2015 Fiscal Year Final Research Report
Optical responses of multiple excitons in semiconductor nanomaterials
| Project/Area Number |
25247052
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Condensed matter physics I
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
IHARA Toshiyuki 京都大学, 化学研究所, 助教 (10619860)
OKANO Makoto 京都大学, 化学研究所, 助教 (10612525)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | 光物性 / ナノ材料 / マルチエキシトン / エキシトン / 荷電励起子 / カーボンナノチューブ / ヘテロ構造ナノ粒子 |
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| Outline of Final Research Achievements |
We studied the optical properties of functional semiconductor nanomaterials such as carbon nanotubes, hetero-structured nanoparticles, and closed-packed nanoparticle films. By developing and applying techniques based on microscopy and pump-probe spectroscopy, we clarified the optical phenomena associated with multiple excitons, carriers, and their combinations. The mechanisms of Auger recombination, multiple exciton generation, and luminescence blinking were discussed based on the recombination dynamics of biexcitons and charged excitons. We elucidated that the dynamics of multiple excitons and carriers are strongly influenced by the structure of the nanomaterial.
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| Free Research Field |
半導体物理学、光物性
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