| 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 |
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| Review Section |
Basic Section 21060:Electron device and electronic equipment-related
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| Research Institution | Osaka University |
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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 |
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| 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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