2011 Fiscal Year Final Research Report
Study on Photophysics of Functionalized Single-Walled Carbon Nanotubes
| Project Area | Carbon nanotube nanoelectronics |
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| Project/Area Number |
19054015
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| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | Tokyo University of Science |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
ICHIDA Masao 甲南大学, 理工学部, 准教授 (30260590)
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| Co-Investigator(Renkei-kenkyūsha) |
TOKUNAGA Eiji 東京理科大学, 理学部, 准教授 (70242170)
CHIASHI Shohei 東京大学, 大学院・工学系研究科, 助教 (50434022)
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| Project Period (FY) |
2007 – 2011
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| Keywords | カーボンナノチューブ / 光物性 / フォトルミネッセンス / 非線形応答 / 緩和ダイナミクス |
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| Research Abstract |
Strongly correlated electron-hole pairs (excitons) play a crucial role in photoemission from single-walled carbon nanotubes (SWNTs) due to their one-dimensionality. We have studied the effects of environment and defects on photoemission from SWNTs by using laser-induced photoluminescence spectroscopy of individual SWNT, and measuring nonlinear optical responses and temporal responses of SWNT bundles. Through the analysis of photoluminescence, we elucidated the interactions between SWNTs and molecules such as ethanol and water, and the change of emission states owing to defects. We also obtained fundamental optical properties of SWNTs including third-order nonlinear susceptibility, relaxation times of electronic distribution and phase, and infrared absorbance.
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