Exciton Effects of Optical Transitions in Single-Wall Carbon Nanotubes
| Autor: | Arao Nakamura, Yoshihiko Tani, Yahachi Saito, Masao Ichida, Shuhei Mizuno |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Materials science
Absorption spectroscopy Exciton General Physics and Astronomy Infrared spectroscopy chemistry.chemical_element Carbon nanotube law.invention Optical properties of carbon nanotubes Condensed Matter::Materials Science Tight binding chemistry law Atomic physics Absorption (electromagnetic radiation) Carbon |
| Zdroj: | Journal of the Physical Society of Japan. 68:3131-3133 |
| ISSN: | 1347-4073 0031-9015 |
| Popis: | Absorption spectra have been measured in the near-infrared region for a thin-film sample of single-wall carbon nanotubes of 1.2–1.5 nm diameter. Two absorption peaks are observed at 0.7 and 1.2 eV. The observed spectrum has been compared with the calculation based on the tight-binding model taking into account the distribution of diameter and the helical arrangement of tubes. We have found that a one-dimensional exciton effect plays an important role in the fundamental optical transition of semiconducting single-wall carbon nanotubes. |
| Databáze: | OpenAIRE |
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