印刷できるＬＳＩ用有機単結晶半導体トランジスタの物理モデル開発

• Project/Area Number: 14F04777
• Research Category: Grant-in-Aid for JSPS Fellows
• Allocation Type: Single-year Grants
• Section: 外国
• Research Field: Device related chemistry
• Research Institution: The University of Tokyo
• Principal Investigator: 竹谷 純一 東京大学, 新領域創成科学研究科, 教授 (20371289)
• Co-Investigator(Kenkyū-buntansha): HAEUSERMANN ROGER 東京大学, 新領域創成科学研究科, 外国人特別研究員 ; HAEUSERMANN Roger 東京大学, 新領域創成科学研究科, 外国人特別研究員
• Project Period (FY): 2014-04-25 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥1,100,000 (Direct Cost: ¥1,100,000); Fiscal Year 2015: ¥800,000 (Direct Cost: ¥800,000); Fiscal Year 2014: ¥300,000 (Direct Cost: ¥300,000)
• Keywords: 有機エレクトロニクス / 半導体 / フレキシブルエレクトロニクス / 集積回路 / 電界効果トランジスタ / 接触抵抗 / 電荷注入 / 電気特性変動シミュレーション

Outline of Annual Research Achievements

Charge injection from the metal into the semiconductor is a crucial step in every device using organic semiconductors. Understanding this process is necessary to further improve device performance. In the last year, we analyzed a about 20 transistors with a very distinct charge injection problem. By combining these results with a self developed drift diffusion solver we have been able to explain some of these results. Further implementation of physical processes, allowed us to explain the observed injection behavior.
Starting from these models, we have developed a simplified version, which can be solved analytically. This model has been implemented into a SPICE simulation package. The first Investigations have been very promising.

Research Progress Status

27年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

27年度が最終年度であるため、記入しない。

Research Products

• [Journal Article] Suppressing molecular vibrations in organic semiconductors by inducing strain (2016)
  • Author(s): T. Kubo, R. Haeusermann, J. Tsurumi, J. Soeda, Y. Okada, Y. Yamashita, N. Akamatsu, A. Shishido, C. Mitsui, T. Okamoto, S. Yanagisawa, H. Matsui, and J. Takeya
  • Journal Title: Nature Communications Volume: 7 Issue: 1 Pages: 11156-11156
  • DOI: 10.1038/ncomms11156
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Emergence of charge coherence in soft molecular organic semiconductors by suppressing thermal fluctuations (2016)
  • Author(s): K. Sakai, Y. Okada, T. Uemura, J. Tsurumi, R. Hausermann, H. Matsui, T. Fukami, H. Ishii, N. Kobayashi, K. Hirose and J. Takeya
  • Journal Title: NPG Asia Materials Volume: 8 Issue: 3 Pages: 252-252
  • DOI: 10.1038/am.2016.30
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Device performance and density of trap states of organic and inorganic field-effect transistors (2016)
  • Author(s): R. Haeusermann, K. Willa, B. Bluelle, T. Morf, A. Facchetti, Z. Chen, J. Lee, and B. Batlogg
  • Journal Title: Organic Electronics Volume: 28 Pages: 306-313
  • DOI: 10.1016/j.orgel.2015.11.011
  • Int'l Joint Research
• [Journal Article] Charge transport perpendicular to the high mobility plane in organic crystals : Bandlike temperature dependence maintained despite hundredfold anisotropy (2016)
  • Author(s): B. Bluelle, A. Troisi, R. Haeusermann, and B. Batlogg
  • Journal Title: Applied Physics Letters Volume: 93 Issue: 3 Pages: 035205-035205
  • DOI: 10.1103/physrevb.93.035205
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Thin Films of Highly Planar Semiconductor Polymers Exhibiting Band-like Transport at Room Temperature (2015)
  • Author(s): J. Lee, J. W. Chung, D. H. Kim, B.-L. Lee, J.-I. Park, S. Lee, R. Haeusermann, B. Batlogg, S.-S. Lee, I. Choi, I. W. Kim, and M. S. Kang
  • Journal Title: Journal of the American Chemical Society Volume: 137 Issue: 25 Pages: 7990-7993
  • DOI: 10.1021/jacs.5b04253
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] All Solution-Processed Organic Single-Crystal Transistors with High Mobility and Low-Voltage Operation (2015)
  • Author(s): S. Sakai, J. Soeda, R. Haeusermann, H. Matsui, C. Mitsui, T. Okamoto, M. Ito, et al.
  • Journal Title: Organic Electronics Volume: 22 Pages: 1-4
  • DOI: 10.1016/j.orgel.2015.03.015
  • Peer Reviewed
• [Journal Article] High Mobility and Low Density of Trap States in Dual-Solid-Gated PbS Nanocrystal field-effect Transistors (2015)
  • Author(s): Mohamad Insan Nugraha, Roger Haeusermann, Satria Zulkarnaen Bisri, Hiroyuki Matsui, Mikhailo Sytnyk, Wolfgang Heiss, Jun Takeya, Maria Antonietta Loi
  • Journal Title: Advanced Materials Volume: 27 Issue: 12 Pages: 2107-2012
  • DOI: 10.1002/adma.201404495
  • Peer Reviewed
• [Presentation] Dynamic disorder and device performance in soft organic semiconductors (2015)
  • Author(s): Haeusermann Roger
  • Organizer: IUMRS-ICAM (International Conference on Advanced Materials)
  • Place of Presentation: ICC, Jeju, South Korea
  • Year and Date: 2015-10-26
  • Int'l Joint Research / Invited
• [Presentation] Large mobility increase in strained organic crystals due to the suppression of thermal fluctuations (2015)
  • Author(s): Haeusermann Roger
  • Organizer: EMC (Electronic Materials Conference)
  • Place of Presentation: Ohio State University, Columbus OH, USA
  • Year and Date: 2015-06-25
  • Int'l Joint Research
• [Presentation] Origin of the Gate Voltage Dependence of the Contact Resistance in Organic FETs (2015)
  • Author(s): Haeusermann Roger
  • Organizer: MBE (Molecular Electronics and Bioelectronics Conference)
  • Place of Presentation: Tower Hall Funabori, Tokyo, Japan
  • Year and Date: 2015-06-23
• [Presentation] Estimating the Density of Trap States in the Middle of the Bandgap using Ambipolar OFETs (2014)
  • Author(s): Roger Haeusermann
  • Organizer: FET2014 (workshop on field-effect transistors and functional interfaces)
  • Place of Presentation: 三井ガーデンホテル柏の葉（千葉県柏市）
  • Year and Date: 2014-10-17 – 2014-10-21
• [Presentation] Estimating the Density of Trap States in Ambipolar Organic Field-Effect Transistors“, October 2014 (2014)
  • Author(s): Roger Haeusermann
  • Organizer: EET (workshop on Exotic Electronic Transport)
  • Place of Presentation: ホテル三日月（千葉県木更津市）
  • Year and Date: 2014-10-16 – 2014-10-17
• [Presentation] The Density of Trap States in the Middle of the Bandgap estimated (2014)
  • Author(s): Roger Haeusermann
  • Organizer: SSDM (Solid State Devices and Materials)
  • Place of Presentation: つくば国際会議場（茨城県つくば市）
  • Year and Date: 2014-09-08 – 2014-09-11