsuhiro; Takahashi, Kohshin; Kanoh, Shigeyoshi Polymer (United Kingdom) 56 171-177 2015 
  •  Shape-controlled CH3NH3PbI3 nanoparticles for planar heterojunction perovskite solar cells Shahiduzzaman, Md., Yamamoto, K., Furumoto, Y., Kuwabara, T., Takahashi, K., Taima, T. RSC Advances 5 95 77495-77500 2015
  •  Development of bifacial inverted polymer solar cells using a conductivity-controlled transparent PEDOT:PSS and a striped Au electrode on the hole collection side T. Kuwabara, S. Katori, K. Arima, Y. Omura, T. Yamaguchi, T. Taima, K. Takahashi Japanese Journal of Applied Physics 53 2 PART 2 02BE07 2014
  •  Effect of the solvent used to prepare the photoactive layer on the performance of inverted bulkheterojunction polymer solar cells T. Kuwabara, M. Kuzuba, N. Emoto, T. Yamaguchi, T. Taima, K. Takahashi Japanese Journal of Applied Physics 53 2 PART 2 02BE06 2014
  •  Factors affecting the performance of bifacial inverted polymer solar cells with a thick photoactive layer T. Kuwabara, Y. Omura, T. Yamaguchi, T. Taima, K. Takahashi, K. Higashimine, V. Vohra, H. Murata Journal of Physical Chemistry C 118 8 4050-4055  2014
  •  Effect of UV Light Irradiation on Photovoltaic Characteristics of Inverted Polymer Solar Cells Containing Sol-Gel Zinc Oxide Electron Collection Layer T. Kuwabara Org. Electron. 14 2 649-656 2013
  •  Fullerene acceptor for improving open-circuit voltage in inverted organic photovoltaic devices without accompanying decrease in short-circuit current density Y. Matsuo, T. Kuwabara APPLIED PHYSICS LETTERS 100 2 063303-1-3 2012
  •  Flexible inverted polymer solar cells on polyethylene terephthalate substrate containing zinc oxide electron-collection-layer prepared by novel sol–gel method and low-temperature treatments T. Kuwabara Org. Electron. 13 7 1136-1140 2012
  •  Synthesis of seleno[3,4-c]pyrrole-4,6-dione-based polymers for polymer solar cells K. Maeda, T. Ikai, T. Kuwabara SYNTHETIC METALS 162 17-18 1707- 1712 2012
  •  Synthesis and Characterization of Thieno[3,4-b]thiophene-Based Copolymers Bearing 4-Substituted Phenyl Ester Pendants: Facile Fine-Tuning of HOMO Energy Levels K. Maeda, T. Ikai, T. Kuwabara MACROMOLECULES 44 17 6659-6662 2011/08
  •  Flexible inverted polymer solar cells containing an amorphous titanium oxide electron collection electrode Organic Electronics 12 1 113-118 2011/03
  •  Mechanistic Insights into UV-Induced Electron Transfer from PCBM to Titanium Oxide in Inverted-Type Organic Thin Film Solar Cells Using AC Impedance Spectroscopy, ACS Applied Materials & Interfaces, 2/8, 2254-2260, 2010. T.Kuwabara, C.Iwata, T.Yamaguchi, K.Takahashi ACS Applied Materials & Interfaces 2 8  2254-2260 2010/08
  •  Inverted bulk-heterojunction organic solar cell using chemical bath deposited titanium oxide as electron collection layer T.Kuwabara, H.Sugiyama, M.Kuzuba, T.Yamaguchi, K.Takahashi Organic Electronics 11 6  1136-1140 2010/06
  •  Characterization of inverted type organic solar cells with ZnO layer as electron collection electrode by ac impedance spectroscopy T. Kuwabara, Y. Kawahara, T. Yamaguchi, K. Takahashi ACS Applied Materials & Interfaces 1  10 2107-2110 2009/10
  •  Inverted type bulk-heterojunction organic solar cell using electrodeposited titanium oxide thin films as electron collector electrode T. Kuwabara, H. Sugiyama, T. Yamaguchi, K. Takahashi THIN SOLID FILMS 517 13 3766-3769 2009/04
  •  Characterization of ZnS-layer-inserted bulk-heterojunction organic solar cells by ac impedance spectroscopy (1) T. Kuwabara, M. Nakamoto, Y. Kawahara, T. Yamaguchi, K. Takahashi JOURNAL OF APPLIED PHYSICS 105 12 124513 2009/06
  •  Highly durable inverted type organic solar cell using amorphous titanium oxide as electron collection electrode inserted between ITO and organic layer T. Kuwabara SOLAR ENERGY MATERIALS AND SOLAR CELLS 92 11 1476-1482 2008/09
  •  Performance Improvement by Inserting an Electrodeposited ZnO into ITO/Organic Solid Interface in Organic Solid-state Solar Cells CHEMISTRY LETTERS 34 6 768-769 2005/06
  •  Electrocatalytic Activity of Electropolymerized Meldola's blue toward Oxidation of Dopamine ELECTROCHEMISTRY 74 1 32-41 2006/01
  •  Sensitization Effect of Porphyrin Dye on the Photocurrent of Al/Polythiophene Schottky-Barrier Cells JOURNAL OF PHYSICAL CHEMISTRY B 107 2 1646-1652 2003/02
  •  Voltammetric behavior of 1,2-dihydroxy-anthraquinones attached to glassy carbon electrodes and their surface complexation with copper JOURNAL OF ELECTROANALYTICAL CHEMISTRY 490 1-2 70-78 2000/08
  •  Remarkable stability of the enhanced sharp photocurrent in methylviolet-C18 dye-sensitized photoelectrochemical cell with p-CuSCN Solar Energy Materials & Solar Cells 69 345-352 2001/01
  •  Three-layer organic solar cell with high-power conversion efficiency of 3.5% Solar Energy Materials & Solar Cells 61 403-416 2000/01
  •  Characterization of Water-soluble Externally HCl-doped Conducting Polyaniline SYNTHETIC METALS 128 1 27-33 2002/04
  •  Charge-transporting properties of electropolymerized phenosafranin in aqueous media JOURNAL OF ELECTROANALYTICAL CHEMISTRY 493 1-2 84-92 2000/11
  •  Charge transport properties of polythionine films dependent on electrode potential and solution pH ELECTROCHEMISTRY 68 1 17-23 2000/01
  •  Electrocatalytic oxidation of NADH at polythionine-modified electrodes as studied by rotating disk voltammetry ELECTROCHEMISTRY 69 3 165-170 2001/03
  •  Electrochemical growth and charge-transport properties of polyaniline/polystyrenesulfonate composite films Bull. Chem. Soc. Jpn 73 19-27 2000/01
  •  Electrostatic binding and release: incorporation of IrCl63- into polypyrrole containing viologen groups JOURNAL OF ELECTROANALYTICAL CHEMISTRY 486 2 166-174 2000/05
  •  Electrostatic Incorporation of Alizarin Red S into Poly(1-methyl-3- (pyrrol-1-ylmethyl) pyridinium) film ELECTROCHIMICA ACTA 47 11 1713-1719 2002/03
  •  Electrochemical Characteristics of Viologen Carboxylic Acid Derivatives Assembled onto Au Electrode as a Synthetic Receptor for Electron-Rich Compounds ELECTROCHIMICA ACTA 46 16 2527-2535 2001/05
  •  Junction effects of p-Cu2O photocathode with layers of hole transfer sites (Au) and electron transfer sites (NiO) at the electrolyte interface SEMICONDUCTOR SCIENCE AND TECHNOLOGY 16 433-439 2001/01
  •  Organic solid-state solar cells with a mixture of monomeric porphyrins for light-harvesting and regioregular polythiophene for charge transport SYNTHETIC METALS 123 1 91-94 2001/01
  •  pH-dependent binding interaction between functionalized thiol monolayers and electroactive ions JOURNAL OF ELECTROANALYTICAL CHEMISTRY 481 2 183-191 2000/02
  •  Performance Enhancement by Blending Merocyanine Photosensitizer in TiO2/Polythiophene Solid-state Solar Cells CHEMISTRY LETTERS 34 5 714-715 2005/05
  •  Enhanced Photocurrent by Schottky-barrier Solar Cell Composed of Regioregular Polythiophene with Merocyanine Dye SYNTHETIC METALS 130 1 177-183 2002/09
  •  Merocyanine Dye-Sensitization of Polythiophene in a Conjugated Polymer/TiO2 p-n Hetero-Junction Solar Cell BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 76 12 2277-2283 2003/12
  •  Flexible inverted polymer solar cells containing an amorphous titanium oxide electron collection electrode Sasajima, Ikumi;Uesaka, Shogo;Kuwabara, Takayuki;Yamaguchi, Takahiro;Takahashi, Kohshin ORGANIC ELECTRONICS 12 1 113-118 2011

Conference Presentations

Arts and Fieldwork

Patent

○Organic solar cell and its production process(No:US(出願)10/915857)
○Organic solar cell and its production process(No:EP(出願)0419700)

Theme to the desired joint research

Grant-in-Aid for Scientific Research

○「高分子材料創製を基軸とする高性能な逆型有機薄膜太陽電池構築のための基盤技術の確率」(2012-2014) 
○「紡織によって大面積化が可能な繊維型有機薄膜太陽電池の開発」(2012-2013) 
○「ドナー性およびアクセプター性共役高分子ブレンド膜太陽電池の色素増感による高効率化」(2002-) 
○「紡織によって大面積化が可能な繊維型有機薄膜太陽電池の開発」(2012-2013) 
○「高分子材料創製を基軸とする高性能な逆型有機薄膜太陽電池構築のための基盤技術の確立」(2012-2014) 

Classes (Bachelors)

○Laboratory Course II(2016)
○Inorganic Material Chemistry(2016)
○Fundamentals of Inorganic Chemistry(2016)
○Laboratory Course II(2016)
○Exercise III in Applied Chemistry(2016)
○Fundamental Laboratory Course in Applied Chemistry(2016)

Classes (Graduate Schools)

○Advanced Material Chemistry(2016)
○International Research Internship(2016)
○Introduction of Energy and Environmental Program(2016)
○Advanced Energy Devices(2016)
○Applied Electrochemistry(2016)
○Photo-Electrochemistry(2016)
○Solar Cell Engineering(2016)

International Project

International Students

Lecture themes

Others (Social Activities)

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