Published Papers

  • Machine Learning Approaches for Determining Molecular Packing of Organic Semiconductors: Toward Accurate Crystal Structure Prediction
    T. Seki ,Y. Shinozaki ,R. Ito ,S. Sato, J. Takeya ,T. Okamoto, and G. Watanabe
    Comput. Theor. Chem. 11 November 2024, Version 2
    10.26434/chemrxiv-2024-pvk9d-v2
    （※As co-author）
  • Phenyl- versus cyclohexyl-terminated substituents: comparative study on aggregated structures and electron-transport properties in n-type organic semiconductors
    S. Kumagai, T. Koguma, Y. Arai, G. Watanabe, H. Ishii, J. Takeya, and T. Okamoto
    Mol. Syst. Des. Eng. 2025, 10, 32-39
    https://doi.org/10.1039/D4ME00110A
  • Low Band Gap Furan-Flanked Diketopyrrolopyrrole-Naphthobisthiadiazole Based Conjugated Polymer/Stretchable Blend for Organic Field Effect Transistors
    K. Kranthiraja, V. Sethumadhavan, S. Kumagai, Y. Xu, A. Erhardt, C. R. McNeill, S. Manzhos, J. Takeya, and P. Sonar
    Adv. Electron. Mater. 2024, 2400614
    DOI: 10.1002/aelm.202400614
    （※As co-author）
  • The efficient method for searching stable structures in herringbone-phase organic semiconductors using density functional theory
    S. Hakata, H. Ishii, H. Takaki, T. Okamoto, J. Takeya, and N. Kobayashi
    Appl. Phys. Express 17, 101001
    DOI 10.35848/1882-0786/ad7f21
    （※As co-author）
  • Ion sensors based on organic semiconductors acting as quasi-reference electrodes
    Y.Yamashita, H. Hayakawa, P. Wang, T. Makita, S. Kumagai, S. Watanabe, and J. Takeya
    PNAS 121 (40) e2405933121
    https://doi.org/10.1073/pnas.2405933121
  • Fluorescence Detection of Tetraphenylporphyrin Isolated on the Au(111) Electrode Enabled by Tripodal Molecules
    Y. Kobayashi, Y. Yokota, Y. Shoji, S. Sajisha, C. J. Martin, J. Takeya, T. Fukushima, and Y. Kim
    J. Phys. Chem. C 2024, 128, 36, 15082–15090
    10.1021/acs.jpcc.4c04400
    （※As co-author）
  • Chemical doping of a semicrystalline polymeric semiconductor realizing high stability and work function
    Z. Xiao, M. Ishii, J. Takeya, K. Ariga, and Y. Yamashita
    J. Mater. Chem. C 2024, 12, 12739-12746
    DOI: 10.1039/D4TC01406E
    (※As co-author）
  • N-type molecular doping of a semicrystalline conjugated polymer through cation exchange
    Y. Yamashita, S. Kohno, E. Longhi, S. Jhulki, S. Kumagai, S. Barlow, S. R. Marder, J. Takeya, and S. Watanabe
    Commun. Mater. volume 5, Article number: 79 (2024)
    https://doi.org/10.1038/s43246-024-00507-2
  • Band transport evidence in PEDOT:PSS films using broadband optical spectroscopy from terahertz to ultraviolet region
    Z. Guo, T. Sato, Y. Han, N. Takamura, R. Ikeda, T. Miyamoto, N. Kida, M. Ogino, Y. Takahashi, N. Kasuya, S. Watanabe, J. Takeya, Q. Wei, M. Mukaida, and H. Okamoto
    Commun. Mater. 5, Article number: 26 (2024)
    doi.org/10.1038/s43246-024-00451-1
    （※As co-author）
  • All-Carbon-Based Complementary Integrated Circuits
    K. Watanabe, N. Miura, H. Taguchi, T. Komatsu, A. Aratake, T. Makita, M. Tanabe, T. Wakimoto, S. Kumagai, T. Okamoto, S. Watanabe and J. Takeya
    Adv. Mater. Technol. 2024, 9, 2301673
    doi/10.1002/admt.20230167

International Conference

Invited

  • Charge separation at donor:acceptor interface with small energy offset
    Y.Tamai
    12th Singapore International Chemistry Conference
    Changi,Singapore,Dec,12,2024
  • Electronic coherence and correlation in organic two-dimensional hole-gas systems
    J.Takeya
    ICSM 2024
    Dresden,Germany,June,27,2024
  • Role of the Energy Offset in the Charge Separation at the Donor: Acceptor Interface
    Yasu.Tamai
    245th ECS Meeting
    San Francisco,USA,May,26,2024
  • High-Speed Organic Integrated Circuits and Applications
    J.Takeya
    2024 MRS Spring Meeting & Exhibit
    Seattle, Washington, USA, April,25,2024

Oral

  • Hall Mobility exceeding 100 cm2/Vs in strained organic semiconductors
    T. Furukawa, N. Kasuya, H. Takayanagi, S. Watanabe, J. Takeya
    ICSM 2024
    Dresden,Germany,June,25,2024
  • Triplet sensitization via charge recombination at donor:acceptor interface for efficient solid-state photon upconversion
    Y.Tamai, Y. Sakamoto, S. Izawa, H. Ohkita, M. Hiramoto
    ICSM 2024
    Dresden,Germany,June,25,2024
  • Polymeric Schottky diode with i-n homojunction
    T.Kaneta, N.Osakabe, Y. Yamashita, S. Watanabe, J. Takeya
    ICSM 2024
    Dresden,Germany,June,24,2024
  • Development of Strain-Induced Organic Single-Crystalline Transistors
    M.Abe, T.Sawada, Y.Yamashita, N.Kasuya, S.Watanabe, J.Takeya
    2024 MRS Spring Meeting & Exhibit
    Seattle, Washington, USA, April,23,2024

Poster

  • Development of strained organic single-crystal transistors
    M. Abe, Y. Yamashita, T. Sawada, N. Kasuya, S. Watanabe, J. Takeya
    ICSM 2024
    Dresden,Germany,June,27,2024
  • All-Carbon-Based Complementary Integrated Circuits for Disposable Electronics
    K. Watanabe, N. Miura, H. Taguchi, T. Komatsu, A. Aratake, T. Makita, M. Tanabe, T. Wakimoto, S. Kumagai, T. Okamoto, S. Watanabe, J. Takeya
    ICSM 2024
    Dresden,Germany,June,25,2024
  • GHz polymeric Schottoky diode with high rectification efficiency
    N. Osakabe, Y. Yamashita, A. Tajima, S. Barlow, S. R. Marder, S. Watanabe, J. Takeya
    ICSM 2024
    Dresden,Germany,June,25,2024