Faculty Information, Institute for Chemical Research, Kyoto University   [ English | Japanese ]


TAYAGAKI, Takeshi

Research Center for Elements Science - Photonic Elements Science -
Associate Professor
Doctor Science
URL:
E-mail: tayagaki@scl.kyoto-u.ac.jp
Tel:
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Academic career
    2004.1 Graduated from Dr. Course, Kyoto University
    2004.1 D. Sc., Kyoto University
    2004.2-2005.7 JST Researcher, The University of Tokyo
    2005.8-2007.2 Assistant Professor, The University of Tokyo
    2007.3- Assistant Professor, Kyoto University, Institute for Chemical Research
Research field
    Optical properties of solids, Laser spectroscopy
Current research
Selected publications
  1. T. Tayagaki, K. Ueda, S. Fukatsu, and Y. Kanemitsu, Recombination dynamics of high-density photocarriers in type-II Ge/Si quantum dots J. Phys. Soc. Jpn. (2012)
  2. N. Usami, W. Pan, T. Tayagaki, S. T. Chu, J. Li, T. Feng, and T. Kiguchi, Simultaneous Enhanced Photons Capture and Carriers Generation in Si Solar Cell using Ge Quantum Dots Photonic Nanocrystals Nanotechnology 23, 185401 (2012)
  3. T. Tayagaki, N. Usami, and Y. Kanemitsu, Influence of thermal annealing on the carrier extraction in Ge/Si quantum dot solar cells Jpn. J. Appl. Phys. (2012)
  4. K. Ueda, T. Tayagaki, S. Fukatsu, and Y. Kanemitsu , High-Density Carrier Dynamics in Ge/Si Quantum Dots studied by Time-resolved Photoluminescence Spectroscopy J. Non-Cryst. Solid (2012)
  5. T. Tayagaki, S. Fukatsu, and Y. Kanemitsu , Auger recombination in Si1-xGex/Si quantum wells under high-density photoexcitation Phys. Status Solidi C 8, 1049-1054 (2011)
  6. D. Hirano, T. Tayagaki, Y. Yamada, and Y. Kanemitsu, Ultrafast decay of photoluminescence from high-density excitons in AlxGa1−xN mixed crystals: Diffusive propagation of exciton-polaritons Phys. Rev. B 82, 113202/1-113202/4 (2010)
  7. S. Taguchi, A. Ueda, T. Tayagaki, K. Matsuda, and Y. Kanemitsu, Quantized Auger Recombination and Carrier Multiplication in Semiconductor Nanoparticles and Carbon Nanotubes Physica status solidi. C 7, 735-738 (2010)
  8. D. Hirano, T. Tayagaki, Y. Yamada and Y. Kanemitsu, Localization dynamics of biexcitons and electron-hole plasmas in GaN-based mixed crystals physica status solidi A 207, 33-36 (2010).
  9. T. Tayagaki, S. Fukatsu, and Y. Kanemitsu, Control of Auger recombination rate in Si1-xGex/Si heterostructures J. Phys. Soc. Jpn. 79, 013701/1-013701/4 (2010).
  10. S. Taguchi, T. Tayagaki, and Y. Kanemitsu, Luminescence and magnetic properties of Co doped ZnO nanocrystals IOP Conference Series: Materials Science and Engineering 6, 012029 (2009).
  11. Y. Yamada, H. Yasuda, T. Tayagaki, and Y. Kanemitsu, Photocarrier recombination dynamics in highly excited SrTiO3 studied by transient absorption and photoluminescence spectroscopy Appl. Phys. Lett. 95, 12112/1-12112/3 (2009).
  12. D. Hirano, T. Tayagaki, Y. Yamada and Y. Kanemitsu, Composition dependent dynamics of biexciton localization in AlxGa1-xN mixed crystals Phys. Rev. B 80, 075205/1-075205/4 (2009).
  13. A. Ueda, T. Tayagaki, and Y. Kanemitsu, Dynamics of quantized Auger recombination in CdSe nanocrystals studied by femtosecond intraband pump-probe spectroscopy J. Phys. Soc. Jpn. 78, 083706/1-083706/4 (2009).
  14. Y. Yamada, H. Yasuda, T. Tayagaki, and Y. Kanemitsu, Temperature Dependence of Photoluminescence Spectra of Nondoped and Electron-Doped SrTiO3: Crossover from Auger Recombination to Single-Carrier Trapping Phys. Rev. Lett. 102, 247401/1-247401/4 (2009).
  15. S. Taguchi, A. Ishizumi, T. Tayagaki, and Y. Kanemitsu, Mn-Mn couplings in Mn-doped CdS nanocrystals studied by magnetic circular dichroism spectroscopy Appl. Phys. Lett. 94, 173101/1-173101/3 (2009).
  16. T. Tayagaki, S. Fukatsu, and Y. Kanemitsu, Photoluminescence dynamics and reduced Auger recombination in Si1-xGex/Si superlattices under high-density photoexcitation Phys. Rev. B 79, 041301(R)/1-041301(R)/4 (2009).
  17. H. Yasuda, Y. Yamada, T. Tayagaki, and Y. Kanemitsu,, Spatial distribution of carriers in SrTiO3 revealed by photoluminescence dynamics measurements Phys. Rev. B 78, 233202/1- 233202/4 (2008).
  18. A. Ueda, K. Matsuda, T. Tayagaki, and Y. Kanemitsu , Carrier multiplication in carbon nanotubes studied by femtosecond pump-probe spectroscopy Appl. Phys. Lett. 92, 233105 (2008).
  19. D. Hirano, T. Tayagaki, Y. Yamada, and Y. Kanemitsu , Dynamics of biexciton localization in AlxGa1-xN mixed crystals under exciton resonant excitation Phys. Rev. B 77, 193203 (2008).
  20. K. Hosoki, T. Tayagaki, S. Yamamoto, K. Matsuda, and Y. Kanemitsu, Direct and stepwise energy transfer from excitons to plasmons in close-packed metal and semiconductor nanoparticle monolayer films Phys. Rev. Lett. 100, 207404 (2008).
  21. D. Hirano, T. Tayagaki, and Y. Kanemitsu, Disorder-induced rapid localization of electron-hole plasmas in highly excited InxGa1-xN mixed crystals Phys. Rev. B 77, 073201 (2008).
  22. A. Ueda, T. Tayagaki, and Y. Kanemitsu, Energy transfer from semiconductor nanocrystal monolayers to metal surfaces revealed by time-resolved photoluminescence spectroscopy Appl. Phys. Lett. 92, 133118 (2008).
  23. T. Tayagaki, A. Mysyrowicz, and M. Kuwata-Gonokami , Collisions between supercooled excitons in Cu2O studied by　time-resolved Lyman spectroscopy Phys. Rev. B 74, 245127 (2006)
  24. H. Oyanagi, T. Tayagaki, and K. Tanaka, Synchrotron radiation study of photo-induced spin-crossover transitions: microscopic origin of nonlinear phase transition J. Luminescence 119-120, 361 (2006)
  25. T. Tayagaki, A. Galet, G. Molnár, M. C. Muñoz, A. Zwick, K. Tanaka, J.-A. Real, and A. Bousseksou , Metal dilution effects on the spin-crossover properties of the three-dimensional coordination polymer Fe(pyrazine)[Pt(CN)4] J. Phys. Chem. B 109, 14859 (2005).
  26. T. Tayagaki, A. Mysyrowicz, and M. Kuwata-Gonokami , The yellow excitonic series of Cu2O revisited by Lyman spectroscopy J. Phys. Soc. Jpn. 74, 1423 (2005).
  27. H. Okamura, M. Matsubara, T. Nanba, T. Tayagaki, S. Mouri, K. Tanaka, Y. Ikemoto, T. Moriwaki, H. Kimura, and G. Juhász, Photoinduced spin crossover in a Fe-picolylamine complex: a far-infrared study on single crystals Phys. Rev. B 72, 073108 (2005).
  28. N. O. Moussa, G. Molnár, X. Ducros, A. Zwick, T. Tayagaki, K. Tanaka and A. Bousseksou, Decoupling of the molecular spin-state and the crystallographic phase in the spin-crossover complex [Fe(ptz)6](BF4)2 studied by Raman spectroscopy Chem. Phys. Lett. 402, 503 (2005)
  29. H. Oyanagi, T. Tayagaki, and K. Tanaka, Local Structure of Spin-Crossover Complex Studied by X-Ray Absorption Spectroscopy: Nature of Photo-Induced Phase Physica Scripta. T115, 107-109 (2005).
  30. T. Tayagaki, K. Tanaka, and H. Okamura , Modification of vibrational selection rules in the photoinduced spin-crossover phase Phys. Rev. B 69, 64104 (2004).
  31. H. Okamura, M. Matsubara, T. Tayagaki, K. Tanaka, Y. Ikemoto, H. Kimura, T. Moriwaki, and T. Nanba, Infrared study of spin crossover Fe–picolylamine complex J. Phys. Soc. Jpn. 73, 1355 (2004)
  32. H. Oyanagi, T. Tayagaki, and K. Tanaka, Photo-induced phase transitions probed by X-ray absorption spectroscopy: Fe(II) spin crossover complex J. Phys. Chem. Solids 65, 1485 (2004).
  33. N. Huby, L. Guérin, E. Collet, L. Toupet, J.-C. Ameline, H. Cailleau, T. Roisnel, T. Tayagaki, and K. Tanaka, Photoinduced spin transition proved by x-ray diffraction Phys. Rev. B 69, 020101(R) (2004)
  34. K. Tanaka and T. Tayagaki, A new spin-crossover-complex phase generated by photo-induced phase transition Phase Transitions 75, 689 (2002)
  35. M. Kamada, K. Takahashi, Y. Doi, K. Fukui, T. Tayagaki and K. Tanaka, Photoelectron spectroscopic study on photo-induced phase transition of spin-crossover complex Phase Transitions 75, 847 (2002)
  36. K. Takahashi, M. Kamada, Y. Doi, K. Fukui, T. Tayagaki, and K. Tanaka, Photoinduced phase transition of a spin-crossover complex studied with the combination of SR and laser Surface Review and Letters 9, 319 (2002)
  37. T. Tayagaki and K. Tanaka, Photoinduced phase transition to a new macroscopic phase in the spin-crossover complex J. Luminescence 94-95, 537 (2001)
  38. T. Tayagaki and K. Tanaka , Photoinduced phase transition to a new macroscopic spin-crossover-complex phase Phys. Rev. Lett. 86, 2886 (2001).
  39. M. Shirai, N. Yonemura, T. Tayagaki, K. Kan’no and K. Tanaka, Electron spin resonance study of the photo-induced phase transition in the spin-crossover complex J. Luminescence 94-95, 529 (2001)
  40. T. Tayagaki, K. Tanaka, N. Yonemura, M. Shirai and K. Kan’no, Symmetry lowering in the photoinduced phase in spin-crossover complexes Int. J. Mod. Phys. B 15, 3709 (2001)
  41. M. Shirai, T. Tayagaki, K. Tanaka and K. Kan’no, Hole burning on the time-resolved optically detected ESR spectra of self-trapped excitons in alkali halides J. Luminescence 87-89, 1090 (2000).

Update: Apr 14,2012