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

2015 Fiscal Year Annual Research Report

• Project/Area Number: 14F04777
• 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
• Project Period (FY): 2014-04-25 – 2016-03-31
• 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 Pages: 11156-11156
  • DOI: 10.1038/ncomms11156
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] The emergence of charge coherence in soft molecular organic semiconductors via the suppression of thermal fluctuations (2016)
  • Author(s): K. Sakai, Y. Okada, T. Uemura, J. Tsurumi, R. Haeusermann, H. Matsui, T. Fukami, H. Ishii, N. Kobayashi, K. Hirose, and J. Takeya
  • Journal Title: NPG Asia Materials Volume: 8 Pages: 252-252
  • DOI: 10.1038/am.2016.30
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [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 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 Pages: 7990-7993
  • DOI: 10.1021/jacs.5b04253
  • Peer Reviewed / Int'l Joint Research
• [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 – 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 – 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 – 2015-06-23