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Detailed characterization of SAMO utilizing Li@C60 films

Research Project

Project/Area Number 20H02808
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 35030:Organic functional materials-related
Research InstitutionUniversity of Tsukuba

Principal Investigator

Yamada Yoichi  筑波大学, 数理物質系, 准教授 (20435598)

Co-Investigator(Kenkyū-buntansha) 上野 裕  東北大学, 学際科学フロンティア研究所, 助教 (00775752)
福本 恵紀  大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 特任准教授 (20443559)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000)
Fiscal Year 2022: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2020: ¥16,120,000 (Direct Cost: ¥12,400,000、Indirect Cost: ¥3,720,000)
Keywords超原子分子軌道 / 内包フラーレン / SAMO / Li@C60 / フラーレン
Outline of Research at the Start

有機分子の周囲に大きく広がった軌道である超原子分子軌道(SAMO)を有機エレクトロニクスに応用するには「有機薄膜のSAMO 」の理解が必須となる。本研究では、安定なSAMOを有するLi内包C60(Li@C60)に注目し、独自に作製したLi@C60薄膜をモデル系とすることで、薄膜のSAMOの高精度計測を実現する。STMにより、SAMOの隣接分子や基板表面の電子系との相互作用を明らかにし、SAMOが薄膜の電子輸送に与える影響を、時間分解 PEEM法により評価する。同時に、化学修飾による薄膜のSAMOの精密制御を達成する。これをもとに、「有機薄膜のSAMOの科学」を世界に先駆けて開拓する。

Outline of Final Research Achievements

In this study, we investigated the SAMO (Super-Atom Molecular Orbital) which is a spatially extended non-occupied molecular orbital, of a high-purity endohedral lithium fullerene film. This research has revealed the possibility of using SAMOs for electron transport, which has been an issue in organic electronics. Through this study, we have succeeded in preparing a delocalized state of SAMOs in high purity thin films of Li endohedral C60 and C70, and have measured the SAMOs at the molecular level. In particular, we were able to analyze the relationship between SAMO and Li atomic positions by quantum chemical calculations, and were able to propose a method for controlling "SAMO in film films," which is still unresolved.

Academic Significance and Societal Importance of the Research Achievements

現状の有機エレクトロニクスの大きな課題の一つが低い電子移動度の改善にある。空間的に大きく広がった非占有軌道である超原子分子軌道(SAMO)は高効率の電子輸送に適した軌道であるが、十分研究されていない。本研究では、よく規定され、かつ制御可能なSAMOを有する内包フラーレンの薄膜を独自に作製し、そのSAMOを詳細に研究した。この結果、薄膜中でのSAMOの分布や、そのエネルギーを明らかにすることができた。さらに、理論計算と実験結果を比較することで、内包元素によるSAMOの制御法を提案することができた。本結果は、未だ理解が不十分なSAMOの基礎研究を拓くものである。

Report

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

    (19 results)

All 2023 2022 2021 2020 Other

All Journal Article (10 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 10 results,  Open Access: 5 results) Presentation (8 results) (of which Int'l Joint Research: 2 results) Remarks (1 results)

  • [Journal Article] Field Emission Angular Distribution from Single Molecules2023

    • Author(s)
      Yamada Yoichi、Tsuruta Ryohei、Yamamoto Yuho、Ono Yutaro、Nobeyama Tomohiro、Sasaki Masahiro、Suresh Rahul、Kuklin Artem V.、?gren HAns
    • Journal Title

      SSRN

      Volume: -

    • DOI

      10.2139/ssrn.4392554

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Photoemission Tomography of a One-Dimensional Row Structure of a Flat-Lying Picene Multilayer on Ag(110)2022

    • Author(s)
      Iwasawa Masato、Kobayashi Shinnosuke、Sasaki Masahiro、Hasegawa Yuri、Ishii Hiroyuki、Matsui Fumihiko、Kera Satoshi、Yamada Yoichi
    • Journal Title

      The Journal of Physical Chemistry Letters

      Volume: 13 Issue: 6 Pages: 1512-1518

    • DOI

      10.1021/acs.jpclett.1c03821

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Carrier‐Transport Mechanism in Organic Antiambipolar Transistors Unveiled by Operando Photoemission Electron Microscopy2022

    • Author(s)
      Hayakawa Ryoma、Takeiri Soichiro、Yamada Yoichi、Wakayama Yutaka、Fukumoto Keiki
    • Journal Title

      Advanced Materials

      Volume: 34 Issue: 30 Pages: 2201277-2201277

    • DOI

      10.1002/adma.202201277

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Superatom Molecular Orbitals of Li@C<sub>60</sub>: Effects of the Li Position and the Substrate2022

    • Author(s)
      Kuklin Artem V.、Suresh Rahul、Shimizu Konoha、Yamada Yoichi、?gren Hans
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 126 Issue: 37 Pages: 15891-15898

    • DOI

      10.1021/acs.jpcc.2c02098

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Surface Potential Visualization in Organic Antiambipolar Transistors Using Operando Kelvin Probe Force Microscopy for Understanding the Comprehensive Carrier Transport Mechanism2022

    • Author(s)
      Hayakawa Ryoma、Takeiri Soichiro、Yamada Yoichi、Wakayama Yutaka
    • Journal Title

      Advanced Materials Interfaces

      Volume: - Issue: 19 Pages: 2201857-2201857

    • DOI

      10.1002/admi.202201857

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Increasing Electrode Work Function Using a Natural Molecule2022

    • Author(s)
      Akaike Kouki、Hosokai Takuya、Ono Yutaro、Tsuruta Ryohei、Yamada Yoichi
    • Journal Title

      Advanced Materials Interfaces

      Volume: - Issue: 19 Pages: 2201800-2201800

    • DOI

      10.1002/admi.202201800

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Direct Visualization of Nearly Free Electron States Formed by Superatom Molecular Orbitals in a Li@C<sub>60</sub> Monolayer2021

    • Author(s)
      Sumi Naoya、Kuklin Artem V.、Ueno Hiroshi、Okada Hiroshi、Ogawa Tomoyuki、Kawachi Kazuhiko、Kasama Yasuhiko、Sasaki Masahiro、Avramov Pavel V.、?gren Hans、Yamada Yoichi
    • Journal Title

      The Journal of Physical Chemistry Letters

      Volume: 12 Issue: 32 Pages: 7812-7817

    • DOI

      10.1021/acs.jpclett.1c02246

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Origin of monochromatic electron emission from planar-type graphene/hexagonal boron nitride/n-type silicon electron emission devices2021

    • Author(s)
      Tomoya Igari, Masayoshi Nagao, Kazutaka Mitsuishi, Masahiro Sasaki, Yoichi Yamada and Katsuhisa Murakami
    • Journal Title

      Physical Review Applied

      Volume: 15 Issue: 1 Pages: 014044-014044

    • DOI

      10.1103/physrevapplied.15.014044

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Exciton Dissociation and Electron Transfer at a Well-defined Organic Interface of an Epitaxial C60 layer on a Pentacene Single Crystal2020

    • Author(s)
      Iwasawa, Masato; Tsuruta, Ryohei; Nakayama, Yasuo; Sasaki, Masahiro; Hosokai, Takuya; Lee, Sunghee; Fukumoto, Keiki; *Yamada, Yoichi
    • Journal Title

      J. Phys. Chem. C

      Volume: 124 Issue: 25 Pages: 13572-13579

    • DOI

      10.1021/acs.jpcc.0c02796

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Optically controlled ternary logic circuits based on organic antiambipolar transistors2020

    • Author(s)
      Debdatta Panigrahi, Ryoma Hayakawa, Kota Fuchii, Yoichi Yamada, Yutaka Wakayama
    • Journal Title

      Advanced Electronic Materials

      Volume: 6 Issue: 1 Pages: 2000940-2000940

    • DOI

      10.1002/aelm.202000940

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 窒素含有ペンタセン単分子膜における分子間水素結合の影響2023

    • Author(s)
      小野裕太郎、鶴田諒平、延山知弘、佐々木正洋、田所誠、中山泰生、山田洋一
    • Organizer
      NanospecFY2022mini
    • Related Report
      2022 Annual Research Report
  • [Presentation] 電界放射顕微鏡(FEM)における分子パターンの起源に関する研究2022

    • Author(s)
      山本 勇帆、鶴田 諒平、佐々木 正洋、山田 洋一
    • 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] 純粋なBTANC薄膜の作製2022

    • Author(s)
      小野 裕太郎、鶴田 諒平、佐々木 正洋、田所 誠、中山 泰生、山田 洋一
    • 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] CeB6単結晶表面の電子状態評価2022

    • Author(s)
      鶴田 諒平、佐々木 正洋、山田 洋一
    • 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] Li@C70の超原子分子軌道(SAMO)計測 ー 基板依存性2022

    • Author(s)
      山田 洋一1、北畠 大樹2、延山 知弘1、大橋 左和1、清水 好葉、佐々木 正洋、河地 和彦、笠間 泰彦、美齊津 文典、上野 裕
    • 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] Real-time and real-space visualization of molecular orbitals by means of field emission microscopy (FEM)2022

    • Author(s)
      Yuho Yamamoto, Ryohei Tsuruta, Yoichi Yamada and Masahiro Sasaki
    • Organizer
      IVC-22
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Deposition of pure BTANC thin-film2022

    • Author(s)
      Yutaro Ono, Kazuki Matsui, Ryohei Tsuruta, Masahiro Sasaki, Makoto Tadokoro, Yasuo Nakayama, Yoichi Yamada
    • Organizer
      IVC-22
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Li@C70の超原子分子軌道(SAMO)の直接計測(2)2022

    • Author(s)
      清水好葉
    • Organizer
      応用物理学会
    • Related Report
      2021 Annual Research Report
  • [Remarks] 山田研究室

    • URL

      http://www.bk.tsukuba.ac.jp/~surflab/y_top.html

    • Related Report
      2022 Annual Research Report

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

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