Figure 2.

The photoemission response of metallicity-separated and purified single-walled carbon nanotube buckypapers. (a) C 1s photoemission of metallic (red upper curve) and semiconducting (blue lower curve) SWCNTs measured with a 400 eV photon excitation. The inset shows a survey scan, demonstrating the purity of the samples. (b) An expanded view of the C 1s line. The response of the metallic sample has been fitted with a Doniach–Šunjić and the semiconducting with a Voigtian lineshape. Reproduced with permission from [37], copyright 2009 The American Physical Society.