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Sensitizers Immobilized on Semiconducting Electrodes for Light Energy Conversion

Research Project

Project/Area Number 18H03898
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 32:Physical chemistry, functional solid state chemistry, and related fields
Research InstitutionKyoto University

Principal Investigator

IMAHORI Hiroshi  京都大学, 工学研究科, 教授 (90243261)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥44,070,000 (Direct Cost: ¥33,900,000、Indirect Cost: ¥10,170,000)
Fiscal Year 2020: ¥14,430,000 (Direct Cost: ¥11,100,000、Indirect Cost: ¥3,330,000)
Fiscal Year 2019: ¥14,430,000 (Direct Cost: ¥11,100,000、Indirect Cost: ¥3,330,000)
Fiscal Year 2018: ¥15,210,000 (Direct Cost: ¥11,700,000、Indirect Cost: ¥3,510,000)
Keywords人工光合成 / 色素増感太陽電池 / ポルフィリン / 有機太陽電池 / 水酸化触媒 / 半導体電極 / 銅錯体 / 太陽エネルギー変換 / 増感剤 / 増感色素
Outline of Final Research Achievements

Artificial photosynthesis is a research field focusing on material conversion by visible light, but the performance is still poor. In this project we aimed to mimic photosynthetic processes artificially and elucidate the underlying mechanism toward efficient energy conversion. We developed photoelectrochemical cells with a semiconducting electrode modified with water oxidation catalysts and molecular sensitizers with visible light-harvesting and high oxidation ability. A remarkably high power conversion efficiency was also achieved by dye-sensitized solar cells with push-pull type fused porphyrins.

Academic Significance and Societal Importance of the Research Achievements

色素増感太陽電池においては、新規な分子設計で光増感色素を合成し、現在知られている最も性能の高い色素を上回る太陽電池性能を達成できたことは大きな進展である。また、人工光合成に関しては、可視光水分解の機構解明に取り組むための評価系構築原理を明らかにできた。以上の研究成果は、今後の高効率太陽エネルギー変換に向けて重要な基礎的知見となりうる。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (56 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (6 results) Journal Article (28 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 28 results,  Open Access: 6 results) Presentation (18 results) (of which Int'l Joint Research: 16 results,  Invited: 18 results) Book (1 results) Remarks (3 results)

  • [Int'l Joint Research] The Arctic University of Norway(ノルウェー)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Tampere University of Technology(フィンランド)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Tongji University(中国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Karlsruhe Institute of Technology(ドイツ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Tampere University of Technology(フィンランド)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Tongji University(中国)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Exploration on the Combination of Push-Pull Porphyrin Dyes and Copper(I/II) Redox Shuttles toward High-Performance Dye-Sensitized Solar Cells2020

    • Author(s)
      T. Higashino, H. Iiyama, I. Nishimura, and H. Imahori
    • Journal Title

      Chem. Lett.

      Volume: 49 Issue: 8 Pages: 936-939

    • DOI

      10.1246/cl.200317

    • NAID

      130007884738

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Unique Role of Heterole-fused Structures in Aromaticity and Physicochemical Properties of 7,8-Dehydropurpurins2020

    • Author(s)
      T. Higashino, I. Nishimura, and H. Imahori
    • Journal Title

      Chem. Eur. J.

      Volume: 52 Issue: 52 Pages: 12043-12049

    • DOI

      10.1002/chem.202001361

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Heavy Metal Effects on the Photovoltaic Properties of Metallocorroles in Dye-Sensitized Solar Cells2020

    • Author(s)
      Tomohiro Higashino, Yuma Kurumisawa, Abraham B. Alemayehu, Rune F. Einrem, Debashis Sahu, Daniel Packwood, Kosaku Kato, Akira Yamakata, Abhik Ghosh and Hiroshi Imahori
    • Journal Title

      ACS Applied Energy Materials

      Volume: 3 Issue: 12 Pages: 12460-12467

    • DOI

      10.1021/acsaem.0c02427

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effect of Ligand Structures of Copper Redox Shuttles on Photovoltaic Performance of Dye-Sensitized Solar Cells2020

    • Author(s)
      T. Higashino, H. IIyama, S. Nimura, Y. Kurumisawa, and H. Imahori
    • Journal Title

      Inorg. Chem.

      Volume: 59 Issue: 1 Pages: 452-459

    • DOI

      10.1021/acs.inorgchem.9b02740

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Modulation of Frontier Molecular Orbitals on Dithieno[3,4-b:3’,4’-d]phosphole Derivatives by Donor-pi-Acceptor Interaction2020

    • Author(s)
      T. Higashino, K. Ishida, and H. Imahori
    • Journal Title

      Chem. Lett.

      Volume: 49 Issue: 3 Pages: 272-275

    • DOI

      10.1246/cl.190879

    • NAID

      130007805929

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Sustained photodynamic effect of single chirality-enriched single-walled carbon nanotubes2020

    • Author(s)
      Fukuda, R.; Umeyama, T.; Tsujimoto, M.; Ishidate, F.; Tanaka, T.; Kataura, H.; Imahori, H.; Murakami, T.
    • Journal Title

      Carbon

      Volume: 161 Pages: 718-725

    • DOI

      10.1016/j.carbon.2020.02.002

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of meso-Diarylamino Group of Porphyrins on Optical and Electrochemical Properties2020

    • Author(s)
      T. Higashino, Y. Fujimori, I. Nishimura, and H. Imahori
    • Journal Title

      J. Porphyrins Phthalocyanines

      Volume: 24 Issue: 01n03 Pages: 67-74

    • DOI

      10.1142/s1088424619500652

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Efficient Light-Harvesting, Energy Migration, and Charge Transfer by Nanographene-Based Nonfullerene Acceptor Small-Molecule Exhibiting Unusually Long Excited-State Lifetime in Film State2020

    • Author(s)
      T. Umeyama, K. Igarashi, D. Sasada, Y. Tamai, K. Ishida, T. Koganezawa, S. Ohtani, K. Tanaka, H. Ohkita, and H. Imahori
    • Journal Title

      Chem. Sci.

      Volume: 11 Issue: 12 Pages: 3250-3257

    • DOI

      10.1039/c9sc06456g

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Pluripotent Features of Doubly Thiophene‐Fused Benzodiphospholes as Organic Functional Materials2019

    • Author(s)
      Higashino Tomohiro、Ishida Keiichi、Sakurai Tsuneaki、Seki Shu、Konishi Tatsuki、Kamada Kenji、Kamada Kenji、Imahori Hiroshi
    • Journal Title

      Chemistry - A European Journal

      Volume: 印刷中 Issue: 25 Pages: 6425-6438

    • DOI

      10.1002/chem.201900661

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Renaissance of Fused Porphyrins: Substituted Methylene-bridged Thiophene-Fused Strategy for High-Performance Dye-Sensitized Solar Cells2019

    • Author(s)
      Y. Kurumisawa, T. Higashino, S. Nimura, Y. Tsuji, H. Iiyama, and H. Imahori
    • Journal Title

      J. Am. Chem. Soc.

      Volume: 141 Issue: 25 Pages: 9910-9919

    • DOI

      10.1021/jacs.9b03302

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Exclusive Occurrence of Photoinduced Energy Transfer and Switching Its Direction by Rectangular π-Extension of Nanographenes2019

    • Author(s)
      T. Umeyama, T. Hanaoka, H. Yamada, Y. Namura, S. Mizuno, T. Ohara, J. Baek, J. Park, Y. Takano, K. Stranius, N. V. Tkachenko, and H. Imahori
    • Journal Title

      Chem. Sci.

      Volume: 10 Issue: 27 Pages: 6642-6650

    • DOI

      10.1039/c9sc01538h

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Photoconductivity in Metal-Organic Framework (MOF) Thin Films2019

    • Author(s)
      X. Liu, M. Kozlowska, T. Okkali, D. Wagner, T. Higashino, G. Brenner-Weis, S. Marschner, Z. Fu, Q. Zhang, H. Imahori, S. Brase, W. Wenzel, C. Woll, and L. Heinke
    • Journal Title

      Angew. Chem. Int. Ed.

      Volume: 58 Issue: 28 Pages: 9590-9595

    • DOI

      10.1002/anie.201904475

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Thiazolocatechol: Electron-withdrawing Catechol Anchoring Group for Dye-Sensitized Solar Cells2019

    • Author(s)
      T. Higashino, H. Iiyama, Y. Kurumisawa, and H. Imahori
    • Journal Title

      ChemPhysChem

      Volume: 20 Issue: 20 Pages: 2689-2695

    • DOI

      10.1002/cphc.201900342

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Isomer Effects of Fullerene Derivatives on Organic Photovoltaics and Perovskite Solar Cells2019

    • Author(s)
      T. Umeyama and H. Imahori
    • Journal Title

      Acc. Chem. Res.

      Volume: 52 Issue: 8 Pages: 2046-2055

    • DOI

      10.1021/acs.accounts.9b00159

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effective Role of Eco-Friendly Acetyl Tributyl Citrate in Large-Scale Catalyst-Free Synthesis of Waterborne Polyurethanes Without Volatile Organic Compounds2019

    • Author(s)
      X.-G. Li, Y.-B. Xie, M.-R. Huang, T. Umeyama, T. Ohara and H. Imahori
    • Journal Title

      J. Clean. Prod.

      Volume: 237 Pages: 117543-117543

    • DOI

      10.1016/j.jclepro.2019.07.018

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Spontaneous Complexation of Fullerenes on Nanodiamond Aggregates and Their Enhanced Photocurrent Generation2019

    • Author(s)
      T. Umeyama, Y. Okawada, T. Ohara, and H. Imahori
    • Journal Title

      Chem. Asian J.

      Volume: 14 Issue: 22 Pages: 4042-4047

    • DOI

      10.1002/asia.201900835

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Phosphole-Fused Dehydropurpurins via Titanium-Mediated [2+2+1] Cyclization Strategy2019

    • Author(s)
      T. Higashino, I. Nishimura, and H. Imahori
    • Journal Title

      Chem. Eur. J.

      Volume: 25 Issue: 60 Pages: 13816-13823

    • DOI

      10.1002/chem.201903269

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cleaner Synthesis and Systematical Chracterization of Sustainable Poly(isosorbide-co-ethylene terephthalate) by Environ-Benign and Highly Active Catalysts2019

    • Author(s)
      X.-G. Ki, G. Song, M.-R. Huang, T. Ohara, H. Yamada, T. Umeyama, T. Higashino, and H. Imahori
    • Journal Title

      J. Clean. Prod.

      Volume: 206 Pages: 483-497

    • DOI

      10.1016/j.jclepro.2018.09.046

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Synthesis of Phosphole-bridged Porphyrin Dimers2019

    • Author(s)
      Higashino Tomohiro、Nishimura Issei、Imahori Hiroshi
    • Journal Title

      Chemistry Letters

      Volume: 48 Issue: 3 Pages: 257-259

    • DOI

      10.1246/cl.180943

    • NAID

      130007607563

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] cis-1 Isomers of Tethered Bismethano[70]fullerene as Electron Acceptors in Organic Photovoltaics2018

    • Author(s)
      T. Umeyama, S. Takahara, S. Shibata, K. Igarashi, T. Higashino, K. Mishima, K. Yamashita, and H. Imahori
    • Journal Title

      RSC Adv.

      Volume: 8 Issue: 33 Pages: 18316-18326

    • DOI

      10.1039/c8ra02896f

    • NAID

      120006534623

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Enhanced Donor-π-Acceptor Character of A Porphyrin Dye Incorporating Naphthobisthiadiazole for Efficient Near Infrared Light Absorption2018

    • Author(s)
      T. Higashino, Y. Kurumisawa, S. Nimura, H. Iiyama, and H. Imahori
    • Journal Title

      Eur. J. Org. Chem.

      Volume: 2018 Issue: 20-21 Pages: 2537-2547

    • DOI

      10.1002/ejoc.201701736

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Photophysical Properties of Porphyrin Dimer-Single-Walled Carbon Nanotube Linked Systems2018

    • Author(s)
      J. Baek, T. Umeyama, S. Mizuno, N. V. Tkachenko, and H. Imahori
    • Journal Title

      J. Phys. Chem. C

      Volume: 印刷中 Issue: 25 Pages: 13285-13293

    • DOI

      10.1021/acs.jpcc.7b08594

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Unique Tube-Ring Interactions: Complexation of Single-Walled Carbon Nanotubes with Cycloparaphenyleneacetylenes2018

    • Author(s)
      K. Miki, K. Saiki, T. Umeyama, J. Baek, T. Noda, H. Imahori, Y. Sato, K. Suenaga, and K. Ohe
    • Journal Title

      Small

      Volume: 14 Issue: 26

    • DOI

      10.1002/smll.201800720

    • NAID

      120006540187

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Calix[5]phyrin for Fluoride Ion Sensing with Visible and Near Infrared Optical Responses2018

    • Author(s)
      Higashino Tomohiro、Kumagai Atsushi、Imahori Hiroshi
    • Journal Title

      Chemistry - An Asian Journal

      Volume: 13 Issue: 16 Pages: 2019-2022

    • DOI

      10.1002/asia.201800856

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Reversible π-system switching of thiophene-fused thiahexaphyrins by solvent and oxidation/reduction2018

    • Author(s)
      Higashino Tomohiro、Kumagai Atsushi、Sakaki Shigeyoshi、Imahori Hiroshi
    • Journal Title

      Chemical Science

      Volume: 9 Issue: 38 Pages: 7528-7539

    • DOI

      10.1039/c8sc02448k

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of Silicon Surface for Perovskite/Silicon Tandem Solar Cells: Flat or Textured?2018

    • Author(s)
      H. Kanda, N. Shibayama, A. Uzum, T. Umeyama, H. Imahori, K. Ibi, and S. Ito
    • Journal Title

      ACS Appl. Mater. Interfaces

      Volume: 10 Issue: 41 Pages: 35016-35024

    • DOI

      10.1021/acsami.8b08701

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ABC-ABC-Type Directly meso-meso Linked Porphyrin Dimers2018

    • Author(s)
      Higashino Tomohiro、Kurumisawa Yuma、Iiyama Hitomi、Imahori Hiroshi
    • Journal Title

      Chemistry - A European Journal

      Volume: 25 Issue: 2 Pages: 538-547

    • DOI

      10.1002/chem.201805405

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Photodynamics of Functionalized Nanocarbons: Effect of Electronic Coupling and Donor Dimerization2018

    • Author(s)
      T. Umeyama and H. Imahori
    • Journal Title

      Nanoscale Horiz.

      Volume: 印刷中 Issue: 4 Pages: 352-366

    • DOI

      10.1039/c8nh00024g

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 分子工学に基づいた有機太陽電池材料の創製2020

    • Author(s)
      今堀博
    • Organizer
      近畿化学協会機能性色素部会第101回例会「有機太陽電池の最新動向と新展開」
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Donor-Acceptor Interactions for Energy and Biological Applications2020

    • Author(s)
      H. Imahori
    • Organizer
      86th Annual Meeting of the Chemical Society of Japan
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Model Systems and Organic Solar Cells for Solar Energy Conversion2019

    • Author(s)
      H. Imahori
    • Organizer
      Pre-ECS Symposium
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Isomer Effects of Nanocarbons in Organic Solar Cells2019

    • Author(s)
      H. Imahori
    • Organizer
      235th Meeting of The Electrochemical Society
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Porphyrins as Excellent Sensitizers and Electron and Energy Donors2019

    • Author(s)
      H. Imahori
    • Organizer
      The First Asian Conference on Porphyrins, Phthalocyanines, and Related Materials (ACPP-1)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Model Systems and Organic Solar Cells toward Highly Efficient Solar Energy Conversion2019

    • Author(s)
      H. Imahori
    • Organizer
      The 9th East Asia Symposium on Functional Dyes and Advanced Materials
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Donor-Acceptor Interaction for Solar Energy Conversion2019

    • Author(s)
      H. Imahori
    • Organizer
      The 1st Kyoto University -UNIST Joint Symposium on Chemistry and Materials Science
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Donor-Acceptor Interactions for Solar Energy Conversion2019

    • Author(s)
      H. Imahori
    • Organizer
      2019 National Chung Hsing University-Kyoto University Symposium on Advanced Chemistry
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Model Systems and Organic Photovoltaics2019

    • Author(s)
      H. Imahori
    • Organizer
      The 10th Asian Conference on Electrochemical Power Sources 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Model Systems for Photosynthesis and Organic Photovoltaics2019

    • Author(s)
      H. Imahori
    • Organizer
      The 18th Asian Chemcial Congress (ACC) and 20th General Assembly of the Federation of Asian Chemcial Societies (FACS)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Molecular Engineering of Organic Photovoltaics and Solar Fuels2019

    • Author(s)
      H. Imahori
    • Organizer
      28th Inter-American Photochemcial Society (I-APS) Winter Meeting
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Visible Light-Driven Watern Oxidtion with Porphyrin Sensitizers and Water Oxidtion Catalysts2018

    • Author(s)
      H. Imahori
    • Organizer
      233rd Meeting of The Electrochemical Society
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Exciplex Formation and Decay in Porphyrin-Carbon Nanotube Ensembles2018

    • Author(s)
      H. Imahori
    • Organizer
      233rd Meeting of The Electrochemical Society
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Porphyrins as Excellent Sensitizers for Energy and Biological Applications2018

    • Author(s)
      H. Imahori
    • Organizer
      International Conference on Porphyrins and Phthalocyanines (ICPP-10)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Mimicking Photosynthesis for Photoinduced Charge Separation and Solar Energy Conversion2018

    • Author(s)
      H. Imahori
    • Organizer
      The 22nd International Conference on Photochemical Conversion and Storage of Solar Energy (IPS-22)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Molecular Engineering for Bulk Heterojunction and Dye-Sensitized Organic Solar Cells2018

    • Author(s)
      H. Imahori
    • Organizer
      International Conference on Energy and Environmental Materials (ICEEM 2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Porphyrins for Photoinduced Charge Separation and Solar Energy Conversion2018

    • Author(s)
      H. Imahori
    • Organizer
      Asian Workshop on Frontiers of Porphyrins and Phthalocyanines
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Molecular Engineering for Photoinduced Charge Separation and Solar Energy Conversion2018

    • Author(s)
      H. Imahori
    • Organizer
      10th Asian Photochemistry Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Book] 未来を拓く多彩な色素材料2021

    • Author(s)
      今堀博(分担執筆)
    • Total Pages
      194
    • Publisher
      化学同人(日本化学会編)
    • ISBN
      9784759814002
    • Related Report
      2020 Annual Research Report
  • [Remarks] 最近の論文から

    • URL

      http://www.moleng.kyoto-u.ac.jp/~moleng_05/research_paper.html

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
  • [Remarks] 新規色素設計指針を開発 -世界最高の太陽光エネルギー変換効率の実現に向けて-

    • URL

      http://www.kyoto-u.ac.jp/ja/research/research_results/2019/190613_2.html

    • Related Report
      2019 Annual Research Report
  • [Remarks] 新しい電子受容性材料の設計指針を開発 -有機薄膜太陽電池をより高効率により簡便に-

    • URL

      http://www.kyoto-u.ac.jp/ja/research/research_results/2019/200306_1.html

    • Related Report
      2019 Annual Research Report

URL: 

Published: 2018-04-23   Modified: 2022-01-27  

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