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Exciton diffusion, end quenching, and exciton-exciton annihilation in individual air-suspended carbon nanotubes
http://hdl.handle.net/2261/59071
http://hdl.handle.net/2261/590718f8b8940-fc40-4f94-81d0-59439b144bda
名前 / ファイル | ライセンス | アクション |
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PhysRevB.91.125427.pdf (1.2 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2016-01-07 | |||||
タイトル | ||||||
タイトル | Exciton diffusion, end quenching, and exciton-exciton annihilation in individual air-suspended carbon nanotubes | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Ishii, A.
× Ishii, A.× Yoshida, M.× Kato, Y. K. |
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著者所属 | ||||||
著者所属 | Institute of Engineering Innovation, The University of Tokyo | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Luminescence properties of carbon nanotubes are strongly affected by exciton diffusion, which plays an important role in various nonradiative decay processes. Here we perform photoluminescence microscopy on hundreds of individual air-suspended carbon nanotubes to elucidate the interplay between exciton diffusion, end quenching, and exciton-exciton annihilation processes. A model derived from random-walk theory as well as Monte Carlo simulations are utilized to analyze nanotube length dependence and excitation power dependence of emission intensity. We have obtained the values of exciton diffusion length and absorption cross section for different chiralities, and diameter-dependent photoluminescence quantum yields have been observed. The simulations have also revealed the nature of a one-dimensional coalescence process, and an analytical expression for the power dependence of emission intensity is given. | |||||
書誌情報 |
Physical Review B 巻 91, 号 12, 発行日 2015-03-19 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2469-9969 | |||||
著者版フラグ | ||||||
値 | publisher | |||||
出版者 | ||||||
出版者 | American Physical Society |