Personal History

Tatsuo Hasegawa

Professor, Univ. Tokyo

Principal Research Manager, FLEC-AIST

Curriculum Vitae

  1. Professor, 2014.1-present, Department of Applied Physics, The University of Tokyo, and
    Principal Research Manager, 2014.1-present, Flexible Electronics Research Center (FLEC), AIST
  2. Deputy Director, 2011.4-present, Flexible Electronics Research Center (FLEC) , AIST
  3. Group Leader, 2008.4-2011.3, Correlated Materials Photoelectronics Group, Photonics Research Institute (PRI), AIST
  4. Team Leader (2004.4-2008.3) & Senior Research Scientist (2003.3-2008.3), Correlated Electron Research Center (CERC), AIST, Japan
  5. Visiting Researcher, 2001.11-2002.8, Solid State Physics Laboratory, ETH Zurich, Switzerland
  6. Associate Professor, 1997.9-2003.2, Research Institute for Electronic Science, Hokkaido University, Japan
  7. Research Associate, 1992.1-1997.2, The University of Tokyo, Japan
  8. Ph. D., 1988.4-1991.12, Department of Applied Physics, The University of Tokyo, Japan

Research Area

Condensed Matter Physics & Organic Electronics

Research Achievements

  • Nonlinear Optical Spectroscopy on One-Dimensional Excitons in Conjugated Polymers (Publication 1-6)
  • Development, Superconductivity, and Electronic Phase Transistions in New Donor-Acceptor Type Compounds (Publication 7-14,16,17,27)
  • Research on Organic Electronics Using Correlated Electron Materials (Publication 11,15,18-26,28,29)


  1. S. Arai, S. Inoue, T. Hamai, R. Kumai, and T. Hasegawa, "Semiconductive Single Molecular Bilayers Realized Using Geometrical Frustration",Adv. Mater. 2018, 1707256:1-7(2018).
  2. S. Matsuoka, J. Tsutsumi, T. Kamata, and T. Hasegawa, "Microscopic gate-modulation imaging of charge and field distribution in polycrystalline organic transistors",J. Appl. Phys. 123, 135301(2018).
  3. S. Matsuoka, J.Tsutsumi, H.Matsui, T. Kamata, and T.Hasegawa, "Nanosecond time-resolved microscopic gate-modulation imaging of polycrystalline organic thin-film transistors",Phys. Rev. Applied. 9, 024025(2018).
  4. J.Tsutsumi, S.Matsuoka, T.Kamata, T.Hasegawa, "Fast optical inspection of operations of large-area active-matrix backplane by gate modulation imaging",Org. Electron. 55, 187-193 (2018).
  5. M.Yoneya , H.Minemawari , T.Yamada, and T.Hasegawa, "Interface-Mediated Self-Assembly in Inkjet Printing of Single-Crystal Organic Semiconductor Films", J. Phys. Chem. C, 121 , (16), 8796–8803 (2017).
  6. 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).
  7. 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).
  8. 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).
  9. 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).
  10. 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).
  11. 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).
  12. Y. Noda, H. Minemawari, H. Matsui, T. Yamada, S. Arai, T. Kajiya, M. Doi, andT. Hasegawa, "Underlying Mechanism of Inkjet Printing of Uniform Organic Semiconductor Films Through Antisolvent Crystallization",Adv. Funct. Mater. Volume 25, Issue 26, pages 4022–4031, (2015).
  13. Satoru Inoue, Hiromi Minemawari, Jun’ya Tsutsumi, Masayuki Chikamatsu,Toshikazu Yamada, Sachio Horiuchi, Mutsuo Tanaka, Reiji Kumai, Makoto Yoneya, and Tatsuo Hasegawa, "Effects of Substituted Alkyl Chain Length on Solution-Processable Layered Organic Semiconductor Crystals", Chem. Mater. 27(11), 3809-3812 (2015).
  14. 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).
  15. 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).
  16. 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).
  17. 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).
  18. 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).
  19. H. Minemawari, T. Yamada and T. Hasegawa,"Crystalline film growth of TIPS-pentacene by double-shot inkjet printing technique",Jpn. J. Appl. Phys., 53, 05HC10 (2014).
  20. 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).
  21. 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).
  22. Hiroyuki Matsui , Yuki Noda , and Tatsuo Hasegawa , "Hybrid Energy-Minimization Simulation of Equilibrium Droplet Shapes on Hydrophilic/Hydrophobic Patterned Surfaces ",Langmuir, 28 (44), pp 15450-15453,(2012).
  23. 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).
  24. H. Matsui, D. Kumaki, E. Takahashi, K. Takimiya, S. Tokito, and T. Hasegawa , "Correlation between interdomain carrier hopping and apparent mobility in polycrystalline organic transistors as investigated by electron spin resonance ", Phys. Rev. B 85.035308 (2012).
  25. 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).
  26. T. Hasegawa, M. Hiraoka, T. Yamada, "Double-shot inkjet printing of donor-acceptor-type organic charge-transfer complexes: Wet/nonwet definition and its use for contact engineering ", Thin Sol. Films 518, 14, 3988 (2010).
  27. H. Matsui, A. S. Mishchenko, and T. Hasegawa, "Distribution of Localized States from Fine Analysis of Electron Spin Resonance Spectra in Organic Transistors", Phys. Rev. Lett. 104, 056602 (2010).
  28. T.Hasegawa and J.Takeya, "Organic field-effect transistors using single crystals", Sci. Technol. Adv. Mater. 10, 024314 (2009).
  29. T.Yamada, T.Hasegawa, M. Hiraoka, H. Matsui, Y.Tokura, and G.Saito, "Control of film morphology and its effects on subthreshold characteristics in dibenzotetrathiafulvalene organic thin-film transistors", Appl. Phys. Lett. 92, 233306 (2008).
  30. H. Matsui, T. Hasegawa, Y. Tokura, M. Hiraoka, and T. Yamada, "Polaron motional narrowing of electron spin resonance in organic transistors", Phys. Rev. Lett. 100, 126601 (2008).
  31. H. Okamoto, H. Matsuzaki, T. Wakabayashi, Y. Takahashi, and T. Hasegawa, "Photoinduced metallic state originating from spin-charge separation in a one-dimensional organic Mott insulator", Phys. Rev. Lett. 98, 037401 (2007).
  32. K. Yonemitsu, N. Maeshima, and T. Hasegawa,"Suppression of rectification at metal-Mott insulator interfaces", Phys. Rev. B 76, 235118 (2007).
  33. M. Hiraoka, T. Hasegawa, T. Yamada, Y. Takahashi, S. Horiuchi, and Y. Tokura, "On-substrate synthesis of molecular conductor films and circuits", Adv. Mater. 19, 3248 (2007).
  34. Y. Takahashi, T. Hasegawa, S. Horiuchi, R. Kumai, Y. Tokura, and G. Saito, "High mobility organic field-effect transistor based on hexamethylenetetrathiafulvalene with organic metal electrodes", Chem. Mater. 19, 6382 (2007).
  35. S. Horiuchi, T. Hasegawa, and Y. Tokura, "Molecular donor-acceptor compounds as prospective organic electronics materials", J. Phys. Soc. Jpn. 75, 051016 (2006).
  36. K. Sakai, T. Hasegawa, M. Ichikawa, and Y. Taniguchi, "Field-effect characteristics of a one-dimensional platinum chain compound, bis(1,2-benzoquinonedioximato)platinum(II)", Chem. Lett. 35, 302 (2006).
  37. M. Hiraoka, T. Hasegawa, Y. Abe, T. Yamada, Y.Tokura, H. Yamochi, G. Saito, T. Akutagawa, and T. Nakamura, "Inkjet printing of organic metal electrodes using charge-transfer compounds", Appl. Phys. Lett. 89, 173504 (2006).
  38. Y. Takahashi, T. Hasegawa, Y. Abe, Y. Tokura, and G. Saito, "Organic metal electrodes for controlled p- and n-type carrier injections in organic field-effect transistors", Appl. Phys. Lett. 88, 073504 (2006).
  39. Y. Abe, T. Hasegawa, Y. Takahashi, T. Yamada, and Y. Tokura, "Control of threshold voltage in pentacene thin-film transistors using carrier doping at the charge-transfer interface with organic acceptors", Appl. Phys. Lett. 87, 153506 (2005).
  40. Y. Takahashi, T. Hasegawa, Y. Abe, Y. Tokura, K. Nishimura, and G. Saito, "Tuning of electron injections for n-type organic transistor based on charge-transfer compounds", Appl. Phys. Lett. 86, 063504 (2005).
  41. T. Hasegawa, R. Kumai, Y. Takahashi, Y. Tokura, and H. Sawa, "Clamp-type pressure cell for full structure determination of molecular single crystals up to 1.5 GPa", Rev. Sci. Instrum. 76, 073903 (2005).
  42. H. Sakamoto, K. Mizoguchi, and T. Hasegawa, "Magnetic properties of (BEDT-TTF)(ClMeTCNQ) studied by ESR under pressure: a neutral-ionic crossover and thermoinduced mesophase", Phys. Rev. Lett. 93, 186401 (2004).
  43. T. Hasegawa, K. Mattenberger, J. Takeya, and B. Batlogg, "Ambipolar field-effect carrier injections in organic Mott insulators", Phys. Rev. B 69, 245115 (2004).
  44. T. Sato, T. Hasegawa, T. Akutagawa, T. Nakamura, and R. Kondo, "2kF transitions in a series of (DMET)2(X1X2TCNQ) [X1, X2 = Br, Cl, F, CH3, H]; subsidiary lattice effect by the anion radicals", Phys. Rev. B 69, 075103 (2004).
  45. T. Hasegawa, T. Akutagawa, T. Nakamura, "Novel magneto-lattice transition in the mixed-stack charge-transfer complexes with intercolumnar networks", Synth. Met. 133-134, 623 (2003).
  46. R.Kondo, T.Hasegawa, S.Kagoshima, T.Mochida, Y.Iwasa, K.Hiraki, and T.Takahashi, "Superconductivity and metal-insulator transition in twin-columnar organic superconductor, (BETS)2(X2TCNQ) [X=Cl, Br]", J. Phys. Soc. Jpn. 70, 3023 (2001).
  47. T.Hasegawa, T.Akutagawa, T.Nakamura, T.Mochida, R.Kondo, S.Kagoshima, and Y.Iwasa, "Neutral-ionic phase transition of (BEDT-TTF)(ClMeTCNQ) under pressure", Phys. Rev. B 64, 85106 (2001).
  48. T.Hasegawa, T.Mochida, R.Kondo, S.Kagoshima, Y.Iwasa, T.Akutagawa, T.Nakamura, and G.Saito, "Mixed-stack charge-transfer complexes with intercolumnar networks", Phys. Rev. B 62, 10059 (2000).
  49. R.Kondo, T.Hasegawa, T.Mochida, S.Kagoshima, and Y.Iwasa, "Donor-acceptor type superconductor, (BETS)2(Cl2TCNQ)", Chem. Lett. 1999, 333 (1999).
  50. T.Hasegawa, K.Inukai, S.Kagoshima, T.Sugawara, T.Mochida, S.Sugiura, and Y.Iwasa, "(BEDT-TTF)(F1TCNQ) and (BEDT-TTF)(F2TCNQ)x(TCNQ)1-x (x ca.0.5): all-organic metals down to 2K", Chem. Commun. 1997, 1377 (1997).
  51. T.Hasegawa, S.Kagoshima, T.Mochida, S.Sugiura, and Y.Iwasa, "Electronic states and anti-ferromagnetic order in mixed-stack charge-transfer compound (BEDT-TTF)(F2TCNQ)", Solid State Commun. 103, 489 (1997).
  52. T.Hasegawa, Y.Iwasa, T.Koda, H.Kishida, Y.Tokura, S.Wada, H.Tashiro, H.Tachibana, and M.Matsumoto, "Nature of one-dimensional excitons in polysilanes", Phys. Rev. B 54, 11365 (1996).
  53. T.Hasegawa, Y.Iwasa, T.Koda, H.Kishida, Y.Tokura, S.Wada, H.Tashiro, H.Tachibana, and M.Matsumoto, "Nature of one-dimensional excitons in polysilanes", Phys. Rev. B 54, 11365 (1996).
  54. H.Kishida, T.Hasegawa, Y.Iwasa, T.Koda, Y.Tokura, H,Tachibana, M.Matsumoto, S.Wada, T.T.Lay, and H.Tashiro, "Electric-field-induced second-harmonic generation mediated by one-dimensional excitons in polysilanes", Phys. Rev. B 50, 7786 (1995).
  55. T.Hasegawa, Y.Iwasa, T.Koda, H.Kishida, Y.Tokura, S.Wada, H.Tashiro, H.Tachibana, M.Matsumoto, and R.D.Miller, "Nonlinear optical study of polysilanes", in Light Emission from Novel Silicon Materials, J. Phys. Soc. Jpn. 63, 64 (1994).
  56. T.Hasegawa, Y.Iwasa, H.Sunamura, T.Koda, Y.Tokura, H.Tachibana, M.Matsumoto, and S.Abe, "Nonlinear optical spectroscopy on one-dimensional excitons in silicon polymer, polysilane", Phys. Rev. Lett. 69, 668 (1992).
  57. T.Hasegawa, Y.Iwasa, H.Kishida, T.Koda, Y.Tokura, H.Tachibana, and Y.Kawabata, "Two-photon resonant third-harmonic generation in polysilanes", Phys. Rev. B 45, 6317 (1992).
  58. T.Hasegawa, K.Ishikawa, T.Kanetake, T.Koda, K.Takeda, H.Kobayashi, and K.Kubodera, "Excitonic resonant effect in the third-order nonlinear optical properties of blue and red-formpolydiacetylene films", Chem. Phys. Lett. 171, 239 (1990).