K. YAMASHITA

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国際会議発表

1. " Photophysics of organic single crystal microcavities ", K. Yamashita, 7th International Workshop on Epitaxial Growth and Fundamental Properties of Semiconductor Nanostructures, Kobe, Japan, 25, Sep. 2019.

2. " Dry/wet hybrid growth of FA1-xMAxPbI3-xBrx perovskite films ", J. Kagae, T. Yamanaka, S. Kanbe, and K. Yamashita, 10th International Conference on Molecular Electronics & BioElectronics, Nara, Japan, 26, Jun. 2019.

3. " Microcavity with organic luminescent material with long exciton lifetime ", K. Imai and K. Yamashita, 10th International Conference on Molecular Electronics & BioElectronics, Nara, Japan, 26, Jun. 2019.

4. " Light amplification characteristics of CsPbBr3 single crystal nanoplates ", S. Enomoto and K, Yamashita, 10th International Conference on Molecular Electronics & BioElectronics, Nara, Japan, 25, Jun. 2019.

5. " Compact organic solid-state laser with wide wavelength tunability ", M. Taguchi, Y. Higase, and K. Yamashita, 10th International Conference on Molecular Electronics & BioElectronics, Nara, Japan, 25, Jun. 2019.

6. (Invited)" Organic single crystal microcavities with strong light-matter coupling ", K. Yamashita, 2019 Collaborative Conference on Materials Research (CCMR), Goyang. South Korea, 6, Jun. 2019.

7. " Strong light-matter coupling and photoluminescence properties of 2D and quasi-2D perovskite microcavities ", S. Zhang, L. Ni, A. Rao, and K. Yamashita, Compound Semiconductor Week 2019, Nara, Japan, 21, May. 2019.

8. " Chiral cavity mode in a GaAs-based three-dimensional photonic crystal fabricated by a micro-manipulation method using an optical microscope ", Y. Kinuta, S. Takahashi, K. Yamashita, J. Tatebayashi, S. Iwamoto, and Y. Arakawa, Compound Semiconductor Week 2019, Nara, Japan, 20, May. 2019.

9. (Invited)" Photonics in Organic Crystal Microcavities with Strong Light-Matter Coupling", K. Yamashita, 4th Global Congress & Expo on Material Science and Nanoscience, Amsterdam, Netherland, 15, Oct. 2018.

10. " Formation of cavity polariton in organic electroluminescence devices with thiophene/phenylene co-oligomer derivatives", S. Dokiya, H. Mizuno, H. Katsuki, K. Yamashita, F. Sasaki, and H. Yanagi, The 12th International Conference on Excitonic and Photonic Peocesses in Condensed Matter and Nano Materials, Nara, Japan, 10, Jul. 2018.

11. " Strong coupling formation in organic crystal microcavities", T. Nishimura, K. Imai, S. Takahashi, K. Yamashita, H. Yanagi, and M. Nakayama, The 12th International Conference on Excitonic and Photonic Peocesses in Condensed Matter and Nano Materials, Nara, Japan, 10, Jul. 2018.

12. " Control of optical gain band by excited state coupling in polymer thin film co-doped with organic dyes", Y. Higase, S. Morita, T. Fujii, K. Yamashita, and F. Sasaki, The 12th International Conference on Excitonic and Photonic Peocesses in Condensed Matter and Nano Materials, Nara, Japan, 10, Jul. 2018.

13. (Invited)" Photonics in Organic Crystal Microcavity", K. Yamashita, T. Yamao, and S. Hotta, EMN meeting on Organic Electronics and Photonics,, San Sebastian, Spain, 11,Sep. 2016.

14. " Fabrication of Graded Index Profile in Self-Written Waveguide by UV Exposure Method", R. Hirakawa and K. Yamashita, IEEE CPMT Symposium Japan 2015, pp. 35-38 (04-03), Kyoto, Japan, 9, Nov. 2015.

15. " Emission Properties of Distributed-Feedback Plastic Waveguide Lasers Fabricated with Imprint Lithography", M. Nakazumi and K. Yamashita, 20th Microoptics Conference, pp. 238-239 (H71), Fukuoka, Japan, 27, Oct. 2015.

16. " Dispersion characteristics of cavity polariton in an oligomer single crystalvertical microcavity", K. Goto, K. Yamashita, H. Yanagi, F. Sasaki, T. Yamao, and S. Hotta, European Conference on Molecular Electronics 2015, (P237), Strasbourg, France, 4, Sep. 2015.

17. "Polymer optical waveguide composed of europium-aluminumacrylatecomposite core for compact optical amplifier and laser", M. Mitani, K. Yamashita, T. Fukui, and T. Ishigure,SPIE Photonics West 2015, Integrated Optics, Materials, and Technologies XIX,,San Francisco, California,10,Feb. 2015.

18. (Invited) "Vertical Cavity Surface Emitting Lasing from a Super-high Gain Organic Single Crystal", K. Yamashita, T. Yamao, and S. Hotta,The 2014 International Conference for Leading and Young Materials Scientists,,Sanya, China,23,Dec. 2014.

19. "Doping effects of fluorinated organic dyes on the open-circuit voltage of bulk-heterojunction photovoltaic devices", T. Watanabe and K. Yamashita, The 6th World Conference on Photovoltaic Energy Conversion, (6WePo.2.16), Kyoto, Japan, 26, Nov., 2014.

20. "Photovoltaic properties of bilayer organic heterostructure fabricated by inkjet printing technique", M. Inoue, T. Watanabe, and K. Yamashita, European Conference on Molecular Electronics 2013, (P226), London, UK, 6, Sep., 2013.

21. "Singlemode-Emitting Plastic Laser Fabricated by Waveguide Self-formation and Interference Exposure Processes", T. Kawaguchi and K. Yamashita, CLEO-PR&OECC/PS 2013, (WPA-38), Kyoto, Japan, 3, Jul., 2013.

22. "Photoinduced absorption measurement on a microchip equipped with organic dye-doped polymer waveguide", T. Kawaguchi, K. Nagai, and K. Yamashita, SPIE Optics + Optoelectronics 2013, (P-E5), Prague, Czech Republic, 15, Apr., 2013.

23. "Bulk-Heterojunction Photovoltaic Cells Doped with P3HT-Wrapped Single-Walled Carbon Nanotubes", S. Noda, J. T. Damasco Ty, K. Nobusawa, A. Ikeda, H. Yanagi, and K. Yamashita, 7th International Conference on Molecular Electronics and Bioelectronics, (E-P6), Fukuoka, Japan, 19, Mar., 2013.

24. "Optical Properties of Dye-doped Polymer Films Incorporating Photonic Nanostructures", K. Egami, T. Nakayama, Y. Kosaka, S. Tomita, A. Ishizumi, H. Yanagi, K. Yamashita, and K. Oe, 5th International Conference on Optical, Optoelectronics, and Photonic Materials and Applications, p. 268 (3P-59), Nara, Japan, 6, Jun., 2012.

25. "Carrier transport and charge transfer properties in coumarin-doped bulk-heterojunction materials", T. Watanabe, T. Maeda, K. Yamashita, and H. Yanagi, 5th International Conference on Optical, Optoelectronics, and Photonic Materials and Applications, p. 182 (1P-50), Nara, Japan, 4, Jun., 2012.

26. "Integrated light sources based on self-formed polymer waveguide doped with active medium", S. Sugimoto, T. Kawaguchi, and K. Yamashita, SPIE Photonics Europe 2012, Organic Photonics, (8435-60), Brussels, Belgium, 16, Apr., 2012.

27. "Array of vertical cavity microlaser using dye-doped photopolymer", K. Yamashita, H. Yanagi, and K. Oe, 17th Microoptics Conference, (H-62), Sendai, Japan, Nov., 2011.

28. "Photovoltaic effect in organic film comprised of conductive polymer nanofiber and fullerene derivative", K. Yamashita, T. Maeda, Y. Kusakabe, and M. Kotaki, European Conference on Molecular Electronics 2011, (P-049), Barcelona, Spain, Sep., 2011.

29. "Highly photostable lasing in an organic crystal of thiophene/phenylene co-oligomer", K. Watanabe, T. Yamao, K. Yamashita, S. Hotta, and K. Oe, CLEO/Europe-EQEC Conference 2011, (CE7.2), Munich, Germany, May, 2011.

30. "Two-dimensional photonic crystal lasers with dye-doped polymer fabricated by nanoimprint lithography", T. Nakayama, A. Ishizumi, S. Tomita, H. Yanagi, K. Yamashita, and K. Oe, International Symposium of Molecular Nanotechnology, (P-18), Nara, Japan, Dec., 2010.

31. "Dye-doped polymer laser in self-formed waveguide with highly efficient Fabry-Perot cavity", K. Yamashita, M. Ito, S. Sugimoto, T. Morishita, and K. Oe, EOS Annual Meeting 2010, Topical Meeting on Organic Photonics, (TOM5-3119), Paris, France, Oct., 2010.

32. "1.3 µm solid-state dye-doped plastic waveguide laser", T. Morishita, K. Yamashita, H. Yanagi, and K. Oe, 36th European Conference and Exhibition on Optical Communication, (P2.02), Torino, Italy, Sep., 2010.

33. "Surface-emitting polymer laser coupled with stimulated resonant raman scattering of dye-doped films", T. Miyamoto, A. Ishizumi, S. Tomita, H. Yanagi, K. Yamashita, and K. Oe, International Conference on Science and Technology of Synthetic Metals 2010, (5P-049), Kyoto, Japan, Jul., 2010.

34. "Solid-state dye-doped plastic waveguide laser in optical communication waveband", T. Morishita, K. Yamashita, H. Yanagi, and K. Oe, Photonics North 2010, p. 178 (OPTO-3-5-4), Ontario, Canada, Jun., 2010.

35. "Solid-state organic DFB laser in near-infrared wavelength region", K. Oe, S. Yuyama, T. Watanabe, and K. Yamashita, SPIE Photonic 2009, Devices + Applications, Organic Light Emitting Materials and Devices, (7415-42), San Diego, California, Aug., 2009.

36. "Organic distribute-feedback laser with simultaneous three-colour (R, G, & B) operations", K. Yamashita, T. Kimura, N. Takeuchi, K. Oe, and H. Yanagi, CLEO/Europe-EQEC Conference 2009, (CE7.5), Munich, Germany, Jun., 2009.

37. "Simultaneous two-color lasing of a solid state polymer distributed-feedback laser", K. Oe, M. Arimatsu, M. Takayama, K. Yamashita, and H. Yanagi, EOS Annual Meeting 2008, Topical Meeting on Organic Photonics, (Cancel), Paris, France, Sep., 2008.

38. "Infrared lasing emission from organic dye-doped fluorinated-polyimide planer waveguide", S. Yuyama, T. Nakajima, K. Yamashita, and K. Oe, The 15th International Conference on Luminescence and Optical Spectroscopy of Condensed Matter, (We-P-172), Lyon, France, Jul., 2008.

39. "Oscillating characteristics of self-written active waveguide laser with in-line cavity", K. Yamashita, M. Ito, A. Kitanobou, E. Fukuzawa, and K. Oe, 13th Optoelectronic and Communications Conference, (WeC-4), Sydney, Australia, Jul., 2008.

40. "Optical amplification and lasing in self-written active waveguide", K. Yamashita, A. Kitanobou, E. Fukuzawa, M. Itoh, and K. Oe, Conference on Lasers and Electro-Optics 2008, (CMK6), San Jose, California, May, 2008.

41. "Experimental investigation of anisotropic optical transition matrix elements in [110]-oriented InGaAs/InAlAs quantum well", K. Yamashita, H. Asai, and K. Oe, 34th International Symposium on Compound Semiconductors, p. 95 (MoE P3), Kyoto, Japan, Oct., 2007.

42. "CW operation of optical amplification in organic dye-doped polymeric channel waveguide", K. Yamashita, K. Hase, H. Yanagi, and K. Oe, 12th Optoelectronic and Communications Conference, p. 394 (12D2-1), Yokohama, Japan, Jul., 2007.

43. "High-gain optical amplification of europium- aluminum nanocluster doped planar polymer waveguides", H. Mataki, N. Mibuka, K. Tsuchii, A. Suzuki, S. Yamaki, J. Sun, H. Taniguchi, K. Yamashita, and K. Oe, 2007 Optical Fiber Communication Conference, (OtuK1), Anaheim, California, Mar., 2007.

44. "Temperature-insensitive wavelength emission and absorption characteristics of GaNAsBi/GaAs DH diodes", K. Oe, Y. Tanaka, W. Huang, G. Feng, K. Yamashita, M. Yoshimoto, Y. Kondo, and S. Tsuji, 32nd European Conference on Optical Communication, (We3.P.39), Cannes, France, Sep., 2006.

45. "Near-infrared optical amplification by organic dye as active medium", K. Yamashita, T. Kuro, K. Oe, and H. Yanagi, 11th Optoelectronic and Communications Conference, (6B4-5), Kaohsiung, Taiwan, Jul., 2006.

46. "Temperature-insensitive wavelength electroluminescent emission from GaNAsBi/GaAs DH diodes", K. Oe, Y. Tanaka, W. Huang, G. Feng, K. Yamashita, M. Yoshimoto, and Y. Kondo, Northern Optics 2006, p. 107 (W39), Bergen, Norway, Jun., 2006.

47. "Temperature-insensitive refractive index of GaAsBi alloy for laser diode in WDM optical communication", K. Yamashita, M. Yoshimoto and K. Oe, 32nd International Symposium on Compound Semiconductors, (WE P16), Rust, Germany, Sep., 2005.

48. "Fabrication method of singlemode self-written waveguide with constant core diameter in photosensitive polyimide", T. Kuro, K. Yamashita, K. Oe, K. Mune, T. Hikita, and A. Mochizuki, 8th International Symposium on Contemporary Photonics Technology, pp. 115 - 116 (P-18), Tokyo, Japan, Jan., 2005.

49. "Fabrication of all-solid core-cladding structure of self-written waveguide in photosensitive polyimide resin", K. Yamashita, T. Kuro, K. Oe, K. Mune, R. Naitou, K. Tagawa, and A. Mochizuki, 10th Micro Optics Conference, p. 81 (K2), Jena, Germany, Sep., 2004.

50. "Order-parameter dependence of spontaneous electron accumulation at Ga0.5In0.5P/GaAs studied by Raman-scattering and photoluminescence measurements", K. Yamashita, K. Oe, T. Kita, O. Wada, Y. Wang, C. Geng, F. Scholz, and H. Schweizer, 27th International Conference on the Physics of Semiconductors, Part A, pp. 387 - 388 (H5-95), Flagstaff, Arizona, Jul., 2004.

51. (Invited) "New waveguide technique using photosensitive polyimide for integrated optics", K. Oe, K. Yamashita, K. Mune, and A. Mochizuki, 16th Annual Meeting of the IEEE Lasers & Electro-Optics Society, Vol.2, pp. 527 - 528 (WE7), Tucson, Arizona, Oct., 2003.

52. "New fabrication method of core-cladding structure in self-written waveguide by using photosensitive polyimide", K. Yamashita, T. Hashimoto, K. Oe, K. Mune, R. Naitou, and A. Mochizuki, 29th European Conference on Optical Communication, pp. 256 - 257 (Tu3.5.5), Rimini, Italy, Sep., 2003.

53. "Magneto-optical properties of two-dimensional electron gas induced by atomic ordering at Ga0.5In0.5P/GaAs interface", K. Yamashita, Y. Matsuura, T. Kita, O. Wada, C. Geng, F. Scholz, and H. Schweizer, 26th International Conference on the Physics of Semiconductors, p. 90 (D60), Edinburgh, UK, Aug., 2002.

54. "High-density electron gas induced by atomic ordering in undoped Ga0.5In0.5P/GaAs heterostructure", K. Yamashita, T. Kita, O. Wada, C. Geng, F. Scholz, and H. Schweizer, 14th International Conference on Indium Phosphide and Related Materials, pp. 515 - 519 (PII-4), Stockholm, Sweden, May, 2002.

55. "Stranski-Krastanov growth of (In,Ga)As quantum dots by controlling the wetting layer", T. Kita, M. Nakahama, K. Yamashita, and O. Wada, 28th International Symposium on Compound Semiconductors, p. 155 (WeP-15), Tokyo, Japan, Oct., 2001.

56. "Dynamic evolution of reflectance anisotropy during (In,Ga)As quantum dots formation on GaAs(001)", T. Kita, M. Nakahama, M. Nakamoto, H. Tango, and K. Yamashita, 13th International Conference on Crystal Growth, p. 402 (03a-SB1-06), Kyoto, Japan, Aug., 2001.

57. "Two-dimensional electron gas at Ga0.5In0.5P/GaAs heterointerface spontaneously induced by atomic ordering", K. Yamashita, T. Kita, Y. Wang, K. Murase, C. Geng, F. Scholz, and H. Schweizer, 10th International Conference on Modulated Semiconductor Structures, p. 228 (ThP64), Linz, Austria, Jul., 2001.

58. "Internal electric field effects at ordered Ga0.5In0.5P/GaAs heterointerface investigated by photoreflectance spectroscopy", K. Yamashita, N. Nishida, T. Kakutani, T. Kita, Y. Wang, K. Murase, C. Geng, F. Scholz, and H. Schweizer, 13th International Conference on Indium Phosphide and Related Materials, pp. 330 - 333 (WP-52), Nara, Japan, May, 2001.

59. "Plasmon-phonon coupling at Ga0.5In0.5P/GaAs heterointerfaces induced by CuPt-type ordering", K. Yamashita, T. Kita, T. Nishino, Y. Wang, K. Murase, C. Geng, F. Scholz, and H. Schweizer, 25th International Conference on the Physics of Semiconductors, Part 1,pp. 453 - 454 (D070), Osaka, Japan, Sep., 2000.

60. "Optical anisotropy of Stranski-Krastanov growth surface of InAs on GaAs (001)", T. Kita, H. Tango, K. Tachikawa, K. Yamashita, T. Nishino, T. Nakayama, and M. Murayama, 25th International Conference on the Physics of Semiconductors, Part 1,pp. 365 - 366 (L22), Osaka, Japan, Sep., 2000.

61. "Reflectance-difference spectroscopy of (001) InAs surface in ultrahigh vacuum", T. Kita, H. Tango, K. Tachikawa, K. Yamashita, and T. Nishino, 25th International Conference on the Physics of Semiconductors, Part 1,pp. 353 - 357 (H051), Osaka, Japan, Sep., 2000.

62. "Energy relaxation by phonon scattering in long-range ordered (Al0.5Ga0.5)0.5In0.5P", T. Kita, K. Yamashita, T. Nishino, Y. Wang, and K. Murase, 25th International Conference on the Physics of Semiconductors, Part 1,pp. 218 - 219 (M030), Osaka, Japan, Sep., 2000.

63. "Interdiffusion effects at long-range ordered Ga0.5In0.5P and GaAs heterointerfaces", K. Yamashita, T. Kita, T. Nishino, Y. Wang, K. Murase, C. Geng, F. Scholz, and H. Schweizer, 12th International Conference on Indium Phosphide and Related Materials, pp. 154 - 157 (MP1.17), Williamsburg, Virginia, May, 2000.

64. "Dynamic process of InAs quantum-dots growth observed by reflectance-difference spectroscopy", H. Tango, K. Tachikawa, M. Nakahama, M. Nakamoto, K. Yamashita, T. Kita, and T. Nishino, 3rd SANKEN International Symposium, pp. 265 - 266 (P2-28), Osaka, Japan, Mar., 2000.

65. "New Raman-scattering modes of long-range ordered Ga0.5In0.5P and GaAs heterointerfaces", K. Yamashita, T. Kita, T. Nishino, Y. Wang, K. Murase, C. Geng, F. Scholz, and H. Schweizer, 3rd SANKEN International Symposium, pp. 298 - 299 (P2-45), Osaka, Japan, Mar., 2000.

66. "Cooling process of hot excitons in ordered Ga0.5In0.5P", T. Kita, M. Sakurai, K. Yamashita, T. Nishino, C. Geng, F. Scholz, and H. Schweizer, 12th International Conference on Ternary and Multinary Compounds, (P2-60), Hisn-Chu, Taiwan, Mar., 2000.

67. "Self-assembled growth of InAs-quantum dots and postgrowth behavior studied by reflectance-difference spectroscopy", T. Kita, K. Tachikawa, H. Tango, K. Yamashita, and T. Nishino, 3rd International Symposium on Control of Semiconductor Interfaces, p. 89 (B7-3), Karuizawa, Japan, Oct., 1999.

68. "Initial stages of InAs-quantum dots formation studied by reflectance-difference spectroscopy and photoluminescence", K. Yamashita, T. Kita, and T. Nishino, 26th International Symposium on Compound Semiconductors, pp. 107 - 108 (WeP-7), Berlin, Germany, Aug., 1999.

69. "Dynamic process of two-dimensional InAs growth in Stranski-Krastanov mode", T. Kita, K. Yamashita, H. Tango, and T. Nishino, 9th International Conference on Modulated Semiconductor Structures, pp. 55 - 56 (D14), Fukuoka, Japan, Jul., 1999.

70. "Energy relaxation by multiphonon processes in partially ordered (Al0.5Ga0.5)0.5In0.5P", T. Kita, M. Sakurai, K. Yamashita, and T. Nishino, 11th International Conference on Indium Phosphide and Related Materials, pp. 159 - 162 (MoP-24), Davos, Switzerland, May, 1999.

71. "Self-organized process of InAs-quantum dots monitored by reflectance-difference spectroscopy", T. Kita, T. Hagihara, K. Yamashita, and T. Nishino, 25th International Symposium on Compound Semiconductor, pp. 67 - 68 (TuP-11), Nara, Japan, Oct., 1998.

72. (Invited) "Observation of ordering-induced indirect to direct transition in AlGaInP", T. Kita, K. Yamashita, and T. Nishino, 40th Electronic Materials Conference, p. 27 (M2), Charlottesville, Virginia, Jun., 1998.

73. "Spin-polarized excitons in long-range ordered Ga0.5In0.5P", T. Kita, K. Bhattacharya, K. Yamashita, T. Nishino, C. Geng, F. Scholz, and H. Schweizer, 10th International Conference on Indium Phosphide and Related Materials, pp. 525 - 528 (ThP-3), Tsukuba, Japan, May, 1998.

74. "Efficiency of photoluminescence up-conversion at (Al0.5Ga0.5)0.5In0.5P and GaAs heterointerface", K. Yamashita, T. Kita, T. Nishino, and M. Oestreich, 10th International Conference on Indium Phosphide and Related Materials, pp. 521 - 524 (ThP-2), Tsukuba, Japan, May, 1998.

75. "High efficiency energy up-conversion induced by carrier localization in ordered (Al0.5Ga0.5)0.51In0.49P/GaAs heterointerface", K. Yamashita, T, Kita, and T. Nishino, 39th Electronic Materials Conference, p. 35 (P5), Fort Collins, Colorado, Jun., 1997.

76. "Up-converted photoluminescence from long-range ordered (Al0.5Ga0.5)0.51In0.49P on GaAs substrates", K. Yamashita, T. Kita, H. Nakayama, and T. Nishino, 2nd Asia Symposium on Condensed Matter Photophysics, pp. 89 - 92, Nara, Japan, Nov., 1996.

77. "Optical transitions in long-range ordered AlInP", T. Kita, K. Yamashita, H. Nakayama, T. Nishino, M. Kondow, and S. Minagawa, 22nd International Conference on the Physics of Semiconductors, Vol. 2, pp. 1181 - 1184, Vancouver, Canada, Aug., 1994.

　　連絡先：yamasita＠kit.ac.jp