Published Papers

  • Chemical potential shift in organic field-effect transistors identified by soft X-ray operando nano-spectroscopy
    Naoka Nagamura, Yuta Kitada, Junto Tsurumi, Hiroyuki Matsui, Koji Horiba, Itaru Honma, Jun Takeya and Masaharu Oshima
    Appl. Phys. Lett. 106, 251604
    DOI:10.1063/1.4922902
  • Single-Crystal Organic Field-Effect Transistors of Naphthodifurans
    Chikahiko Mitsui, Junshi Soeda, Kazumoto Miwa, Kazutaka Shoyama, Yoshinori Ota, Hayato Tsuji, Jun Takeya, and Eiichi Nakamura
    Bull. Chem. Soc. Jpn. 88 776–783
    DOI:10.1246/bcsj.20150033
  • High Mobility and Low Density of Trap States in Dual-Solid-Gated PbS Nanocrystal Field-Effect Transistors
    M. I. Nugraha, R. Häusermann, S. Z. Bisri, H. Matsui, M. Sytnyk, W. Heiss, J. Takeya, and M. A. Loi
    Adv. Mater., 27, 2107-2015
    DOI: 10.1002/adma.201404495
  • All solution-processed organic single-crystal transistors with high mobility and low-voltage operation
    S. Sakai, J. Soeda, R. Häusermann, H. Matsui, C. Mitsui, T. Okamoto, M. Ito, K. Hirose, T. Sekiguchi, T. Abe, M. Uno, and J. Takeya
    Organic Electronics 22 1-4
    DOI:10.1016/j.orgel.2015.03.015

International Conference

Invited

  • Solution Processable High Performance Organic Semiconductors Based on Chalcogen-bridged Bent-Shaped π-Conjugated Cores
    Toshihiro Okamoto
    Collaborative Conference on 3D and Materials Research (CC3DMR) 2015
    Busan, South Korea　2015 6/15-19 
  • Sulfur-bridged Bent-shaped Organic Semiconductors for Printed and Flexible Electronics
    Toshihiro Okamoto, Chikahiko Mitsui, and Jun Takeya
    8th International Conference on Molecular Electronics and Bioelectronics (M&BE8)
    Funabori, Japan, 2015 6/6
  • Next-generation Organic Semiconducting Materials for Printed and Flexible Electronics
    Toshihiro Okamoto
    4th International Mini-Symposium on Coordination Chemistry for Advanced Materials
    Aoyama Gakuin University, Kanagawa  2015 4/10

Oral

  • Wireless serial data transmission by solution-processed single-crystalline
    organic transistors
    Hiroyuki Matsui, Akifumi Yamamura,Mayumi Uno, Junshi Soeda, Shinji Kishimura,Shunki Sakai, Hideyuki Tanaka, Yusuke Kanaoka,Bu-Sung Cha, Nobuaki Isahaya1,Kengo Nakayama, Shingo Yagyu, Chikahiko Mitsui, Toshihiro Okamoto, Jun Takeya
    8th International Conference on Molecular Electronics and Bioelectronics (M&BE8)
    Funabori, Japan, 2015 6/6
  • Chalcogen-bridged V-Shaped Organic Semiconducting Materials: Effect of the Bridged 　Chalcogen Atoms and the Substituents
    Toshihiro Okamoto, Chikahiko Mitsui, Masakazu Yamagishi, Katsumasa Nakahara, Junshi Soeda, Yuri Hirose, Hiroyasu Sato, Akihito Yamano, Takafumi Uemura, and Jun Takeya
    European Material Research Society 2015 Spring Meeting (EMRS)
    Lille France 2015 5/11-15
  • Transition between Band and Hopping Transport in Polymer Field-Effect Transistors
    Y. Yamashita, J. Tsurumi, F. Hinkel, Y. Okada, J. Soeda, W. Zajaczkowski, M. Baumgarten, W. Pisula, H. Matsui, K. Müllen, and J. Takeya
    European Material Research Society 2015 Spring Meeting (EMRS)
    Lille France 2015 5/11-15
  • Next-generation Bent-shaped pi-Cores for Organic Electronics
    Toshihiro Okamoto
    EMN East Meeting 2015
    Beijing, China 2015 4/20-23,

Poster

  • Hall Effect and High Mobility in Highly Aligned Polymer Semiconductors
    Y. Yamashita, J. Tsurumi, Y. Okada, J. Soeda,I. Osaka, K. Takimiya, H. Matsui ,and J. Takeya
    8th International Conference on Molecular Electronics and Bioelectronics (M&BE8)
    Funabori, Japan, 2015 6/6
  • Zigzag N-shaped pi-conjugated molecules with high carrier mobility and thermally stable crystal phase for the application to solution processable organic field-effect transistor
    Chikahiko Mitsui, Toshihiro Okamoto, Masakazu Yamagishi, Junto Tsurumi, Kazumi Yoshimoto, Katsumasa Nakahara, Junshi Soeda, Yuri Hirose, Hiroyasu Sato, Akihito Yamano,  Takafumi Uemura, and Jun Takeya
    European Material Research Society 2015 Spring Meeting (EMRS)
    Lille France 2015 5/11-15