Proton irradiation effect on single-wall carbon nanotubes in a poly(3-octylthiophene) matrix
| Autor: | M. O. Manasreh, P. P. Neupane, R. P. Rafaelle, B. J. Landi, B. D. Weaver |
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| Rok vydání: | 2005 |
| Předmět: | |
| Zdroj: | Applied Physics Letters. 86:221908 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/1.1940721 |
| Popis: | Proton irradiation effects on interband transitions in single-wall carbon nanotubes matrixed in poly(3-octylthiophene) were investigated. The interband transitions were measured using an optical absorption technique. Two interband transitions were observed, at 0.71 and 1.28 eV in a sample that was subject to 2 MeV proton irradiation to fluences ranging between 5.0×1010cm−2 and 5.6×1015cm−2. The optical absorption spectra were collected after cooling the sample to 10 K. The total integrated areas of the two transitions were monitored as a function of proton fluence. The results indicate that proton irradiation to fluences as high as 5.6×1015cm−2 has little effect on the interband transitions in carbon nanotubes. However, small radiation-related degradation has been observed as judged by the broadening of the interband transition spectra and by the reduction of the radial breathing mode intensity observed by Raman scattering. |
| Databáze: | OpenAIRE |
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