Development of ultra-efficient terahertz devices by exploiting multiple exciton generation in single-walled carbon nanotubes

2020 Fiscal Year Annual Research Report

• Project/Area Number: 19K15047
• Research Institution: Osaka University
• Principal Investigator: BAGSICAN Filchit 大阪大学, レーザー科学研究所, 特任研究員 (20791982)
• Project Period (FY): 2019-04-01 – 2021-03-31
• Keywords: carbon nanotubes / terahertz emission / photocurrent / exciton dynamics / carrier dynamics

Outline of Annual Research Achievements

Our achievements for this research project are two-fold. First, we have successfully demonstrated promising terahertz (THz) emission efficiencies using our unoptimized CNT-based devices. Secondly, we have demonstrated the use of THz emission spectroscopy, together with other experimental techniques and numerical simulations, in studying the out-of-equilibrium dynamics in low-dimensional materials.

Research Products

• [Int'l Joint Research] Rice University(米国)
  • Country Name: U.S.A.
  • Counterpart Institution: Rice University
• [Int'l Joint Research] Nanyang Technological University(シンガポール)
  • Country Name: SINGAPORE
  • Counterpart Institution: Nanyang Technological University
• [Journal Article] Ultrafast Terahertz Nanoseismology of GaInN/GaN Multiple Quantum Wells (2021)
  • Author(s): Mannan Abdul、Bagsican Filchito Renee G.、Yamahara Kota、Kawayama Iwao、Murakami Hironaru、Bremers Heiko、Rossow Uwe、Hangleiter Andreas、Turchinovich Dmitry、Tonouchi Masayoshi
  • Journal Title: Advanced Optical Materials Volume: n/a Pages: 2100258～2100258
  • DOI: 10.1002/adom.202100258
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Terahertz Excitonics in Carbon Nanotubes: Exciton Autoionization and Multiplication (2020)
  • Author(s): Bagsican Filchito Renee G.、Wais Michael、Komatsu Natsumi、Gao Weilu、Weber Lincoln W.、Serita Kazunori、Murakami Hironaru、Held Karsten、Hegmann Frank A.、Tonouchi Masayoshi、Kono Junichiro、Kawayama Iwao、Battiato Marco
  • Journal Title: Nano Letters Volume: 20 Pages: 3098～3105
  • DOI: 10.1021/acs.nanolett.9b05082
  • Peer Reviewed / Int'l Joint Research
• [Presentation] Ultrafast Exciton Dynamics in Semiconducting Carbon Nanotubes Probed by Terahertz Emission and Photocurrent Spectroscopy (2020)
  • Author(s): Filchito Bagsican, Michael Wais, Natsumi Komatsu, Weilu Gao, Kazunori Serita, Hironaru Murakami, Karsten Held, Iwao Kawayama, Junichiro Kono, Masayoshi Tonouchi, Marco Battiato
  • Organizer: The 81st JSAP Autumn Meeting
  • Int'l Joint Research