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Demonstration of shift current photovoltaic response in high-quality thin films of halide ferroelectrics

Research Project

Project/Area Number 20H02626
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 29020:Thin film/surface and interfacial physical properties-related
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Nakamura Masao  国立研究開発法人理化学研究所, 創発物性科学研究センター, 上級研究員 (50525780)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000)
Fiscal Year 2022: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2021: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2020: ¥16,380,000 (Direct Cost: ¥12,600,000、Indirect Cost: ¥3,780,000)
Keywordsシフト電流 / 光電変換 / ハライド / 強誘電体 / 分子線エピタキシー / 薄膜 / ハライド強誘電体 / シフト電流光電変換
Outline of Research at the Start

強誘電体を含む空間反転対称性の破れた構造を持つ物質は、外部バイアス無しにシフト電流と呼ばれる光電流を発生する。シフト電流は格子欠陥の影響を受けにくい低エネルギー散逸電流であり、高速の応答性やバンドギャップを超える電圧出力など従来型の光電変換素子にはない優れた特性を持つことが知られている。本研究では、可視光に強い応答性を持つハライドの強誘電体の高品質薄膜の成膜技術を確立し、その薄膜を用いた光電変換デバイスを作製してシフト電流応答の持つ優れた特性を実証する。

Outline of Final Research Achievements

Materials with broken inversion symmetry exhibit photocurrent driven by quantum-mechanical phase, called shift current. However, experimental demonstration of shift current in thin-film device structures has been lacking. In this study, we target halide ferroelectric semiconductors, which have large spontaneous polarization and strong optical absorption in the visible light range, and demonstrate photovoltaic conversion by shift current mechanism in thin film samples. We first prepared high-quality thin films of ferroelectric halide semiconductors with well-defined polarization axes by molecular beam epitaxy. Then, we successfully observed shift current response in the thin-film device structure. The observed current was found to be enhanced by several orders of magnitude compared to that in bulk samples.

Academic Significance and Societal Importance of the Research Achievements

本研究では、エピタキシャル薄膜におけるシフト電流応答の実証を行った。トポロジカルな起源を持つシフト電流は、格子欠陥によるキャリアの散乱の影響を受けにくく、パルス光に対して非常に高速の応答性を示すことに加えて、バンドギャップを超える高い電圧出力が可能という特性を持つことから、革新的な光電変換素子の動作原理として期待されている。本研究の成果によって、シフト電流による光電変換の薄膜デバイス動作の研究が今後発展していくことが期待される。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (30 results)

All 2023 2022 2021 2020

All Journal Article (16 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 16 results,  Open Access: 5 results) Presentation (14 results) (of which Int'l Joint Research: 4 results,  Invited: 6 results)

  • [Journal Article] Crossover from strong to weak exciton confinement in thickness-controlled epitaxial PbI<sub>2</sub> thin films2023

    • Author(s)
      Nakamura Masao、Namba Ryuichi、Yasunami Takahiro、Ogawa Naoki、Tokura Yoshinori、Kawasaki Masashi
    • Journal Title

      Applied Physics Letters

      Volume: 122 Issue: 7 Pages: 073101-073108

    • DOI

      10.1063/5.0138536

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Magnetic field control of insulator-metal crossover in cobaltite films via thermally activated percolation2022

    • Author(s)
      Wang Meng、Matsuura Keisuke、Nakamura Masao、Sawada Masahiro、Kawasaki Masashi、Kagawa Fumitaka
    • Journal Title

      Physical Review B

      Volume: 106 Issue: 15 Pages: 155135-155142

    • DOI

      10.1103/physrevb.106.155135

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Band structures in orientation-controlled CuI thin films under epitaxial strain2022

    • Author(s)
      Nakamura Masao、Inagaki Sotaro、Okamura Yoshihiro、Ogino Makiko、Takahashi Youtarou、Adachi Kiyohiro、Hashizume Daisuke、Tokura Yoshinori、Kawasaki Masashi
    • Journal Title

      Physical Review B

      Volume: 106 Issue: 12 Pages: 125307-125317

    • DOI

      10.1103/physrevb.106.125307

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Shift current: A quantum-mechanical photovoltaic effect in noncentrosymmetric crystals2021

    • Author(s)
      中村 優男、五月女 真人、小川 直毅、川﨑 雅司
    • Journal Title

      Oyo Buturi

      Volume: 90 Issue: 2 Pages: 98-102

    • DOI

      10.11470/oubutsu.90.2_98

    • NAID

      130007981087

    • ISSN
      0369-8009, 2188-2290
    • Year and Date
      2021-02-05
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Heteroepitaxial growth of wide bandgap cuprous iodide films exhibiting clear free-exciton emission2021

    • Author(s)
      Inagaki S.、Nakamura M.、Okamura Y.、Ogino M.、Takahashi Y.、Peng L. C.、Yu X. Z.、Tokura Y.、Kawasaki M.
    • Journal Title

      Applied Physics Letters

      Volume: 118 Issue: 1 Pages: 012103-012103

    • DOI

      10.1063/5.0036862

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Terahertz emission spectroscopy of ultrafast exciton shift current in the noncentrosymmetric semiconductor CdS2021

    • Author(s)
      Sotome M.、Nakamura M.、Morimoto T.、Zhang Y.、Guo G.-Y.、Kawasaki M.、Nagaosa N.、Tokura Y.、Ogawa N.
    • Journal Title

      Physical Review B

      Volume: 103 Issue: 24

    • DOI

      10.1103/physrevb.103.l241111

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Molecular beam epitaxy of two-dimensional semiconductor BiI<sub>3</sub> films exhibiting sharp exciton absorption2021

    • Author(s)
      Yasunami T.、Nakamura M.、Inagaki S.、Toyoda S.、Ogawa N.、Tokura Y.、Kawasaki M.
    • Journal Title

      Applied Physics Letters

      Volume: 119 Issue: 24 Pages: 243101-243101

    • DOI

      10.1063/5.0070762

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Imaging the formation and surface phase separation of the CE phase2021

    • Author(s)
      Zhou Haibiao、Feng Qiyuan、Hou Yubin、Nakamura Masao、Tokura Yoshinori、Kawasaki Masashi、Sheng Zhigao、Lu Qingyou
    • Journal Title

      npj Quantum Materials

      Volume: 6 Issue: 1 Pages: 5079-5079

    • DOI

      10.1038/s41535-021-00353-2

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Real-space observations of 60-nm skyrmion dynamics in an insulating magnet under low heat flow2021

    • Author(s)
      Yu Xiuzhen、Kagawa Fumitaka、Seki Shinichiro、Kubota Masashi、Masell Jan、Yasin Fehmi 、Nakajima Kiyomi、Nakamura Masao、Kawasaki Masashi、Nagaosa Naoto、Tokura Yoshinori
    • Journal Title

      Nature Communications

      Volume: 12 Issue: 1 Pages: 5079-5079

    • DOI

      10.1038/s41467-021-25291-2

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Denoising Electron Holograms using the Wavelet Hidden Markov Model for Phase Retrieval-Applications to the Phase-shifting Method2021

    • Author(s)
      Takehiro Tamaoka, Yoshihiro. Midoh, Kazuo Yamamoto, Shodai Aritomi, Toshiaki Tanigaki, Masao Nakamura, Koji Nakamae, Masashi Kawasaki, Yasukazu Murakami
    • Journal Title

      AIP Advances

      Volume: 11 Issue: 2 Pages: 025135-025135

    • DOI

      10.1063/5.0027599

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Kinetic pathway facilitated by a phase competition to achieve a metastable electronic phase2021

    • Author(s)
      Matsuura Keisuke、Oike Hiroshi、Kocsis Vilmos、Sato Takuro、Tomioka Yasuhide、Kaneko Yoshio、Nakamura Masao、Taguchi Yasujiro、Kawasaki Masashi、Tokura Yoshinori、Kagawa Fumitaka
    • Journal Title

      Physical Review B

      Volume: 103 Issue: 4

    • DOI

      10.1103/physrevb.103.l041106

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Shift Current: Quantum Mechanical Picture of the Bulk Photovoltaic Effect2020

    • Author(s)
      小川 直毅、五月女 真人、中村 優男、森本 高裕
    • Journal Title

      Butsuri

      Volume: 75 Issue: 3 Pages: 154-159

    • DOI

      10.11316/butsuri.75.3_154

    • NAID

      130007904122

    • ISSN
      0029-0181, 2423-8872
    • Year and Date
      2020-03-05
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Non-local photocurrent in a ferroelectric semiconductor SbSI under local photoexcitation2020

    • Author(s)
      Nakamura M.、Hatada H.、Kaneko Y.、Ogawa N.、Sotome M.、Tokura Y.、Kawasaki M.
    • Journal Title

      Applied Physics Letters

      Volume: 116 Issue: 12 Pages: 122902-122902

    • DOI

      10.1063/5.0001524

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Molecular beam epitaxy of high-quality CuI thin films on a low temperature grown buffer layer2020

    • Author(s)
      Inagaki S.、Nakamura M.、Aizawa N.、Peng L. C.、Yu X. Z.、Tokura Y.、Kawasaki M.
    • Journal Title

      Applied Physics Letters

      Volume: 116 Issue: 19 Pages: 192105-192105

    • DOI

      10.1063/5.0007389

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Defect tolerant zero-bias topological photocurrent in a ferroelectric semiconductor2020

    • Author(s)
      Hatada Hiroki、Nakamura Masao、Sotome Masato、Kaneko Yoshio、Ogawa Naoki、Morimoto Takahiro、Tokura Yoshinori、Kawasaki Masashi
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 117 Issue: 34 Pages: 20411-20415

    • DOI

      10.1073/pnas.2007002117

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Bulk Photovoltaic Effect: A Modern view and Possible Applications2020

    • Author(s)
      Nakamura Masao、Kawasaki Masashi
    • Journal Title

      AAPPS Bulletin

      Volume: 30 Pages: 22-28

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] 膜厚制御されたPbI2薄膜における二次元励起子閉じ込め効果2023

    • Author(s)
      中村 優男、難波 隆一、安波 貴広、小川 直毅、十倉 好紀、川﨑 雅司
    • Organizer
      2023年 第70回応用物理学会 春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] MBE成長したCuI薄膜における金属的な低温伝導特性の観測2023

    • Author(s)
      安波 貴広、中村 優男、小川 直毅、十倉 好紀、川﨑 雅司
    • Organizer
      2023年 第70回応用物理学会 春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 配向制御したCuI薄膜における 歪み誘起バンド構造変化2022

    • Author(s)
      中村 優男、稲垣 宗太朗、岡村 嘉大、荻野 槙子、高橋 陽太郎、足立 精宏、橋爪 大輔、十倉 好紀、川﨑 雅司
    • Organizer
      2022年 第83回応用物理学会 秋季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Molecular beam epitaxy of single-crystalline iodide films toward the development of halide electronics2021

    • Author(s)
      Masao Nakamura
    • Organizer
      Annual Meeting and Status Seminar FOR2857 Fall School “Halogen Semiconductors”
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Shift current of topological origin in polar semiconductors2021

    • Author(s)
      Masao Nakamura
    • Organizer
      MRM2021 Materials Research Meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 量子力学的位相に駆動されるシフト電流の実験検証2021

    • Author(s)
      中村優男
    • Organizer
      東京工業大学 量子物理学・ナノサイエンス第329回セミナー
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 量子位相に駆動される低散逸で高速応答の シフト電流光電変換2021

    • Author(s)
      中村優男
    • Organizer
      分子研研究会 「エネルギー科学の最前線:階層横断的な理解に向けて」
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 分子性結晶における非線形光電流応答2021

    • Author(s)
      中村優男
    • Organizer
      日本物理学会 第77回年次大会 「分子性結晶におけるトポロジカル物性の展開」
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Extremely sharp free exciton emission in heteroepitaxial cuprous iodide thin films grown by MBE2021

    • Author(s)
      M. Nakamura, S. Inagaki, Y. Okamura, M. Ogino, Y. Takahashi, L. C. Peng, X. Z. Yu, Y. Tokura, and M. Kawasaki
    • Organizer
      2021 Virtual MRS Spring Meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ヘテロエピタキシャル成長したCuI 単結晶薄膜における自由励起子発光2021

    • Author(s)
      稲垣宗太朗, 中村優男, 岡村嘉大, 荻野槙子, 高橋陽太郎, Licong Peng, Xiuzhen Yu, 十倉好紀, 川﨑雅司
    • Organizer
      第68回応用物理学会春季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 層状化合物BiI3薄膜のエピタキシャル成長と光学特性評価2021

    • Author(s)
      安波貴広, 中村優男, 稲垣宗太朗, 豊田新悟, 小川直毅, 十倉好紀, 川﨑雅司
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Nonlinear photocurrent generation in halide and organic polar semiconductors2021

    • Author(s)
      Masao Nakamura
    • Organizer
      CEMS Topical Online Meeting “Nonlinear electric and optical responses in quantum materials”
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 大きな電子分極を持つ有機・ハライド強誘電体における低散逸で高速応答のシフト電流発生2021

    • Author(s)
      中村優男
    • Organizer
      第5回分子性固体オンラインセミナー
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 分子線エピタキシー法による高品質ヨウ化銅薄膜の作製2020

    • Author(s)
      1.稲垣宗太朗, 中村優男, 相澤直矢, Licong Peng, Xiuzhen Yu, 十倉好紀, 川﨑雅司
    • Organizer
      2020年応用物理学会秋季学術講演会
    • Related Report
      2020 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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