論文

• Keiki Fukumoto, Shin-ya Koshihara, Ken Onda. Lifetimes of photogenerated electrons on a GaAs surface affected by nanostructural defects, Applied Physics Express, Vol. 8, No. 10, Sept. 2015.  公式リンク  
  
• Keiki Fukumoto, Onda, Ken, Yamada, Yuki, Matsuki, Takashi, Mukuta, Tatsuhiko, Tanaka, Sei-ichi, Shin-ya Koshihara. Femtosecond time-resolved photoemission electron microscopy for spatiotemporal imaging of photogenerated carrier dynamics in semiconductors, Review of Scientific Instruments, Vol. 85, No. 8, Aug. 2014.  公式リンク  
  
• Keiki Fukumoto, Yamada, Yuki, Onda, Ken, Shin-ya Koshihara. Direct imaging of electron recombination and transport on a semiconductor surface by femtosecond time-resolved photoemission electron microscopy, Applied Physics Letters, Vol. 104, No. 5, pp. 14, Feb. 2014.  公式リンク  
  
• Keiki Fukumoto, Fukazawa, N., Ishikawa, T., Shin-ya Koshihara, Yamamoto, H. M., Kato, R., Onda, K.. Photo-Induced Structural Changes at a Surface of Organic Single Crystals Observed by Vibrational Sum Frequency Generation Spectroscopy, Acta Physica Polonica a, Vol. 121, No. 2, pp. 313-315, Feb. 2012.  公式リンク  
  

国際会議発表 (査読有り)

• Shin-ya Koshihara, Keiki Fukumoto, Ken Onda. Role of the femtosecond time-resolved photoemission electron microscopy for the imaging of photo-generated carrier dynamics, The PacificChem2015(International Chemical Congress of, Dec. 2017.
• Keiki Fukumoto, Ken Onda, Shin-ya Koshihara. Spatial, temporal, and spectral observation of photo-excited states using fs-PEEM, PIPT6, Photoinduced Phase Transitions 6, June 2017.
• Keiki Fukumoto, Yuuki Yamada, Takashi Matsuki, Ken Onda, Tomohiro Noguchi, Raisei Mizokuchi, Shunri Oda, Shin-ya Koshihara. Visualization of ultrafast electron dynamics using time-resolved photoemission electron microscopy, International Conference on Ultrafest Phenomena, July 2014.
• Ayse Seyhan, Keiki Fukumoto, Yuuki Yamada, Takashi Matsuki, Ken Onda, Shin-ya Koshihara, Yoshifumi Nakamine, Kazufumi Ikemoto, Kengo Funaki, Shunri Oda. Direct Imaging of Carrier Dynamics in Si Nanocrystals by Using Femtosecond Time-Resolved Photoemission Electron Microscopy, Materials Research Society, Apr. 2014.
• Yuuki Yamada, Takashi Matsuki, Keiki Fukumoto, Ken Onda, Kazufumi Ikemoto, Kengo Funaki, Ayse Seyhan, Shunri Oda, Shin-ya Koshihara. Imaging of the photo-carrier dynamics in a semiconductor by time-resolved photoemission electron microscopy, International School and Symposium on Molecular Materials (ISSMM2013), 2013.

国際会議発表 (査読なし・不明)

• Keiki Fukumoto, Shin-ya Koshihara. Imaging of photogenerated electron dynamics on a semiconductor surface, AES 2017, the 5th Advanced Electromagnetics Symposium, July 2017.
• Ken Sakurai, Keiki Fukumoto, Mohamed Boutchich, Hakim Arezki, Ken Onda, Shin-ya Koshihara. Spatio-temporal observation of photo generated carrier dynamics in twisted graphene, Symposium on Surface and Nano Science 2017, Jan. 2017.
• Keiki Fukumoto, Ken Onda, Shin-ya Koshihara. Development of carrier imaging microscopy with spatial, temporal, and spectral resolution, Symposium on Surface and Nano Science 2017, Jan. 2017.
• K. Fukumoto, M. Boutchich, H. Arezki, K. Sakurai, K. Onda, S. Koshihara. Spatio-temporal observation of photogenerated electron dynamics in twisted graphene, The 4th Advanced Electromagnetics Symposium AES2016, July 2016.
• K. Fukumoto, K. Onda, S. Koshihara. Direct imaging of photogenerated electron dynamics in semiconductor nanostructures using time-resolved photoemission electron microscopy, Symposium on Surface and Nano Science 2016, Jan. 2016.
• Shin-ya Koshihara, Keiki Fukumoto, Ken Onda. Visualization of ultrafast electron dynamics using time-resolved photoemission electron microscopy, 4th International Workshop on Ultrafast Nanooptics (UNO-4), Oct. 2015.

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