Personal History


Senior Researcher

Curriculum Vitae

  1. Senior Researcher, 2016.10 – present, Flexible Materials Base Team, Flexible Electronics Research Center (FLEC), National Institute of Advanced Industrial Science and Technology (AIST)
  2. Researcher, 2015.04 – present, Flexible Materials Base Team, Flexible Electronics Research Center (FLEC), National Institute of Advanced Industrial Science and Technology (AIST)
  3. Researcher, 2011.04 - 2015.03, Flexible Electronics Research Center (FLEC), AIST
  4. Researcher, 2010.10-2011.3, Photonics Research Institute, AIST
  5. AIST Postdoctoral Research Associate, 2009.4-2010.9, Correlated Materials Photoelectronics Group, Photonics Research Institute (PRI), AIST
  6. Postdoctoral Research Associate, 2009.1-2009.3, Institute for Chemical Research, Kyoto University
  7. Ph. D., 2009.1, Department of Chemistry, Graduate School of Science, Kyoto University

Research Area

Organic solid state physics, Organic electronics

Research Achievements

  • Observation of frontier electronic states in organic semiconductors using the ultraviolet photoemission and inverse photoemission spectroscopy.
  • Examination of spotaneous polarization and its photo-response in organic molecular thin films.
  • Development of a new method to calculate static permittivity tensors of organic molecular crystals.
  • Development of photovoltaics utilizing charge-transfer exciton.
  • Development of air-stable N-type organic semiconductors by intermolecular charge-transfer interaction.
  • Development of imaging techniqe of distributed mobility and dead pixels for large-area thin-film transistor arrays.


  1. Y. Shibata, J. Tsutsumi, S. Matsuoka, H. Minemawari, S. Arai, R. Kumai,and T. Hasegawa, "Unidirectionally Crystallized Stable n-type Organic Thin-Film Transistors Based on Solution-Processable Donor-Acceptor Compounds", Adv. Electron. Mater. 1700097 (2017).
  2. J. Tsutsumi, S. Matsuoka, I. Osaka, R. Kumai, and T. Hasegawa, "Reduced exchange narrowing caused by gate-induced charge carriers in high-mobility donor-acceptor copolymers", Phys. Rev. B 95, 115306 (2017).
  3. H. Koike, J. Tsutsumi, S. Matsuoka, K. Sato, T. Hasegawa, and K. Kanai, "Electronic structure of stable n-type semiconducting molecular complex(diC8-BTBT)(TCNQ) studied by ultraviolet photoemission and inverse photoemission spectroscopy",Org. Electron.39,184.(2016).
  4. Katelyn P. Goetz, Jun’ya Tsutsumi, Sujitra Pookpanratana, Jihua Chen, Nathan S. Corbin, Rakesh K. Behera, Veaceslav Coropceanu, Curt A. Richter, Christina A. Hacker, Tatsuo Hasegawa, and Oana D. Jurchescu, "Polymorphism in the 1:1 charge-transfer complex DBTTF-TCNQ and its effects on optical and electronic properties",Adv. Electron. Mater. 2.1600203.(2016).
  5. Toshikazu Yamada, Katsuo Fukuhara, Ken Matsuoka, Hiromi Minemawari, Jun’ya Tsutsumi, Nobuko Fukuda, Keisuke Aoshima, Shunto Arai, Yuichi Makita, Hitoshi Kubo, Takao Enomoto, Takanari Togashi, Masato Kurihara, and Tatsuo Hasegawa, "Nanoparticle chemisorption printing technique for conductive silver patterning with submicron resolution", Nature Commun. 7, 11402-1-9 (2016).
  6. H.Koike, M.Chikamatsu, R.Azumi , J.Tsutsumi , K.Ogawa , W.Yamane , T.Nishiuchi , T.Kubo , T.Hasegawa , and K.Kanai,"Stable Delocalized Singlet Biradical Hydrocarbon for Organic Field-Effect Transistors",Adv. Funct. Mater, 26, 277 (2016).
  7. Hiroyuki Yoshida, Kazuto Yamada, Jun'ya Tsutsumi, and Naoki Sato,"Complete description of ionization energy and electron affinity in organic solids: Determining contributions from electronic polarization,energy band dispersion, and molecular orientation",Phys. Rev. B 92, 075145(2015) .
  8. J. Tsutsumi, S. Matsuoka, T. Yamada, and T. Hasegawa, "Gate-modulation imaging of organic thin-film transistor arrays:Visualization of distributed mobility and dead pixels", Org. Electron. 25, 289-294 (2015).
  9. S.Inoue, H.Minemawari, J.Tsutsumi, M.Chikamatsu,T.Yamada, S.Horiuchi, M.Tanaka, R.Kumai, M.Yoneya, and T.Hasegawa, "Effects of Substituted Alkyl Chain Length on Solution-Processable Layered Organic Semiconductor Crystals", Chem. Mater. 27(11), 3809-3812 (2015).
  10. Y. Shibata, J. Tsutsumi, S. Matsuoka, K. Matsubara, Y. Yoshida, M.Chikamatsu and T. Hasegawa,"Uniaxially oriented polycrystalline thin films and air-stable n-type transistors based on donor-acceptor semiconductor (diC8BTBT)(FnTCNQ) [n = 0, 2, 4]",Appl. Phys. Lett.106.143303 (2015).
  11. T. Takeda, J. Tsutsumi, T. Hasegawa, S. Noro, T. Nakamura and T.Akutagawa,"Electron-deficient acene-based liquid crystals:dialkoxydicyanopyrazinoquinoxalines",J. Mater. Chem. C 3 3016.(2015).
  12. J. Tsutsumi, S. Matsuoka, S. Inoue, H. Minemawari, T. Yamada and T.Hasegawa, "N-type field-effect transistors based on layered crystalline donor-acceptor semiconductors with dialkylated benzothienobenzothiophenes as electron donors", J. Mater. Chem. C 3, 1976 (2015).
  13. J. Tsutsumi, T. Yamada and T. Hasegawa, "Electroabsorption study of charge-transfer excited state in donor-acceptor-type polymer", Trans. Mat. Res. Soc. Japan 39, 217 (2014).
  14. J. Tsutsumi, H. Matsuzaki, N. Kanai, T. Yamada and T. Hasegawa,"Formation of relaxed charge-transfer excitons in donor-acceptor-type polymer solar cells", Jpn. J. Appl. Phys. 53, 05HB12 (2014).
  15. H. Minemawari, J. Tsutsumi, S. Inoue, T. Yamada, R. Kumai and T. Hasegawa,"Crystal structure of asymmetric organic semiconductor 7-decyl-2-phenyl[1]benzothieno[3,2-b][1]benzothiophene",Applied Physics Express 7 091601(2014).
  16. J. Tsutsumi, H. Matsuzaki, N. Kanai, T. Yamada, and T. Hasegawa, "Charge separation of charge-transfer excitons in donor-acceptor polymer solar cells",J. Phys. Chem. C 117, 16769 (2013).
  17. K. Shibuya, J. Tsutsumi, T. Hasegawa and A. Sawa, "Fabrication and Raman scattering study of epitaxial VO2 films on MgF2 (001) substrates",Appl. Phys. Lett. 103, 021604 (2013).
  18. J. Tsutsumi, H. Matsui, T. Yamada, R. Kumai, and T. Hasegawa, "Generation and Diffusion of Photocarriers in Molecular Donor-Acceptor Systems: Dependence on Charge-Transfer Gap Energy",J. Phys. Chem. C 116, 23957-23964 (2012).
  19. M. Ikawa, T. Yamada, H. Matsui, H. Minemawari, J. Tsutsumi, Y. Horii, M. Chikamatsu, R. Azumi, R. Kumai, and T. Hasegawa, "Simple push coating of polymer thin-film transistors",Nat. Commun. 3:1176 doi: 10.1038/ncomms2190 (2012).
  20. H. Minemawari, T. Yamada, H. Matsui, J. Tsutsumi, S. Haas, R. Chiba, R. Kumai & T. Hasegawa, "Inkjet printing of single-crystal films", Nature , 475, 364-367 ( 2011).
  21. J. Tsutsumi, H. Yoshida, R. Murdey and N. Sato, "Decay mechanism of spontaneously built-up surface potential in a thin film of a zwitterionic molecule giving non-centrosymmetric crystal structure", J. Phys. Chem. C, 115, 2356(2011).
  22. J. Tsutsumi, T. Yamada, H. Matsui, S. Haas, and T. Hasegawa, "Competition between Charge-Transfer Exciton Dissociation and Direct Photocarrier Generation in Molecular Donor-Acceptor Compounds", Phys. Rev. Lett. 105, 226601 (2010)
  23. K. Kanai, H. Yoshida, Y. Noda, A. Iwasaki, R. Suizu, J. Tsutsumi, H. Imabayashi, Y. Ouchi, N. Sato, K. Seki and K. Awaga, "Electronic structure of disjoint diradical 4,4’-bis(1,2,3,5-dithiadiazolyl) thin films", Phys. Chem. Chem. Phys. 11, 11432.(2009)
  24. J. Tsutsumi, H. Yoshida, R. Murdey and N. Sato, "Spontaneous buildup of surface potential with a thin film of a zwitterionic molecule giving noncentrosymmetric crystal structure", Appl. Phys. Lett. 95,182901 (2009) .
  25. J. Tsutsumi, H. Yoshida, R. Murdey, S. Kato and N. Sato, "An accurate calculation of electronic contribution to static permittivity tensor for organic molecular crystals on the basis of the charge response kernel theory", J. Phys. Chem. A 113 (2009) 9207.
  26. J. Tsutsumi, T. Sasamori, H. Yoshida, N. Tokitoh, N. Sato, S. Kato,"A noncentrosymmetric crystal structure of a zwitterionic compound, pyridinium 5,7-dihydro-5,7-dioxo-6H-cyclopenta[b]pyridin-6-ylide, realized by weak hydrogen bonds",J. Mol. Struct. 920 (2009) 52.
  27. J. Tsutsumi, D. Yamamoto, H. Yoshida and N. Sato,"Electronic structure of frontier states in an evaporated thin film of a highly amphoteric and polar molecule",Syn. Met. 158 (2008) 934.
  28. K. Akaike, K. Kanai, H. Yoshida, J. Tsutsumi, T. Nishi, N. Sato, Y. Ouchi and K. Seki, "Ultraviolet photoelectron spectroscopy and inverse photoemission spectroscopy of [6,6]-phenyl-C61-butyric acid methyl ester in gas and solid phases", J. Appl. Phys. 104 (2008) 023710.
  29. K, Iketaki, K. Kanai, W. Fujita, K. Awaga, J. Tsutsumi, H. Yoshida, N. Sato, M. Knupfer, Y. Ouchi and K. Seki,"Electronic structure of 1,3,5-trithia-2,4,6-triazapentalenyl on gold", Chem. Phys. Lett. 451 (2008) 58.