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Direct observation of gap states in organic semiconductors and elucidation of device properties

Research Project

Project/Area Number 16H04222
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Device related chemistry
Research InstitutionChiba University

Principal Investigator

ishii hisao  千葉大学, 先進科学センター, 教授 (60232237)

Co-Investigator(Kenkyū-buntansha) KRUEGER PETER  千葉大学, 大学院工学研究院, 教授 (30706362)
田中 有弥  千葉大学, 先進科学センター, 助教 (90780065)
Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥14,820,000 (Direct Cost: ¥11,400,000、Indirect Cost: ¥3,420,000)
Fiscal Year 2019: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2018: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2017: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2016: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Keywords高感度光電子分光 / ギャップ準位 / 状態密度 / オペランド測定 / 有機エレクトロニクス / 有機半導体 / アーバックテール / テール準位 / IGZO / ギャップ内準位 / 空準位 / オペランド光電子収量分光 / 半導体 / 高感度紫外高電子分光 / 電子注入 / 半導体物理 / 高感度紫外光電子分光 / 有機EL素子 / 光電子分光
Outline of Final Research Achievements

The level existing in the HOMO-LUMO gap of organic semiconductors is an important factor that holds the key to the performance of various organic electronic devices, but it cannot be observed directly, and has been indirectly evaluated from electric properties on the basis of models.
In this study, we improved the high-sensitivity photoelectron spectroscopy; we have succeeded in observing weak gap levels at the detection level of 1/100 million. We also succeeded in roughly evaluating the unoccupied gap level in combination with the results of high-sensitivity absorption spectroscopy. In addition, the electronic structures of thin films and interfaces related to solar cells, triboelectrification, organic EL, proteins, etc. were measured with high sensitivity, and the relationship between device characteristics and electronic structure was clarified.

Academic Significance and Societal Importance of the Research Achievements

半導体を用いた様々なエレクトロニクスでは,トラップと呼ばれる電気の流れを止めてしまう準位が実際の素子特性を左右しています。有機ELなどに使われている有機半導体については,トラップの研究が限られていて,理解が進んでいませんでした。本研究では,そのようなトラップ準位を光電子分光で高感度に測定できるようにしました。1000分子に1個の感度を有する従来法に比べ,遥かに高い感度を実現することで,1億分子に1個程度の少ない密度のトラップも計測できるようになりました。このような手法を使うと有機半導体の特性の理解がすすみ,有機EL,有機太陽電池などの有機半導体を用いた素子研究を後押しすることができます。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (95 results)

All 2020 2019 2018 2017 2016 Other

All Int'l Joint Research (6 results) Journal Article (15 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 15 results,  Acknowledgement Compliant: 5 results,  Open Access: 1 results) Presentation (71 results) (of which Int'l Joint Research: 33 results,  Invited: 17 results) Book (1 results) Remarks (1 results) Patent(Industrial Property Rights) (1 results)

  • [Int'l Joint Research] ワイツマン研究所(イスラエル)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] アウグスブルグ大学(ドイツ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] ケンブリッジ大学(英国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] University of Augusburg(ドイツ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] University of Cambridge(英国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] アウグスブルグ大学(ドイツ)

    • Related Report
      2017 Annual Research Report
  • [Journal Article] Crystalline versus Amorphous Donor-Acceptor Blends: Influence of Layer Morphology on the Charge-Transfer Density of States2020

    • Author(s)
      Theresa Linderl, Thomas Zechel, Alexander Hofmann, Tomoya Sato, Kohei Shimizu, Hisao Ishii, and Wolfgang Bruetting
    • Journal Title

      Physical Review Applied

      Volume: 13 Issue: 2

    • DOI

      10.1103/physrevapplied.13.024061

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Gap States of a Polyethylene Model Oligomer Observed by Using High-Sensitivity Ultraviolet Photoelectron Spectroscopy2019

    • Author(s)
      YAMAGUCHI Yuki、SHIMIZU Kohei、MATSUZAKI Atsushi、SANO Daisuke、SATO Tomoya、TANAKA Yuya、ISHII Hisao
    • Journal Title

      IEICE Transactions on Electronics

      Volume: E102.C Issue: 2 Pages: 168-171

    • DOI

      10.1587/transele.2018OMS0008

    • NAID

      130007586586

    • ISSN
      0916-8524, 1745-1353
    • Year and Date
      2019-02-01
    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Influence of Polarity of Polarization Charge Induced by Spontaneous Orientation of Polar Molecules on Electron Injection in Organic Semiconductor Devices2019

    • Author(s)
      TANAKA Yuya、MAKINO Takahiro、ISHII Hisao
    • Journal Title

      IEICE Transactions on Electronics

      Volume: E102.C Issue: 2 Pages: 172-175

    • DOI

      10.1587/transele.2018OMS0014

    • NAID

      130007586753

    • ISSN
      0916-8524, 1745-1353
    • Year and Date
      2019-02-01
    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dipolar Doping of Organic Semiconductors to Enhance Carrier Injection2019

    • Author(s)
      Hofmann, AJL ; Zufle, S ; Shimizu, K ; Schmid, M ; Wessels, V ; Jager, L ; Altazin, S ; Ikegami, K ; Khan, MR ; Neher, D ; Ishii, H ; Ruhstaller, B; Bruetting, W
    • Journal Title

      PHYSICAL REVIEW APPLIED

      Volume: 12 Issue: 6

    • DOI

      10.1103/physrevapplied.12.064052

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Application of High-Sensitivity UV photoemission Spectroscopy to Examine the Electronic Structure of Thermophilic Rhodopsin2019

    • Author(s)
      Sano Daisuke、Ide Ichiro、Akiyama Tomoki、Tanaka Yuya、Sudo Yuki、Murata Takeshi、Ishii Hisao
    • Journal Title

      Molecular Crystals and Liquid Crystals

      Volume: 687 Issue: 1 Pages: 34-39

    • DOI

      10.1080/15421406.2019.1648052

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spontaneous orientation polarization in organic light-emitting diodes2019

    • Author(s)
      Yutaka Noguchi, Wolfgang Bruetting, and Hisao Ishii
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 58 Issue: SF Pages: SF0801-SF0801

    • DOI

      10.7567/1347-4065/ab0de8

    • NAID

      210000156224

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Obtaining the highest molecular orbital peak of organic matter from photoelectron yield spectra2019

    • Author(s)
      Shohei Tadano, Yasuo Nakayama, Hiroumi Kinjo, Hisao Ishii and Peter Krueger
    • Journal Title

      Phys. Rev. Applied

      Volume: 11 Issue: 5 Pages: 054081-054081

    • DOI

      10.1103/physrevapplied.11.054081

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Direct observation of charged state in C60-based field-effect transistor using operando photoelectron yield spectroscopy2018

    • Author(s)
      Tanaka Yuya、Ikegami Keitaro、Maruyama Taichi、Kinjo Hiroumi、Ishii Hisao
    • Journal Title

      Applied Physics Express

      Volume: 11 Issue: 8 Pages: 081601-081601

    • DOI

      10.7567/apex.11.081601

    • NAID

      210000136300

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Observation of spontaneous orientation polarization in evaporated films of organic light-emitting diode materials2018

    • Author(s)
      K. Osada, K. Goushi, H. Kaji, C. Adachi, H. Ishii, Y. Noguchi
    • Journal Title

      ORGANIC ELECTRONICS,

      Volume: 58 Pages: 313-317

    • DOI

      10.1016/j.orgel.2018.04.026

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Single crystal pentacene valence band dispersion and its temperature dependence2017

    • Author(s)
      Yasuo Nakayama, Yuta Mizuno, Masataka Hikasa, Masayuki Yamamoto, Masaharu Matsunami, Shinichiro Ideta, Kiyohisa Tanaka, Hisao Ishii, Nobuo Ueno
    • Journal Title

      The Journal of Physical Chemistry Letters

      Volume: 8 Issue: 6 Pages: 1259-1264

    • DOI

      10.1021/acs.jpclett.7b00082

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Effects of the Ambient Exposure on the Electronic States of the Clean Surface of the Pentacene Single Crystal2017

    • Author(s)
      Yuta Mizuno, Masayuki Yamamoto, Hiroumi Kinjo, Kazuhiko Mase, Hisao Ishii, Koji K. Okudaira, Hiroyuki Yoshida, Yasuo Nakayama
    • Journal Title

      Molecular Crystals and Liquid Crystals

      Volume: - Issue: 1 Pages: 216-222

    • DOI

      10.1080/15421406.2017.1302001

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Negative capacitance in an organic solar cell observed by displacement current measurement2017

    • Author(s)
      Shimizu Koji、Tanaka Yuya、Noguchi Yutaka、Ishii Hisao
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 924 Pages: 012012-012012

    • DOI

      10.1088/1742-6596/924/1/012012

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Density of States Evaluation of an Insulating Polymer by High-Sensitivity Ultraviolet Photoemission Spectroscopy2017

    • Author(s)
      Tomoya Sato , Kaveenga Rasika Koswattage , Yasuo Nakayama , Hisao Ishii
    • Journal Title

      Appl. Phys. Lett. 11102 (2017)

      Volume: 110 Issue: 11

    • DOI

      10.1063/1.4978529

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] 1015 cm-3 eV-1 level detection of density of states of a p-type polymer by hν-dependent high-sensitivity ultraviolet photoemission spectroscopy2017

    • Author(s)
      Tomoya Sato, Hiroumi Kinjo, Junki Yamazaki and Hisao Ishii
    • Journal Title

      Applied Physics Express

      Volume: 10 Issue: 1 Pages: 011602-011602

    • DOI

      10.7567/apex.10.011602

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Energy Level Alignment at Bebq2/PEI/ITO Interfaces Studied by UV Photoemission Spectroscopy2017

    • Author(s)
      Kohei Shimizu, Hirohiko Fukagawa, Katsuyuki Morii, Hiroumi Kinjo, Tomoya Sato and Hisao Ishii
    • Journal Title

      MRS Advances Published Online

      Volume: N/A Issue: 42 Pages: 1-6

    • DOI

      10.1557/adv.2017.134

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] 高感度紫外光電子分光と光熱偏向分光によるa-IGZO薄膜のギャップ内準位の評価2020

    • Author(s)
      中澤 遼太郎, 松崎 厚志, 清水 康平, 但野 将平, 東海林 弘, 川嶋 絵美, Mojtaba Abdi Jalebi, Sam Stranks, Peter Krueger, 田中 有弥, 石井 久夫
    • Organizer
      第67回応用物理学会春季学術講演会, 上智大学 四谷キャンパス, 2020/3/12-15
    • Related Report
      2019 Annual Research Report
  • [Presentation] 波長掃引型低エネルギー高感度光電子スペクトルの解釈(3): 金属と有機試料のちがい2020

    • Author(s)
      石井久夫,木全俊輔,井手一郎,丸山泰一, 山口雄生,松崎厚志,清水康平,田中有弥
    • Organizer
      第67回応用物理学会春季学術講演会, 上智大学 四谷キャンパス, 2020/3/12-15
    • Related Report
      2019 Annual Research Report
  • [Presentation] Operando- Photoelectron Yield Spectroscopy of Organic Field Effect Transistors to Investigate Negative Carrier States2019

    • Author(s)
      Taichi Maruyama, Keitaro Ikegami, Hiroumi Kinjo, Yuya Tanaka and Hisao Ishii
    • Organizer
      The 7th International Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologies (EM-NANO 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Negative Carrier State of Organic Semiconductors Investigated by Operando- Photoelectron Yield Spectroscopy2019

    • Author(s)
      T. Maruyama, K. Ikegami, H. Kinjo, Y. Tanaka and H. Ishii
    • Organizer
      The 5th Korea-Japan joint symposium on organic electronics, 2019 KPS Spring Meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] High-Sensitivity UV Photoemission Spectroscopy of Organic Films, Interfaces, and Devices: As a Tool to Probe Traps, Carriers, and Excited States2019

    • Author(s)
      Hisao Ishii, K. Shimizu, A. Matsuzaki, D. Sano, I. Ide, T. Maruyama, Y. Yamaguchi, T. Kikuchi, S. Kimata, Y. Tanaka
    • Organizer
      2019 Collaborative Conference on Materials Research (CCMR) Gyeonggi Goyang/Seoul, South Korea
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] High-Sensitivity Photoemission Spectroscopy of Organic and Inorganic Materials2019

    • Author(s)
      Hisao Ishii
    • Organizer
      Symposium on Organic and Inorganic Hybrid Perovskites: Beyond Solar-Cell Application, June 5th 2019, Kyung Hee University
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 有機トランジスタのOperando 光電子収量分光法によるキャリアの直接観測2019

    • Author(s)
      丸山 泰一,池上 慶太郎, 田中 有弥,石井 久夫
    • Organizer
      2019年日本表面真空学会学術講演会, つくば国際会議場, 2019/10/28-30
    • Related Report
      2019 Annual Research Report
  • [Presentation] 高感度紫外光電子分光法を用いた金属タンパク質薄膜の電子構造観測2019

    • Author(s)
      井手一郎, Jerry Fereiro, Mordechai Sheves, Israel Pecht, David Cahen, 石井久夫
    • Organizer
      2019年日本表面真空学会学術講演会, つくば国際会議場, 2019/10/28-30
    • Related Report
      2019 Annual Research Report
  • [Presentation] Electronic structure of Metalloprotein Films Observed by High-Sensitivity Ultraviolet Photoelectron Spectroscopy2019

    • Author(s)
      Ichiro Ide, Jerry Fereiro, Mordechai Sheves, Israel Pecht, David Cahen, Hisao Ishii
    • Organizer
      13rd Japan-China Joint Symposium on Conduction and Photoconduction in Organic Solids and Related Phenomena, Shanghai, China 2019/10/20-23
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 高感度光電子分光による長鎖アルカン薄膜の分 子間空隙にトラップされた電子の直接観測2019

    • Author(s)
      山口 雄生,清水康平, 佐野 大輔, 松崎 厚志, 田中 有弥, 上野 那美, 森澤 勇介,石井 久夫
    • Organizer
      第9回CSJ化学フェスタ, タワーホール船堀, 2019/10/15-17
    • Related Report
      2019 Annual Research Report
  • [Presentation] 有機トランジスタのOperando 光電子収量分光法による電荷注入状態の直接観測2019

    • Author(s)
      丸山 泰一,池上 慶太郎, 田中 有弥,石井 久夫
    • Organizer
      第9回CSJ化学フェスタ, タワーホール船堀, 2019/10/15-17
    • Related Report
      2019 Annual Research Report
  • [Presentation] 高感度紫外光電子分光法を用いた金属タンパク質薄膜の電子構造観測2019

    • Author(s)
      井手一郎, Jerry Fereiro, Mordechai Sheves, Israel Pecht, David Cahen, 石井久夫
    • Organizer
      第9回CSJ化学フェスタ, タワーホール船堀, 2019/10/15-17
    • Related Report
      2019 Annual Research Report
  • [Presentation] 波長掃引型高感度光電子分光によるペロブスカイト単結晶の電子構造観察2019

    • Author(s)
      清水 康平,Igal Levine,Arava Zohar,Michael Kulbak,Antoine Kahn,Gary Hodes,David Cahen,石井 久夫
    • Organizer
      第80回応用物理学会秋季学術講演会, 北海道大学 札幌キャンパス, 2019/9/18-21
    • Related Report
      2019 Annual Research Report
  • [Presentation] 高感度紫外光電子分光による酸素暴露したC60薄膜のギャップ内準位の観測2019

    • Author(s)
      木全 俊輔,清水 康平, 松崎 厚志, 丸山 泰一, 西 寿朗, 冨谷 茂隆, 石井 久夫,田中 有弥
    • Organizer
      第80回応用物理学会秋季学術講演会, 北海道大学 札幌キャンパス, 2019/9/18-21
    • Related Report
      2019 Annual Research Report
  • [Presentation] 波長掃引型低エネルギー高感度光電子分光と深紫外吸収分光による ポリエチレンモデル化合物薄膜のギャップ内準位の観測2019

    • Author(s)
      山口 雄生,清水康平, 佐野 大輔, 松崎 厚志, 田中 有弥, 上野 那美, 森澤 勇介,石井 久夫
    • Organizer
      第80回応用物理学会秋季学術講演会, 北海道大学 札幌キャンパス, 2019/9/18-21
    • Related Report
      2019 Annual Research Report
  • [Presentation] フッ素系樹脂を有する超低屈折率正孔輸送層における導電機構の解明2019

    • Author(s)
      佐々木 樹,鈴木 泰隆, 阿部 岳文, 鶴岡 薫, 桑名 保宏, 大内 靖弘, 出村 誠也, 山口雄生, 石井 久夫, 野口 裕, 横山 大輔
    • Organizer
      第80回応用物理学会秋季学術講演会, 北海道大学 札幌キャンパス, 2019/9/18-21
    • Related Report
      2019 Annual Research Report
  • [Presentation] Direct Evidence for In-Gap States in Bromide Perovskites and Their Effects on Devices2019

    • Author(s)
      Arava Zohar, Igal Levine, Kohei Shimizu, Michael Kulbak, Hisao Ishii, Gary Hodes, David Cahen
    • Organizer
      2019 MRS Spring Meeting, Phoenix, AZ, USA, 2019/4/22-26
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dipolar doping of organic semiconductors to enhance carrier injection"2019

    • Author(s)
      Alexander Hofmann, Vivien Wessels, Simon Zueffle, Stephane Altazin, Kohei Shimizu, Beat Ruhstaller, Hisao Ishii, and Wolfgang Bruetting
    • Organizer
      DPG Spring Meeting, Regensburg, Germany, 2019/3/31-4/5
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 波長掃引型低エネルギー高感度光電子スペクトルの解釈(1)2018

    • Author(s)
      石井 久夫、木全 俊輔、濱田 北斗、菊池 武文、井手 一郎、佐野 大輔、丸山 泰一、山口 雄生、松﨑 厚志、清水 康平、田中 有弥
    • Organizer
      第66回応用物理学会春季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 有機共蒸着膜における巨大表面電位2018

    • Author(s)
      長田 航平、石井 久夫、野口 裕
    • Organizer
      第66回応用物理学会春季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Electronic Structures of Occupied LUMO states in Organic Films and Devices Studied by Photoemission-Related Techniques: Direct Observation of Negative Carrier States2018

    • Author(s)
      T. Maruyama, K. Ikegami, H. Kinjo, Y. Tanaka and H. Ishii
    • Organizer
      The 10th Asian Conference on Organic Electronics (A-COE2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Photoelectron Spectroscopic Studies of Organic Semiconductor Films and Interfaces: Progress for 30 Years with the Growth of Organic Devices2018

    • Author(s)
      H. Ishii
    • Organizer
      The 8th TOYOTA RIKEN International Workshop
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 電子構造と電気特性からみた有機EL素子における分極電荷の役割2018

    • Author(s)
      石井 久夫
    • Organizer
      第4回材料相模セミナー
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Electronic structures of organic transistors and their model interfaces studied by high-sensitivity photoemission techniques2018

    • Author(s)
      T. Maruyama , K. Ikegami , Y. Yamaguchi , K. Shimizu , A. Matsuzaki , D. Sano , Y. Tanaka , Hisao Ishii
    • Organizer
      The 9th International Conference On Technological Advances Of Thin Films and Surface Coatings (ThinFilms2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] hν依存型高感度紫外光電子分光法を用いて直接観察された酸化物薄膜のギャップ準位2018

    • Author(s)
      松崎 厚志,東海林 弘、石井 久夫
    • Organizer
      第28回日本MRS年次大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Shallow States” of Organic Films Observed by hν-Dependent High-Sensitivity Photoemission2018

    • Author(s)
      Kohei Shimizu, Yuki Yamaguchi, Junki Yamazaki, Tomoya Sato, Hiroumi Kinjo, Hisao Ishii
    • Organizer
      9th Workshop on Advanced Spectroscopy of Organic Materials for Electronic Applications (ASOMEA-IX)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 高感度光電子分光で観察したキャリア生成層HAT-CNの電子構造"2018

    • Author(s)
      清水 康平,山口 雄生,丸山 泰一,井手 一郎, 東海林 弘,石井 久夫
    • Organizer
      第79回応用物理学会秋季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Electronic structure of a film with TR observed by technique using photoelectron emission 2: Comparison with RxR2018

    • Author(s)
      佐野 大輔,武田祐希、秋山友希、金原加苗、村田武士、須藤雄気、石井久夫
    • Organizer
      第56回日本生物物理学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Gap states of lysozyme thin film observed by high-sensitivity UV photoelectron spectroscopy2018

    • Author(s)
      井手 一郎, 佐野 大輔, 丸山 慎太郎, 田中 有弥, 村田 武士, 石井 久夫 第
    • Organizer
      第56回日本生物物理学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 摩擦帯電メカニズムの解明に向けたポリエチレンモデル化合物のギャップ内準位の観測2018

    • Author(s)
      山口 雄生, 清水 康平, 松崎 厚志,佐野 大輔, 佐藤 友哉, 石井 久夫
    • Organizer
      第42回静電気学会全国大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Impact of UV/ozone treatment for PEDOT:PSS film on charge accumulation in organic light-emitting diodes investigated by displacement current measurement2018

    • Author(s)
      Yuya Tanaka, Koki Serizawa, Hokuto Hamada, Kavindra Maduwantha, Kaveenga Rasika Koswattage, Hisao Ishi
    • Organizer
      19th International Workshop on Inorganic and Organic Electroluminescence & 2018 International Conference on the Science and Technology of Emissive Displays and Lighting (EL 2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Electronic structure of pentacene field effect transistor observed by using high-sensitivity photoemission and operand-spectroscopic technique2018

    • Author(s)
      Taichi Maruyama,Keitaro Ikegami,Yuya Tanaka,Hisao Ishii
    • Organizer
      2018 KJF International Conference on Organic Materials for Electonics and Photonics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] High-Sensitivity UV Photoemission-Related Spectroscopies of Biomolecules2018

    • Author(s)
      Daisuke Sano, Ichiro Ide, Tomoki Akiyama, Yuki Takeda, Yuya Tanaka, Takeshi Murata, Yuki Sudo, and Hisao Ishii
    • Organizer
      2018 KJF International Conference on Organic Materials for Electronics and Photonics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 変位電流評価法で調べたPEDOT:PSSバッファ層へのUVオゾン処理効果の起源2018

    • Author(s)
      芹澤 洸希, 新藤 駿太, 田中 有弥, 石井 久夫
    • Organizer
      「有機EL討論会」第26回例会
    • Related Report
      2018 Annual Research Report
  • [Presentation] High-Sensitivity Photoemission-Related Spectroscopy Using Deep UV Light for Organic Films and Devices2018

    • Author(s)
      H. Ishii, K. Shimizu, K. Ikegami, A. Matsuzaki, T. Maruyama, Y. Yamaguchi, D Sano, I. Ide, and Y. Tanaka
    • Organizer
      International Conference on Advancing Molecular Spectroscopy (ICAMS)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Gap states of a polyethylene model oligomer observed by using high-sensitivity ultraviolet photoelectron spectroscopy"2018

    • Author(s)
      Yuki Yamaguchi, Kohei Shimizu, Atsushi Matsuzaki, Daisuke Sano, Yuya Tanaka, Hisao Ishii
    • Organizer
      10th International Symposium on Organic Molecular Electronics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Impact of orientation polarization on electron injection in OLED studied by negative ion photoemission spectroscopy and displacement current measurement2018

    • Author(s)
      T. Makino, H. Kinjo, Y. Tanaka, and H. Ishii
    • Organizer
      10th International Symposium on Organic Molecular Electronics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 励起波長依存型高感度紫外光電子分光法によるa-IGZO薄膜のギャップ内準位の直接観測2018

    • Author(s)
      松﨑厚志,佐藤友哉,東海林弘,石井久夫
    • Organizer
      第65回応用物理学会春季学術講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 高感度紫外光電子分光を用いた光受容タンパク質サーモフィリックロドプシンの電子構造 の直接観測2018

    • Author(s)
      佐野 大輔,松﨑 厚志,武田祐希,,村田 武士,須藤 雄気,石井 久夫
    • Organizer
      第65回応用物理学会春季学術講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 摩擦帯電メカニズムの解明に向けた絶縁性高分子材料の電子構造の観測:ポリエチレンモデル化合物の高感度光電子分光2018

    • Author(s)
      山口 雄生,清水 康平,松崎 厚志,佐野 大輔,佐藤 友哉,石井 久夫
    • Organizer
      第65回応用物理学会春季学術講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Electronic Structures of Organic Films and Interfaces Studied by High-Sensitivity Photoemission Technique2018

    • Author(s)
      T. Sato, J. Yamazaki, K. Shimizu, K. Ikegami, A. Matsuzaki, H. Kinjo, Y. Tanaka, Hisao Ishii
    • Organizer
      the International union of materials research society-International conference of advanced materials (IUMRS-ICAM) 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 光電子放出を用いたサーモフィリックロドプシン膜の電子構造の観測2018

    • Author(s)
      佐野 大輔,松﨑 厚志,武田祐希,宮内 拓也,村田 武士,須藤 雄気,石井 久夫
    • Organizer
      第55回日本生物物理学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] オペランド光電子収量分光法による有機トランジスタ構造における負のキャリア状態の直接観測2017

    • Author(s)
      池上 慶太郎,金城 拓海,佐藤 友哉,田中 有弥,石井 久夫
    • Organizer
      第64回応用物理学会春季学術講演会
    • Place of Presentation
      横浜
    • Year and Date
      2017-03-14
    • Related Report
      2016 Annual Research Report
  • [Presentation] 励起波長依存型高感度紫外光電子分光による絶縁性高分子膜のギャップ内準位を含む状態密度の直接評価2017

    • Author(s)
      佐藤友哉, Kaveenga Rasika Koswattage,中山泰生,石井久夫
    • Organizer
      平成29年度第18回静電気学会春期講演会
    • Place of Presentation
      東京
    • Year and Date
      2017-03-07
    • Related Report
      2016 Annual Research Report
  • [Presentation] Anion States in Organic Film and Device Studied by High Sensitivity UPS and PYS2017

    • Author(s)
      J. Yamazaki, T. Sato, K. Shimizu, H. Kinjo, Y. Ozawa, Y. Tanaka, H. Ishii
    • Organizer
      International Workshop on Organic Semiconductors: Charge transport, Doping and Electronic States
    • Place of Presentation
      Chiba, Japan
    • Year and Date
      2017-01-13
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] High-Sensitivity Photoemission-Related Techniques for Organic Films and Interfaces: Bridging Electronic Structures and Practical Device Properties2017

    • Author(s)
      T. Sato, K. Shimizu, K. Ikegami, A. Matsuzaki, T. Maruyama,
    • Organizer
      International Conference on Advanced Materials and Devices (ICAMD 2017)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Electronic Structures of Organic Semiconductor Devices Studied by Techniques Using Photoelectron Emission2017

    • Author(s)
      Hisao Ishii
    • Organizer
      The 67th conference of Japan Society of Coodination Chemistry Symposium S4: New Aspects of Photofunctional Interfaces Based on Coordination Chemistry
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] 高感度光電子分光による有機材料薄膜・界面の微弱準位の計測2017

    • Author(s)
      佐藤友哉、清水康平、池上慶太郎、松﨑厚志、田中有弥、石井久夫
    • Organizer
      M&BE 新分野開拓研究会 2017「有機・バイオエレクトロニクスにおける先端計測技術の進展」
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] 超高感度光電子収量分光法による有機トランジスタ構造に注入された負イオン状態の直接観測2017

    • Author(s)
      池上 慶太郎、金城 拓海、佐藤 友哉、田中 有弥、石井 久夫
    • Organizer
      第78回応用物理学会秋季学術講演会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Direct observation of carrier state in organic transistors by negative ion photoelectron yield spectroscopy2017

    • Author(s)
      Keitaro Ikegami, Taichi Maruyama, Hiroumi Kinjo, Tomoya Sato, Yuya Tanaka, and Hisao Ishii
    • Organizer
      International Conference on Advanced Materials and Devices (ICAMD 2017)
    • Related Report
      2017 Annual Research Report
  • [Presentation] Controlling Charge Injection and Transport in Organic Electronic Devices by Dipolar Doping2017

    • Author(s)
      Alexander Hofmann, Lars Jaeger, Simon Zuefle, Stephane Altazin, Martin Neukom, Kohei Shimizu, Atsushi Matsuzaki, Beat Ruhstaller, Hisao Ishii, Wolfgang Bruetting
    • Organizer
      2017 MRS Fall Meeting
    • Related Report
      2017 Annual Research Report
  • [Presentation] 有機トランジスタ構造の負イオン光電子収量分光によるキャリア状態の直接観測"2017

    • Author(s)
      池上 慶太郎、丸山 泰一、金城 拓海、佐藤 友哉、田中 有弥、石井 久夫
    • Organizer
      第7回CSJ化学フェスタ2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] 高感度光電子分光とKelvin法による逆構造有機EL素子における電子注入改善機構の解明2017

    • Author(s)
      清水康平,佐藤友哉,田中有弥,石井久夫
    • Organizer
      第7回CSJ化学フェスタ2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] 高感度紫外光電子分光法による透明導電性薄膜の電子構造観測2017

    • Author(s)
      松﨑厚志,佐藤友哉,東海林弘,石井 久夫
    • Organizer
      第7回CSJ化学フェスタ2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] 超高感度紫外光電子分光を用いた生体分子サーモフィリックロドプシンの電子構造の観測2017

    • Author(s)
      佐野 大輔,松﨑 厚志,武田祐希,宮内 拓也,村田 武士,須藤 雄気,石井 久夫
    • Organizer
      第7回CSJ化学フェスタ2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] Impact of Orientation Polarization in OLEDs Studied by Displacement Current Measurement and High-Sensitivity Photoemission2017

    • Author(s)
      Hisao Ishii, Hiroumi Kinjo, Takahiro Makino, Hyunsoo Lim, Tomoya Sato, Yuya Tanaka, Yutaka Noguchi
    • Organizer
      9th International Conference on Molecular Electronics and Bioelectronics (M&BE9)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Electronic Structure at Bebq2/PEI/ITO Model Interfaces in Inverted OLED Devices Studied by High-Sensitivity Photoemission Spectroscopy2017

    • Author(s)
      Kohei Shimizu, Hirohiko Fukagawa, Katsuyuki Morii, Hiroumi Kinjo, Tomoya Sato, Hisao Ishii
    • Organizer
      14th European Conference on Molecular Electronics
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Direct Observation of Negative Carriers Injected into a Transistor Structure Observed by High-Sensitivity Photoelectron Yield Spectroscopy2017

    • Author(s)
      Keitaro Ikegami, Hiroumi Kinjo, Tomoya Sato, Yuya Tanaka, and Hisao Ishii
    • Organizer
      IUMRS-ICAM2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Direct Observation of Gap States in Oxide Thin Films by hν-Dependent High-Sensitivity UV Photoemission Spectroscopy2017

    • Author(s)
      Atsushi Matsuzaki,Tomoya Sato,Hiroshi Tokairin, Hisao Ishii
    • Organizer
      29th International Conference on Defects in Semiconductors(ICDS-29)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Gap States of Organic Films Observed by hn-Dependent High-Sensitivity UV Photoemission Spectroscopy2017

    • Author(s)
      omoya Sato, Junki Yamazaki, Kohei Shimizu, Atsushi Matsuzaki, Keitaro Ikegami, Yuya Tanaka, and Hisao Ishii
    • Organizer
      29th International Conference on Defects in Semiconductors(ICDS-29)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Electronic Structure of OLED Host Materials Studied by High-Sensitivity Photoemission Spectroscopy: Photoemission from Shallow State above Fermi Level"2017

    • Author(s)
      Kohei Shimizu, Junki Yamazaki, Hirohiko Fukagawa, Katsuyuki Morii, Hiroumi Kinjo, Tomoya Sato, Hisao Ishii
    • Organizer
      9th International Conference on Molecular Electronics and Bioelectronics
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] オペランド光電子収量分光法による有機トランジスタ構造における負のキャリア状態の直接観測2017

    • Author(s)
      池上 慶太郎、金城 拓海、佐藤 友哉、田中 有弥、石井 久夫
    • Organizer
      第64回応用物理学会春季学術講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Bulk and Interfacial Electronic Structures of Organic Semiconductors Studied by Photoemission-Related Techniques: Energy Level Alignment, Gap States, and Carrier States2016

    • Author(s)
      H. Ishii
    • Organizer
      The 12th International Conference on nano-Molecular Electronics
    • Place of Presentation
      Kobe, Japan
    • Year and Date
      2016-12-14
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] High-Sensitivity UV Photoemission of intrinsic and doped OLED films2016

    • Author(s)
      J. Yamazaki, T. Sato, Y. Tanaka, H. Ishii
    • Organizer
      12th International Conference on Nano-Molecular Electronics
    • Place of Presentation
      Kobe, Japan
    • Year and Date
      2016-12-14
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] High-Sensitivity Photoemission Spectroscopy of OLED-related Films: Photoemission from Shallow States above Fermi Level2016

    • Author(s)
      J. Yamazaki, T. Sato, K. Shimizu, H. Kinjo, Y. Ozawa, Y. Tanaka, and H. Ishii
    • Organizer
      The 4th Workshop on Physics in Organic Optoelectronics
    • Place of Presentation
      Soochow University, Suzhou, China
    • Year and Date
      2016-12-08
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Weak structural order in OLED films Studied by Displacement Current Measurement and High-Sensitivity Photoemission Spectroscopy: Energetic Stabilization of Anion States due to Orientation Polarization2016

    • Author(s)
      H. Kinjo, T. Sato, Y. Noguchi, Y. Nakayama, and H. Ishii
    • Organizer
      2016 MRS Fall Meeting
    • Place of Presentation
      Boston, USA
    • Year and Date
      2016-11-26
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] High-Sensitivity Photoemission of Bebq2/PEI/ITO Model Interfaces of Inverted Organic Light-Emitting Diode2016

    • Author(s)
      Kohei Shimizu, Hirohiko Fukagawa, Katsuyuki Morii, Hiroumi Kinjo, Tomoya Sato, Hisao Ishii
    • Organizer
      2016 MRS Fall Meeting
    • Place of Presentation
      Boston, USA
    • Year and Date
      2016-11-26
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] hν-Dependent High-Sensitivity Photoemission Spectroscopy to Probe Density-of-States of Organic Films2016

    • Author(s)
      T. Sato, J. Yamazaki, Y. Ozawa, Y. Tanaka and H. Ishii
    • Organizer
      The 8th Workshop on Advanced Spectroscopy of Organic Materials for Electronic Applications (ASOMEA-VIII)
    • Place of Presentation
      Okazaki, Japan
    • Year and Date
      2016-11-23
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 高感度光電子分光によるCBP薄膜の電子構造観察2016

    • Author(s)
      山﨑 純暉,佐藤 友哉,田中 有弥,石井 久夫
    • Organizer
      「有機EL討論会」第23回例会
    • Place of Presentation
      富山
    • Year and Date
      2016-11-17
    • Related Report
      2016 Annual Research Report
  • [Presentation] Film and Interface Electronic Structures of Organic Semiconductors Studied by High-Sensitivity UV Photoemission Spectroscopy2016

    • Author(s)
      H. Ishii, T. Sato, K. Shimizu, J. Yamazaki, H. Kinjo, Y. Tanaka
    • Organizer
      12th Conduction and Photoconduction in Organic Solids and Related Phenomena
    • Place of Presentation
      Tokyo, Japan
    • Year and Date
      2016-10-18
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 高感度紫外光電子分光による有機半導体のバルク・界面電子構造評価2016

    • Author(s)
      石井 久夫, 金城 拓海, 佐藤 友哉
    • Organizer
      第77回応用物理学会秋季学術講演会 シンポジウム「ナノ界面現象と評価技術の現状と課題」
    • Place of Presentation
      朱鷺メッセ、新潟
    • Year and Date
      2016-09-13
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Book] Compendium of Surface and Interface Analysis, chap.75 "Photoelectron Yield Spectroscopy"2018

    • Author(s)
      Hisao Ishii (The surface science society of Japan (ed.))
    • Total Pages
      853
    • Publisher
      Springer
    • ISBN
      9811061556
    • Related Report
      2017 Annual Research Report
  • [Remarks] ”石井久夫”のWEBページ

    • URL

      http://ishii-lab.in.coocan.jp/pukiwiki/?FrontPage

    • Related Report
      2019 Annual Research Report
  • [Patent(Industrial Property Rights)] 酸化物半導体膜のギャップ内準位における電子状態密度の測定方法およ び測定装置2017

    • Inventor(s)
      東海林弘、石井久夫、松崎厚志、佐藤友哉
    • Industrial Property Rights Holder
      東海林弘、石井久夫、松崎厚志、佐藤友哉
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2017-146741
    • Filing Date
      2017
    • Related Report
      2017 Annual Research Report

URL: 

Published: 2016-04-21   Modified: 2021-02-19  

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