Effect of Proton Irradiation on Single-Walled Carbon Nanotubes Studied Using Raman Spectroscopy

초록

We investigated single-walled carbon nanotubes (SWCNTs) under proton irradiation at various energies (1 similar to 18 MeV) and doses (1.0 x 10(2) similar to 1.0 x 10(-7) nC/mu m(2)) by using Raman spectroscopy. For a high-energy proton irraditation (1 similar to 18 MeV), no significant change in the Raman spectra was observed after the proton irradiation. However, for low-energy proton irradiations (1 similar to 6 MeV), some of the semiconducting SWCNTs exhibited an exceptional resistance to proton irradation damage. A striking change in the relative Raman intensity of the D-band with respect to the Raman intensity of the G-band was also observed after the proton irradiation.

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