Proton irradiation effect on single-wall carbon nanotubes in a poly(3-octylthiophene) matrix

Journal Article · Mon May 30 04:00:00 UTC 2005 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.1940721· OSTI ID:20702409

Neupane, P P; Manasreh, M O; Weaver, B D; Rafaelle, R P; Landi, B J ^[1]

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1. Department of Electrical Engineering, 3217 Bell Engineering Center, University of Arkansas, Fayetteville, Arkansas 72701 (United States)

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 5.0x10{sup 10} cm{sup -2} and 5.6x10{sup 15} cm{sup -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 5.6x10{sup 15} cm{sup -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.

• OSTI ID: 20702409
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 22 Vol. 86; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
ABSORPTION SPECTRA
CARBON
COOLING
EV RANGE 01-10
IRRADIATION
MEV RANGE 01-10
NANOTUBES
PROTON BEAMS
PROTONS
RAMAN EFFECT
RAMAN SPECTRA
TEMPERATURE RANGE 0000-0013 K