2016 Fiscal Year Final Research Report
Exciton-exciton annihilation and photon correlation in suspended carbon nanotubes
| Project/Area Number |
26610080
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Condensed matter physics I
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| Research Institution | Institute of Physical and Chemical Research (2016)
The University of Tokyo (2014-2015) |
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Principal Investigator |
KATO Yuichiro 国立研究開発法人理化学研究所, 加藤ナノ量子フォトニクス研究室, 准主任研究員 (60451788)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | ナノチューブ・フラーレン / 光物性 / 物性実験 |
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| Outline of Final Research Achievements |
Photoluminescence spectroscopy and photon correlation measurements were performed on individual air-suspended carbon nanotubes. Quantitative understanding of exciton-exciton-annihilation process was obtained and the possibility of room-temperature single-photon emission was examined. Effects of suspended length, chirality, and excitation power were investigated and compared with simulation results. Exciton-exciton annihilation rates were found to scale with the third power of exciton density, which is a unique characteristics of one-dimensional systems. Second order photon correlation below 0.5 was observed at room temperature, confirming the generation of single photons.
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| Free Research Field |
光物性・ナノデバイス物理
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