Functions and physics of organic single-crystal interfaces

2012 Fiscal Year Final Research Report

• Project/Area Number: 22245032
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Functional materials/Devices
• Research Institution: Osaka University
• Principal Investigator: TAKEYA Jun-ichi 大阪大学, 産業科学研究所, 教授 (20371289)
• Co-Investigator(Kenkyū-buntansha): UNO Mayumi 大阪府立産業技術総合研究所, 情報電子部, 主任研究員 (90393298) ; YAMAMOTO Takashi 大阪大学, 理学研究科, 助教 (20511017) ; NAKAZAWA Yasuhiro 大阪大学, 理学研究科, 教授 (60222163)
• Project Period (FY): 2010 – 2012
• Keywords: 有機半導体デバイス

Research Abstract

This project has aimed at elucidating fundamental electronic states at the novel interfaces of organic single crystal semiconductors. Some of printed organic crystalline semiconductors show remarkably high mobility as compared with that of amorphous silicon, so that these materials are expected to be implemented in next-generation printed and flexible electronics industry. After our comprehensive studies of such systems from chemical, physical and engineering approaches, we got results of even higher mobility in newly synthesized semiconductors. The charge transport mechanism is continuously studied in terms of fundamental electronic natures between hopping and band-like transport. Furthermore, we have introduced experiments of the two -dimensional organic single-crystalline interfaces under high pressure, so that the structure-property relationship exhibited anomalous and giant pressure effects in thiphene-based organic single-crystal transistors. The above results gives significant contribution in understanding electronic properties of organic two-dimensional electronic systems.

Research Products

• [Journal Article] Anomalous pressure effect in heteroacene organic field-effect transistors (2013)
  • Author(s): K. Sakai, Y. Okada, S. Kitaoka, J.Tsurumi, Y. Ohishi, A. Fujiwara, K. Takimiya, and, J. Takeya
  • Journal Title: Phys. Rev. Lett Volume: 110 Pages: 096603
  • URL: http://prl.aps.org/abstract/PRL/v110/i9/e096603
  • Peer Reviewed
• [Journal Article] Flexible Three-Dimensional Organic Field-Effect Transistors Fabricated by an Imprinting Technique (2012)
  • Author(s): Rie Nakahara, Mayumi Uno, Takafumi Uemura, Kazuo Takimiya, Jun Takeya
  • Journal Title: Adv. Mater Volume: 24 Pages: 5212-5216
  • URL: http://onlinelibrary.wiley.com/doi/10.1002/adma.201201234/abstract;jsessionid=AAC43869FA3FBD0EA2B8F42F94B3D8F7.d02t02
  • Peer Reviewed
• [Journal Article] Temperature dependence of the Hall effect in pentacene field-effect transistors: Possibility of charge decoherence induced by molecular fluctuations (2012)
  • Author(s): T. Uemura, M. Yamagishi, J. Soeda, Y. Takatsuki, Y. Okada, Y. Nakazawa, and J. Takeya
  • Journal Title: Phys. Rev. B Volume: 85 Pages: 035313
  • URL: http://prb.aps.org/abstract/PRB/v85/i3/e035313
  • Peer Reviewed
• [Journal Article] 【Editors' Suggestion】 Charge transport and Hall effect in rubrene single-crystal transistors under high pressure (2011)
  • Author(s): Y. Okada, K. Sakai, T. Uemura, Y. Nakazawa, and J. Takeya
  • Journal Title: Phys. Rev. B Volume: 84 Pages: 245308
  • Peer Reviewed
• [Journal Article] High electron mobility in air forN,N'-1H,1H-perfluorobutyldicyanoperylene carboxydi-imide solution-crystallized thin-film transistors on hydrophobic surfaces (2011)
  • Author(s): J. Soeda, T. Uemura, Y. Mizuno, A. Nakao, Y. Nakazawa, A. Facchetti, and J. Takeya
  • Journal Title: Adv. Mater Volume: 23 Pages: 3681-3685
  • URL: http://onlinelibrary.wiley.com/doi/10.1002/adma.201101467/abstract
  • Peer Reviewed
• [Journal Article] Solution-crystallized organic field-effect transistors with charge-acceptor layers: high-mobility and low-threshold-voltage operation in air (2011)
  • Author(s): J. Soeda, Y. Hirose, M. Yamagishi, A. Nakao, T. Uemura, K. Nakayama, M. Uno, Y.Nakazawa, K. Takimiya, and J. Takeya
  • Journal Title: Adv. Mater Volume: 23 Pages: 3309-3314
  • URL: http://onlinelibrary.wiley.com/doi/10.1002/adma.201101027/abstract
  • Peer Reviewed
• [Journal Article] High-speed flexible organic field-effect transistors with a 3D Structure (2011)
  • Author(s): M. Uno, K. Nakayama, J. Soeda, Y. Hirose, K. Miwa, T. Uemura, A. Nakao, K. Takimiya, and J. Takeya
  • Journal Title: Adv. Mater Volume: 23 Pages: 3047-3051
  • URL: http://onlinelibrary.wiley.com/doi/10.1002/adma.201101179/abstract
  • Peer Reviewed
• [Journal Article] Patternable solution-crystallized organic transistors with high charge carrier mobility (2011)
  • Author(s): K. Nakayama, Y. Hirose, J. Soeda, M. Yoshizumi, T. Uemura, M. Uno, W. Li, J. Kang, M. Yamagishi, Y. Okada, E. Miyazaki, Y. Nakazawa, A. Nakao, K. Takimiya, and J. Takeya
  • Journal Title: Adv. Mater Volume: 23 Pages: 1626-1629
  • URL: http://onlinelibrary.wiley.com/doi/10.1002/adma.201004387/abstract
  • Peer Reviewed
• [Journal Article] Free-electron-like hall effect in high-mobility organic thin-filmtransistors (2010)
  • Author(s): M. Yamagishi, J. Soeda, T. Uemura, Y. Okada, Y. Takatsuki, T .Nishikawa, Y. Nakazawa, I. Doi, K. Takimiya, and J. Takeya
  • Journal Title: Phys. Rev. B (Rapid Communications) Volume: 81 Pages: 161306
  • URL: http://prb.aps.org/abstract/PRB/v81/i16/e161306
  • Peer Reviewed
• [Journal Article] Monolithic complementary inverters based on organic single crystals (2010)
  • Author(s): T. Uemura, M. Yamagishi, Y. Okada, K. Nakayama, M. Yoshizumi, M. Uno, and J. Takeya
  • Journal Title: Adv. Mater Volume: 22 Pages: 3938-3941
  • URL: http://onlinelibrary.wiley.com/doi/10.1002/adma.201000480/abstract
  • Peer Reviewed
• [Presentation] Intermolecular electronic coherence in organic single-crystal transistors and high-speed organic electronics (2013)
  • Author(s): J. Takeya
  • Organizer: German-Japanese International Workshop
  • Place of Presentation: Magnus-Haus Berlin, Germany.
  • Year and Date: 2013-01-10
• [Presentation] Intermolecular electronic coherence and high-speed operation in organic transistors (2012)
  • Author(s): J. Takeya
  • Organizer: International Workshop on Organic Field-effect Transistors and Functional Interfaces
  • Place of Presentation: Princeton, NJ, USA
  • Year and Date: 20121027-31
• [Presentation] Intermolecular electronic coherence in organic single-crystal transistors and high-speed organic electronics (2012)
  • Author(s): J. Takeya
  • Organizer: Material Research Society Fall Meeting
  • Place of Presentation: Hynes Convention Center, Boston, MA, USA
  • Year and Date: 2012-11-28
• [Presentation] Solution-crystalized organictransistors and high-speed organic electronics (2012)
  • Author(s): J. Takeya
  • Organizer: The 10th International Nanotech Symposium & Nano Convergence Expo in Korea
  • Place of Presentation: Coex, Seoul, Korea
  • Year and Date: 2012-08-16
• [Presentation] High-mobility charge transport in printed organic semiconductor crystals (2012)
  • Author(s): J. Takeya
  • Organizer: International Conference on Science and Technology of Synthetic Metals
  • Place of Presentation: The Hyatt Regency hotel in Downtown Atlanta, GA, USA
  • Year and Date: 2012-07-09
• [Remarks]
  • URL: http://www.sanken.osaka-u.ac.jp/labs/aed/index.html
• [Patent(Industrial Property Rights)] 薄膜トランジスタ (2013)
  • Inventor(s): 竹谷純一、岡地崇之
  • Industrial Property Rights Holder: 大阪大学、住友化学株式会社
  • Industrial Property Number: 特願 2013-044708 号
  • Filing Date: 2013-03-06
• [Patent(Industrial Property Rights)] カルコゲン含有有機化合物およびその用途 (2013)
  • Inventor(s): 竹谷純一、岡本敏宏、三津井親彦、松下武司
  • Industrial Property Rights Holder: 大阪大学、JNC 株式会社
  • Industrial Property Number: 特願 2013-042762 号
  • Filing Date: 2013-03-05
• [Patent(Industrial Property Rights)] 有機半導体膜の製造方法、その製造装置および有機半導体基板 (2013)
  • Inventor(s): 村田和弘、竹谷純一、岡本敏宏
  • Industrial Property Rights Holder: 大阪大学、株式会社 SIJ テクノロジ
  • Industrial Property Number: 特願 2013-013701 号
  • Filing Date: 2013-01-28
• [Patent(Industrial Property Rights)] 三次元構造を有する薄膜トランジスタ及びその製造方法 (2013)
  • Inventor(s): 竹谷純一、宇野真由美
  • Industrial Property Rights Holder: 大阪大学、大阪府立産業技術総合研究所
  • Industrial Property Number: PCT/JP2013-052574
  • Filing Date: 2013-02-05
  • Overseas
• [Patent(Industrial Property Rights)] 有機トランジスタ及びその製造方法 (2012)
  • Inventor(s): 竹谷純一、植村隆文
  • Industrial Property Rights Holder: 大阪大学
  • Industrial Property Number: 特願 2012-185621 号
  • Filing Date: 2012-08-24
• [Patent(Industrial Property Rights)] 自己組織化単分子膜形成用の化合物及びそれを用いた有機半導体素子 (2012)
  • Inventor(s): 竹谷純一、岡本敏宏、植村隆文
  • Industrial Property Rights Holder: 大阪大学
  • Industrial Property Number: PCT/JP2012/068972
  • Filing Date: 2012-07-26
  • Overseas
• [Patent(Industrial Property Rights)] 有機トランジスタ及びその製造方法 (2012)
  • Inventor(s): 竹谷純一、植村隆文、宇野真由美
  • Industrial Property Rights Holder: 大阪大学、大阪府立産業技術総合研究所
  • Industrial Property Number: PCT/JP2012/068219
  • Filing Date: 2012-07-18
  • Overseas