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Development of novel solar-cell materials based on perovskite-type sulfides

Research Project

Project/Area Number 22K14752
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 36010:Inorganic compounds and inorganic materials chemistry-related
Research InstitutionThe University of Tokyo

Principal Investigator

Nagai Takayuki  東京大学, 大学院工学系研究科(工学部), 特任助教 (30851018)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2023: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2022: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywordsペロブスカイト型構造 / 太陽電池 / 化学ドーピング / 硫化物 / キャリア制御 / ペロブスカイト / 半導体 / 第一原理計算 / カルコゲナイド
Outline of Research at the Start

本研究は、次世代太陽電池材料の候補であるペロブスカイト型硫化物BaZrS3に着目し、課題であった化学修飾によるキャリアドーピング手法の確立と本物質を基盤とした太陽電池デバイスの作製を試みるものである。各原子サイトの欠陥耐性に対する考察から、各サイトに適した合成手法を採用して化学修飾によるn型およびp型半導体化を目指す。BaZrS3に限らずペロブスカイト型硫化物は優れた光学特性をもつ半導体材料群であることが知られており、本研究課題を遂行する過程で得られる知見は太陽電池の分野にとどまらず、発光半導体も含めたオプトエレクトロニクス分野の発展に広く貢献することが期待される。

Outline of Final Research Achievements

In this research, the carrier transport properties of perovskite-type sulfide BaZrS3, which is a promising candidate for solar cell material, have been investigated for chemical doped samples. The La-doped sample obtained by annealing the oxide-precursor in carbon disulfide (CS2) exhibits n-type semiconducting behavior. Conversely, the P-doped sample synthesized by the solid-state reaction method using sulfide- and phosphide-precursors exhibits the p-type semiconducting behavior. These findings represent first observations of p-type and n-type conduction in chemically doped BaZrS3. Furthermore, we successfully control the carrier concentrations in BaZrS3 by tuning the dopant concentrations. The present findings pave the way for the application of BaZrS3 in solar cell devices.

Academic Significance and Societal Importance of the Research Achievements

ペロブスカイト型硫化物BaZrS3は太陽電池材料として理想的な巨大な吸収係数と、高い化学的耐久性と環境親和性を併せ持つことから注目を集めており、本研究によって化学修飾によるp型、n型半導体化が実現し、キャリア輸送特性が明らかになったことは本物質の太陽電池応用に向けて意義をもつ。本物質は熱電材料としても有望視されており、本研究をきっかけにBaZrS3が太陽電池材料としてだけでなく、熱電材料も含めた広くエネルギー変換材料として研究が進展することが期待される。

Report

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

    (9 results)

All 2023 2022

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (4 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Chemical Switching of Ferroaxial and Nonferroaxial Structures Based on Second-Order Jahn?Teller Activity in (Na,K)<sub>2</sub>Hf(BO<sub>3</sub>)<sub>2</sub>2023

    • Author(s)
      Nagai Takayuki、Kimura Tsuyoshi
    • Journal Title

      Chemistry of Materials

      Volume: 35 Issue: 10 Pages: 4109-4115

    • DOI

      10.1021/acs.chemmater.3c00624

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Detecting Magnetoelectric Effect in a Metallic Antiferromagnet via Nonreciprocal Rotation of Reflected Light2023

    • Author(s)
      Arakawa Keito、Hayashida Takeshi、Kimura Kenta、Misawa Ryusuke、Nagai Takayuki、Miyamoto Tatsuya、Okamoto Hiroshi、Iga Fumitoshi、Kimura Tsuyoshi
    • Journal Title

      Physical Review Letters

      Volume: 131 Issue: 23 Pages: 236702-236702

    • DOI

      10.1103/physrevlett.131.236702

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Enhancing analysis efficiency: Automation of spectroscopic ellipsometry for crystalline semiconductors and transparent conductive oxides2023

    • Author(s)
      Maeda Sara、Tani Yusuke、Katayama Hirotaka、Kanematsu Daiji、Oiwake Kohei、Nishigaki Yukinori、Miyadera Tetsuhiko、Chikamatsu Masayuki、Nagai Takayuki、Aizawa Takuma、Hanzawa Kota、Hiramatsu Hidenori、Terakawa Akira、Hosono Hideo、Fujiwara Hiroyuki
    • Journal Title

      Thin Solid Films

      Volume: 787 Pages: 140099-140099

    • DOI

      10.1016/j.tsf.2023.140099

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chemical Aspect of Displacive-Type Ferroaxial Phase Transition from Perspective of Second-Order Jahn-Teller Effect: NASICON Systems as an Example2023

    • Author(s)
      Takayuki Nagai, Yasuhide Mochizuki, Suguru Yoshida, and Tsuyoshi Kimura
    • Journal Title

      Journal of the American Chemical Society

      Volume: 145 Issue: 14 Pages: 8090-8098

    • DOI

      10.1021/jacs.3c00797

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Phase variation of ferroelectric Li2Sr1-xCax(Nb1-xTax)2O7 by selective reinforcement in the (Nb,Ta)-O covalent bonds2022

    • Author(s)
      Nakano Akitoshi、Shirakuni Hirokazu、Nagai Takayuki、Mochizuki Yasuhide、Oba Fumiyasu、Yokota Hiroko、Kawaguchi Shogo、Terasaki Ichiro、Taniguchi Hiroki
    • Journal Title

      Physical Review Materials

      Volume: 6 Issue: 4 Pages: 044412-044412

    • DOI

      10.1103/physrevmaterials.6.044412

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] NASICON物質群を舞台とした フェロアキシャル物質の設計指針の提案2023

    • Author(s)
      永井隆之、望月泰英、吉田傑、木村剛
    • Organizer
      日本物理学会 2023年春季大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 化学結合に着目した(Na,K)Hf2(BO3)2におけるフェロアキシャル構造の制御2023

    • Author(s)
      永井隆之、木村剛
    • Organizer
      日本物理学会 第78回年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Chemical aspect of ferroaxial order: NASICON systems as a case study2023

    • Author(s)
      Takayuki Nagai, Yasuhide Mochizuki, Suguru Yoshida, Tsuyoshi Kimura
    • Organizer
      The 21st TAIWAN-JAPAN-KOREA SYMPOSIUM ON STRONGLY CORRELATED ELECTRON SYSTEMS
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 化学結合に基づくフェロアキシャル物質の探索と構造制御2023

    • Author(s)
      永井隆之、木村剛、望月泰英、吉田傑
    • Organizer
      第6回固体化学フォーラム
    • Related Report
      2023 Annual Research Report

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Published: 2022-04-19   Modified: 2025-01-30  

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