TRMC@Inerfaces: Electron Mobility Measurement at Conjugated Molecules-Insulators Interfaces

• Project/Area Number: 26620104
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Polymer chemistry
• Research Institution: Kyoto University (2015-2016); Osaka University (2014)
• Principal Investigator: SEKI Shu 京都大学, 工学研究科, 教授 (30273709)
• Co-Investigator(Kenkyū-buntansha): 佐伯 昭紀 大阪大学, 工学研究科, 准教授 (10362625) ; 櫻井 庸明 京都大学, 工学研究科, 助教 (50632907)
• Research Collaborator: CHOI Wookjin 京都大学, 大学院工学研究科, 研究員 ; TSUTSUI Yusuke 京都大学, 大学院工学研究科, 研究員 ; MATSUDA Wakana
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: Interfaces / マイクロ波 / 移動度 / 伝導度 / 高分子構造 / 界面 / 電荷注入 / キャリア / グラフェン / 非接触 / 非破壊 / TRMC / TRMC@Interfaces / 持続長 / ヘテロ接合 / 光電変換 / FI-TRMC / 電荷移動度

Outline of Final Research Achievements

Field-Induced Time-Resolved Microwave Conductivity (FI-TRMC) measurement technique has been developed to probe local motion of charge carriers at polymeric dielectrics-organic semiconductor interfaces. This technique revealed high potential of several isomers with BTBT or BBTBDT core unit as positive charge conductors. Structural analysis of the high potential isomers at the interfaces showed unique herringbone-type structures with 2D pathways stabilized by the Sulfur-Sulfur interactions for the charge carriers, which was also confirmed by the DFT based theoretical calculations. The carrier diffusion model over the 2D transport layers has successfully reproduced the transport mechanisms in the active layers based on not only the above compounds but also the other organic semiconductor molecules, showing wide applicability of the present models to deduce intrinsic value of mobility as well as the determinant processes including trap density, depth, and free/trapped charge carrier ratio.

Research Products

• [Int'l Joint Research] ブリュッセル自由大学(ベルギー)
• [Int'l Joint Research] Karlsruhe Institute of Technology(ドイツ)
• [Int'l Joint Research] Universidad Complutense de Madrid(スペイン)
• [Journal Article] Rapid Evaluation of Electron Mobilities at Semiconductor-Insulator Interfaces in an Ambient Atmosphere by a Contactless Microwave-Based Technique (2017)
  • Author(s): J. Inoue, Y. Tsutsui, W. Choi, K. Kubota, T. Sakurai, and S. Seki
  • Journal Title: ACS Omega Volume: 2 Issue: 1 Pages: 164-170
  • DOI: 10.1021/acsomega.6b00428
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Complex permittivity analysis revisited: Microwave spectroscopy of organic semiconductors with resonant cavity (2017)
  • Author(s): W. Choi, Y. Tsutsui, T. Sakurai, and S. Seki
  • Journal Title: Appl. Phys. Lett. Volume: 110 Issue: 15 Pages: 153303-153303
  • DOI: 10.1063/1.4980078
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Efficient Benzodithiophene/Benzothiadiazole-Based n-Channel Charge Transporters (2017)
  • Author(s): R. S. Torrientes, J. Calbo, W. Matsuda, W. Choi, J. Santos, S. Seki, E. Orti, and N. Martin
  • Journal Title: ChemPlusChem Volume: 82 Issue: 7 Pages: 1105-1111
  • DOI: 10.1002/cplu.201700047
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] A new class of epitaxial porphyrin metal-organic framework thin films with extremely high photocarrier generation efficiency: promising materials for all-solid-state solar cell (2016)
  • Author(s): J. Liu, W. Zhou, J. Liu, Y. Fujimori, T. Higashino, H. Imahori, X. Jiang, J. Zhao, T. Sakurai, Y. Hattori, W. Matsuda, S. Seki, S. K. Garlapati, S. Dasgupta, E. Redel, L. Sun, and C. Wöll
  • Journal Title: J. Mater. Chem. A Volume: 4 Issue: 33 Pages: 12739-12747
  • DOI: 10.1039/c6ta04898f
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Unraveling Unprecedented Charge Carrier Mobility through Structure Property Relationship of Four Isomers of Didodecyl[1]benzothieno[3,2-b][1]benzothiophene (2016)
  • Author(s): Y. Tsutsui, G. Schweicher, B. Chattopadhyay, T. Sakurai, J.-B. Arlin, C. Ruzié, A. Aliev, A. Ciesielski, S. Colella, A. R. Kennedy, V. Lemaur, Y. Olivier, R. Hadji, L. Sanguinet, F. Castet, D. Beljonne, J. Cornil, P. Samorì, S. Seki, and Y. H. Geerts
  • Journal Title: Adv. Mater. Volume: 28 Issue: 33 Pages: 7106-7114
  • DOI: 10.1002/adma.201601285
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Highly ordered n/p-co-assembled materials from small molecules, with remarkable charge mobilities (2015)
  • Author(s): Javier Lopez-Andarias, M Jose Rodriguez, Carmen Atienza, Juan Luis Lopez, Tsubasa Mikie, Santiago Casado, Shu Seki, Jose Lopez Carrascosa, Nazario Martin
  • Journal Title: J. Am. Chem. Soc. Volume: 137 Issue: 2 Pages: 893-897
  • DOI: 10.1021/ja510946c
  • Peer Reviewed
• [Journal Article] Semiconducting Nanotubes by Intrachain Folding Following Macroscopic Assembly of a Naphthalene Diimide (NDI) Appended Polyurethane (2015)
  • Author(s): T. Mondal, T. Sakurai, S. Yoneda, S. Seki, and S. Ghosh
  • Journal Title: Macromolecules Volume: 48 Issue: 4 Pages: 879-888
  • DOI: 10.1021/ma502410d
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Pressure Modulation of Backbone Conformation and Intermolecular Distance of Conjugated Polymers Toward Understanding the Dynamism of π-Figuration of their Conjugated System (2015)
  • Author(s): Y. Noguchi, A. Saeki, T. Fujiwara, S. Yamanaka, M. Kumano, T. Sakurai, N. Matsuyama, M. Nakano, N. Hirao, Y. Ohishi, and S. Seki
  • Journal Title: J. Phys. Chem. B Volume: 119 Issue: 24 Pages: 7219-7230
  • DOI: 10.1021/jp5100389
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Evaluation of the intrinsic charge carrier transporting properties of linear- and bent-shaped π-extended benzo-fused thieno[3,2-b]thiophenes (2015)
  • Author(s): Y. Tsutsui, T. Sakurai, S. Minami, K. Hirano, T. Satoh, W. Matsuda, K. Kato, M. Takata, M. Miura and S. Seki
  • Journal Title: Phys. Chem. Chem. Phys. Volume: 17 Issue: 15 Pages: 9624-9628
  • DOI: 10.1039/c5cp00785b
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Photoinduced Charge-Carrier Generation in Epitaxial MOF Thin Films: High Efficiency as a Result of an Indirect Electronic Band Gap? (2015)
  • Author(s): J. Liu, W. Zhou, J. Liu, I. Howard, G. Kilibarda, S. Schlabach, D. Coupry, M. Addicoat, S. Yoneda, Y. Tsutsui, T. Sakurai, S. Seki, Z. Wang, P. Lindemann, E. Redel, T. Heine, and C. Wöll
  • Journal Title: Angew. Chem. Int. Ed Volume: 54 Issue: 25 Pages: 7441-7445
  • DOI: 10.1002/anie.201501862
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Two-Dimensional Tetrathiafulvalene Covalent Organic Frameworks: Towards Latticed Conductive Organic Salts (2014)
  • Author(s): S. Jin, T. Sakurai, T. Kowalczyk, S. Dalapati, F. Xu, H. Wei, X. Chen, J. Gao, S. Seki, S. Irle, and D. Jiang
  • Journal Title: Chem. Eur. J. Volume: 20 Issue: 45 Pages: 14608-14613
  • DOI: 10.1002/chem.201402844
  • Peer Reviewed
• [Journal Article] 2,6-Diphenyl- and -Distyryl-Capped 3,7-Dialkoxybenzo[1,2-b:4,5-b’]dithiophenes and Their Dithieno-Annulated Higher Homologs: Structural Phase Transition with Enhanced Charge Carrier Mobility (2014)
  • Author(s): S. Minami, M. Ide, K. Hirano, T. Satoh, T. Sakurai, K. Kato, M. Takata, S. Seki, and M. Miura
  • Journal Title: Phys. Chem. Chem. Phys. Volume: 16 Issue: 35 Pages: 18805-18812
  • DOI: 10.1039/c4cp03002h
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Ion-based assemblies of planar anion complexes and cationic PtII complexes (2014)
  • Author(s): Sekiya, R.; Tsutsui, Y.; Choi, Y.; Sakurai, T.; Seki, S.; Bando, Y.; Maeda, H.
  • Journal Title: Chem. Commun. Volume: 50 Issue: 73 Pages: 10615-10618
  • DOI: 10.1039/c4cc04565c
  • Peer Reviewed
• [Journal Article] Non-contact, non-destructive, quantitative probing of interfacial trap sites for charge carrier transport at semiconductor-insulator boundary (2014)
  • Author(s): W. Choi, T. Miyakai, T. Sakurai, A. Saeki, M. Yokoyama, and S. Seki
  • Journal Title: Appl. Phys. Lett. Volume: 105 Issue: 3
  • DOI: 10.1063/1.4891052
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Electron mass and conductivity on π-conjugated molecules in their condensed phases and at interfaces (2016)
  • Author(s): Shu Seki
  • Organizer: Solvay Workshop
  • Place of Presentation: Université Libre de Bruxelles
  • Year and Date: 2016-11-15
  • Int'l Joint Research / Invited
• [Presentation] マイクロ波を用いた低分子有機半導体の局所伝導度評価法の開発 (2016)
  • Author(s): 筒井 祐介、崔 旭鎮、櫻井 庸明、関 修平
  • Organizer: 第77回応用物理学会秋季学術講演会
  • Place of Presentation: 新潟県朱鷺メッセ
  • Year and Date: 2016-09-13
  • Invited
• [Presentation] 共振器を用いたマイクロ波分光による有機半導体の複素誘電率解析 (2016)
  • Author(s): 崔 旭鎮、筒井 祐介、櫻井 庸明、関 修平
  • Organizer: 第77回応用物理学会秋季学術講演会
  • Place of Presentation: 新潟県朱鷺メッセ
  • Year and Date: 2016-09-13
• [Presentation] n型有機半導体/絶縁体界面における空間選択的キャリアダイナミクス評価 (2016)
  • Author(s): 井上 純一、筒井 祐介、崔 旭鎮、櫻井 庸明、関 修平
  • Organizer: 第5回JACI/GSCシンポジウム
  • Place of Presentation: ANAクラウンプラザホテル神戸
  • Year and Date: 2016-06-02
• [Presentation] Electron Mobility of Zero, One and Two Dimensional Nanocarbons in their Bulk States / Interfaces (2015)
  • Author(s): Shu Seki
  • Organizer: PACIFICHEM2015
  • Place of Presentation: Honolulu, Hawaii USA
  • Year and Date: 2015-12-15
  • Int'l Joint Research / Invited
• [Presentation] マイクロ波を用いた電荷輸送の非接触・非破壊計測と界面・高圧下伝導計測への展開 (2015)
  • Author(s): 関 修平
  • Organizer: 第64回高分子討論会
  • Place of Presentation: 東北大学川内キャンパス
  • Year and Date: 2015-09-15
  • Invited
• [Presentation] マイクロ波共振法によるグラフェン上の電荷輸送特性評価 (2015)
  • Author(s): 崔 旭鎮，筒井 祐介，林 健太郎，竹内 友宏，櫻井 庸明，関 修平
  • Organizer: 第76回応用物理学会秋季学術講演会
  • Place of Presentation: 名古屋国際会議場
  • Year and Date: 2015-09-13
• [Presentation] 有機デバイスのPN接合界面における電荷輸送特性評価 (2015)
  • Author(s): 崔 旭鎮，筒井 祐介，井上 純一，櫻井 庸明，関 修平
  • Organizer: 第76回応用物理学会秋季学術講演会
  • Place of Presentation: 名古屋国際会議場
  • Year and Date: 2015-09-13
• [Presentation] 電界注入型マイクロ波共振法による界面における電荷キャリア輸送評価 (2015)
  • Author(s): 筒井 祐介, 崔 旭鎮, 櫻井 庸明, 佐伯 昭紀, 関 修平
  • Organizer: 第62回応用物理学会春季学術講演会
  • Place of Presentation: 東海大学 湘南キャンパス(神奈川県平塚市)
  • Year and Date: 2015-03-11 – 2015-03-14
• [Presentation] マイクロ波を用いた界面電荷輸送特性の非接触定量分析 (2014)
  • Author(s): 崔 旭鎮
  • Organizer: 第１回π造形科学若手研究会
  • Place of Presentation: 紀州鉄道熱海ホテル（静岡県熱海市）
  • Year and Date: 2014-11-21 – 2014-11-22
• [Presentation] Non-Destructive Probing of Charge Carrier Transport in Electronic Conductive Molecular Materials and Their Interfaces (2014)
  • Author(s): Shu Seki
  • Organizer: International Symposium of Integrated Molecular/Materials Science and Engineering 2014
  • Place of Presentation: Southeast University, Nanjing, China
  • Year and Date: 2014-11-01 – 2014-11-03
  • Invited
• [Presentation] 非混和性側鎖を駆動力とするπ電子系ディスコチック液晶の設計と機能 (2014)
  • Author(s): 筒井 祐介・櫻井 庸明・関 修平
  • Organizer: 第63回高分子討論会
  • Place of Presentation: 長崎大学（長崎県長崎市）
  • Year and Date: 2014-09-24 – 2014-09-26
• [Presentation] マイクロ波法によるグラフェン上のディラック電子の電荷輸送特性評価 (2014)
  • Author(s): 崔 旭鎮、櫻井庸明、佐伯昭紀、関 修平
  • Organizer: 第７５回応用物理学会秋季学術講演会
  • Place of Presentation: 北海道大学（北海道札幌市）
  • Year and Date: 2014-09-17 – 2014-09-20
• [Remarks] 京都大学大学院工学研究科 分子工学専攻 関研究室
  • URL: http://www.moleng.kyoto-u.ac.jp/~moleng_06/index-j.htm
• [Remarks] FI-TRMC法
  • URL: http://www.moleng.kyoto-u.ac.jp/~moleng_06/research/index.html