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Development of Size-Selective Close-Spaced Sublimation Process and its Application to High-Performance Photocathodes for Water Reduction

Research Project

Project/Area Number 21K19033
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 36:Inorganic materials chemistry, energy-related chemistry, and related fields
Research InstitutionKonan University

Principal Investigator

Ikeda Shigeru  甲南大学, 理工学部, 教授 (40312417)

Co-Investigator(Kenkyū-buntansha) 野瀬 嘉太郎  京都大学, 工学研究科, 准教授 (00375106)
Project Period (FY) 2021-07-09 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2023: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Keywords化合物半導体 / 昇華性 / ナノ構造制御 / 半導体光電極 / 光エネルギー変換 / 水分解水素発生 / 昇華性半導体 / ナノ構造形成 / 光電極 / 水分解材料 / ナノ構造 / 昇華
Outline of Research at the Start

毛細管凝縮は、毛細管内の液体の表面張力から導かれる気相-液相間の平衡に適用される一方、気相-固相間の平衡においても、毛細管内で昇華曲線の低圧側シフトが予測される。本研究では、この昇華点降下現象を実証・適用し、近接昇華によるp型半導体ナノロッドの自立配向基板を作製する。また、p型-n型無機半導体界面(ミクロpn接合)を形成させ、これを利用する高機能水分解水素発生電極の実現を目指す。

Outline of Final Research Achievements

Purposes of this work are demonstration of sublimation point depression phenomenon in the equilibrium between the gas and solid phases and its applications for developing functional materials with controlled nanostructure. Firstly, investigations of the selective filling of tin(II) sulphide as a sublimable compound semiconductor into the ordered pores of a porous alumina membrane were carried out; several experimental results suggest the occurrence of preferential condensation in the pores of the porous alumina membrane. In the course of our research, we also found a method for forming nanosized step structures on the surface of single-crystalline oxide particles; this induced appreciable improvements of photocatalytic activity for overall water splitting. We also studied photoelectrochemical water splitting using ZnTe thin films, which are sublimable semiconductors, and obtained results suggesting hydrogen generation via two-photon absorption through intermediate bands.

Academic Significance and Societal Importance of the Research Achievements

昇華したSnSの結晶化をナノ細孔中の空間だけで生じさせるには、気相-固相間の毛細管凝縮を生じさせる必要がある。これは、気相-固相平衡を取り扱う原理的課題であり、その実証には熱力学データから算出されるSnSの昇華曲線を参照にしつつ、温度、圧力条件などを最適化する検証実験を要するが、達成されれば、多様な昇華性化合物の高結晶性かつ高純度なナノ構造体を創出する革新的な手法となると考えられる。また、ここで得られたナノ構造制御による光電極および光触媒の高機能化は、いまだ社会実装されていないそれらの系を、実装に近づけるための一つの方向性を示す成果であると考えられる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (19 results)

All 2024 2023 2022 2021

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (14 results) (of which Int'l Joint Research: 6 results,  Invited: 2 results)

  • [Journal Article] Characterization of the electronic structure of sputter-deposited Mo-doped BiVO<sub>4</sub> thin-film photoanodes2024

    • Author(s)
      Oktariza Lingga Ghufira、Sato Yuta、Gofurov Shukur、Ozawa Kenichi、Islam Muhammad Monirul、Ikeda Shigeru、Sakurai Takeaki
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 63 Issue: 2 Pages: 02SP41-02SP41

    • DOI

      10.35848/1347-4065/ad12ac

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] An efficient particulate photocatalyst for overall water splitting based on scandium and magnesium co-doped strontium titanate2024

    • Author(s)
      Ikeda Shigeru、Okamoto Riku、Kimura Akira、Nakayasu Yuhi、Yamakata Akira、Tomizawa Ryota、Masuda Taizo、Nakatani Koichiro
    • Journal Title

      Sustainable Energy &amp; Fuels

      Volume: 8 Issue: 2 Pages: 202-209

    • DOI

      10.1039/d3se01408h

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Crystalline-face-dependent photoelectrochemical properties of single crystalline CuGaSe2 photocathodes for hydrogen evolution under sunlight radiation2023

    • Author(s)
      Ikeda Shigeru、Fujita Wakaba、Katsube Ryoji、Nose Yoshitaro、Suzuki Hajime、Abe Ryu、Yoshino Kenji
    • Journal Title

      Electrochimica Acta

      Volume: 454 Pages: 142384-142384

    • DOI

      10.1016/j.electacta.2023.142384

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chalcopyrite CuGaSe<sub>2</sub> thin film for photoelectrochemical water splitting into hydrogen2023

    • Author(s)
      Ikeda Shigeru、Shogo Ishizuka
    • Journal Title

      JSAP Review

      Volume: 2023 Issue: 0 Pages: n/a

    • DOI

      10.11470/jsaprev.230413

    • ISSN
      2437-0061
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Copper-based kesterite thin films for photoelectrochemical water splitting2021

    • Author(s)
      S. Ikeda
    • Journal Title

      High Temp. Mater. Process.

      Volume: 40 Issue: 1 Pages: 446-460

    • DOI

      10.1515/htmp-2021-0050

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] ZnTeO中間バンド型光電極におけるn型窓層材料の検討2023

    • Author(s)
      園山天暉, 齊藤勝彦, 郭 其新, 池田 茂, 田中 徹
    • Organizer
      2023年応用物理学会秋季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 水熱法により調製したSrTiO3粉末を原料として用いた高活性水分解光触媒の合成2023

    • Author(s)
      山口 響, 木村 昭, 野瀬嘉太郎, 池田 茂
    • Organizer
      2023年応用物理学会秋季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Tetrahedral π-SnS particles as photocatalyst for hydrogen production2023

    • Author(s)
      D. Xiangxin, I. Sumiyoshi, Y. Nose, S. Ikeda
    • Organizer
      2023年応用物理学会秋季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 異なるn型窓層を用いたZnTeO中間バンド型光電極の光電気化学特性2023

    • Author(s)
      園山天暉, 齊藤勝彦, 郭 其新, 池田 茂, 田中 徹
    • Organizer
      第5回フロンティア太陽電池セミナー
    • Related Report
      2023 Annual Research Report
  • [Presentation] Effects of doping of rare earth elements on activity of SrTiO3-based photocatalysts for overall water splitting2023

    • Author(s)
      S. Ikeda, R. Okamoto, R. Tomizawa, T. Masuda, K. Nakatani
    • Organizer
      The 31st International Conference on Photochemistry (ICP2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Control of size and faceting of emerging tetrahedral π-SnS particles2023

    • Author(s)
      D. Xiangxin, I. Sumiyoshi, Y. Nose, S. Ikeda
    • Organizer
      34th International Photovoltaic Science and Engineering Conference (PVSEC-34)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 分子線エピタキシー法によるZnTeO薄膜の成長と光電極への応用2023

    • Author(s)
      園山天暉, 齋藤勝彦, 郭 其新, 池田 茂, 田中 徹
    • Organizer
      2023年応用物理学会春季講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] SrTiO3水分解光触媒の高機能化-希土類酸化物の添加効果-2022

    • Author(s)
      岡本 陸, 富澤亮太, 増田泰造, 中谷好一郎, 木村 昭, 池田 茂
    • Organizer
      2022年度多元系化合物・太陽電池研究会年末講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] Effects of rare-earth metal addition on photocatalytic activity of aluminum-doped strontium titanate for overall water splitting2022

    • Author(s)
      R. Okamoto, R. Tomizawa, K.-i. Okumura, T. Masuda, A. Kimura, S. Ikeda
    • Organizer
      The 9th Tokyo Conference on Advanced Catalytic Science and Technology
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Enhancements of photoelectrochemical water reduction properties of CuGaSe2 thin film-based photocathodes induced by intentional loading of a Cu-deficient layer at the p-n heterointerface2022

    • Author(s)
      R. Okamoto, S. Ishizuka, S. Ikeda
    • Organizer
      33rd International Photovoltaic Science and Engineering Conference
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Chalcopyrite and Kesterite Compound Thin Films as Active Photocathodes for Water Reduction into Hydrogen Gas2022

    • Author(s)
      S. Ikeda
    • Organizer
      73rd Annual Meeting of the International Society of Electrochemistry
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 高活性SrTiO3水分解光触媒の合成:希土類酸化物の添加効果2022

    • Author(s)
      岡本 陸, 池田 茂, 木村 昭, 富澤亮太, 増田泰造, 奥村健一
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 分子線エピタキシー成長によるZnTe光電極を用いた水の還元反応の評価2022

    • Author(s)
      堤 龍介,吉永智大,齊藤勝彦,郭 其新,池田 茂,田中 徹
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Photoelectrochemical Applications of Chalcopyrite and Kesterite Compound Thin Films2021

    • Author(s)
      S. Ikeda
    • Organizer
      The 4th Energy Future Conference (EF4)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2021-07-13   Modified: 2025-01-30  

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