Figure 3. Characterization of the SWCNT film.

(a), Thickness of SWCNT films as a function of aliquot volume of the SWCNT dispersion. The film thickness varies also as a function of different dispersion concentrations. We report for instance, thickness values for c = 0.008% (blue squares) and c = 0.002% (red dots). (b), Absorption spectrum of a SWCNT film. Colored regions represent the first S₁₁, the second S₂₂, and the third S₃₃ optical transition range for semiconducting chirality and the first M₁₁ range for metallic chirality. (c), Transmittance at 550 nm as a function of the SWCNT film sheet resistance and thickness. The ticker the film, the lower the transmittance, therefore the lower the sheet resistance. Uncertain bars represent systematic errors.