Development of ultra-efficient terahertz devices by exploiting multiple exciton generation in single-walled carbon nanotubes
Project/Area Number |
19K15047
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 21060:Electron device and electronic equipment-related
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Research Institution | Osaka University |
Principal Investigator |
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Project Period (FY) |
2019-04-01 – 2021-03-31
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Project Status |
Completed (Fiscal Year 2020)
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Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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Keywords | carbon nanotubes / terahertz emission / photocurrent / exciton dynamics / carrier dynamics / photoconductive antenna / Boltzmann equation / Terahertz devices / Carbon nanotubes / Carrier dynamics |
Outline of Research at the Start |
The first part is the understanding the fundamentals of ultrafast optoelectronic response in CNT and other low-dimensional materials. These understandings will then be used in the development of efficient THz devices based on these materials. This will be done by designing optimal device structures.
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Outline of Final Research Achievements |
We achieved the following milestones over the course of our project: (1) successful integration of carbon nanotubes (CNTs) in photoconductive antenna devices, (2) demonstrated their promising efficiencies as terahertz (THz) emitters, and (3) showed that THz emission spectroscopy is a powerful tool in unraveling quasiparticle dynamics in low dimensional materials.
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Academic Significance and Societal Importance of the Research Achievements |
We were able to get a clearer understanding of dynamics of free carriers and excitons in carbon nanotubes. From a scientific standpoint, this demonstrates the drastically different behavior of low-dimensional materials. It also brings us closer to their application in future optoelectronic devices.
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Report
(3 results)
Research Products
(12 results)
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[Journal Article] Terahertz Excitonics in Carbon Nanotubes: Exciton Autoionization and Multiplication2020
Author(s)
Filchito Renee G. Bagsican, Michael Wais, Natsumi Komatsu, Weilu Gao, Lincoln W. Weber, Kazunori Serita, Hironaru Murakami, Karsten Held, Frank A. Hegmann, Masayoshi Tonouchi, Junichiro Kono, Iwao Kawayama, and Marco Battiato
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Journal Title
Nano Lett. 2020
Volume: 20,05
Issue: 5
Pages: 3098-3105
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Presentation] Ultrafast Exciton Dynamics in Semiconducting Carbon Nanotubes Probed by Terahertz Emission and Photocurrent Spectroscopy2020
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
Related Report
Int'l Joint Research
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[Presentation] Probing photocarrier dyamics in semiconducting carbon nanotubes by terahertz emission spectroscopy2019
Author(s)
Filchito Renee G. Bagsican, Iwao Kawayama, Michael Wais, Natsumi Komatsu, Kazunori Serita, Weilu Gao, Lincoln Weber, Marco Battiato, Hironaru Murakami, Frank A. Hegmann, Junichiro Kono and Masayoshi Tonouchi
Organizer
21st SPVM National Physics Conference, and 2019 Int’l. Conference on Advanced Functional Materials and Nanotechnology
Related Report
Int'l Joint Research / Invited
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[Presentation] Terahertz Emission from a Photoconductive Antenna Switch Based on Aligned Single-Chirality Semiconducting Carbon Nanotubes2019
Author(s)
F.R. Bagsican, I. Kawayama, M. Wais, N. Komatsu, K. Serita, W. Gao, L. Weber, M. Battiato, H. Murakami, F.A. Hegmann, J. Kono, and M. Tonouchi
Organizer
The 21st International Conference on Electron Dynamics in Semiconductors, Optoelectronics and Nanostructures (EDISON21)
Related Report
Int'l Joint Research
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[Presentation] Terahertz emission from photoconductive antenna switches based on highly-aligned and chirality-enriched semiconducting carbon nanotubes2019
Author(s)
F.R. Bagsican, I. Kawayama, M. Wais, N. Komatsu, K. Serita, W. Gao, L. Weber, M. Battiato, H. Murakami, F.A. Hegmann, J. Kono, and M. Tonouchi
Organizer
Optical Terahertz Science & Technology Conference (OTST)
Related Report
Int'l Joint Research