Recent studies have demonstrated that single-walled carbon nanotube (SWCNT) films can be doped by a nitric/sulfuric acid treatment to significantly improve its conductivity. However, the sheet resistance is still too high for many applications. Here we report on a simple treatment using a piranha mixture that could further enhance SWCNT film conductivity. The high redox potentials of hydrogen peroxides combined with the acidity of sulfuric acid enabled strong p-doping of the carbon nanotube films. Absorption peak suppression and a G-band shift provided proof of strong p-doping of the SWCNT films. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
CITATION STYLE
Tantang, H., Xiao, J., Wei, J., Chan-Park, M. B. E., Li, L. J., & Zhang, Q. (2011). Low-cost and ultra-strong p-type doping of carbon nanotube films by a piranha mixture. European Journal of Inorganic Chemistry, (27), 4182–4186. https://doi.org/10.1002/ejic.201100396
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