Single-Walled Carbon Nanotube Gold Nanohybrids:  Application in Highly Effective\nTransparent and Conductive Films

Abstract

We report a new technique to enhance the electrical conductivity of transparent single-walled carbon nanotube\n(SWNT) films with a negligible loss of their optical transmittance. Hybridization of the SWNT films with\ngold nanoparticles increased the electrical conductivity 2-fold to a maximum of 2.0 × 10⁵ S/m while maintaining\nthe transmittance of the initial value. The same trends are shown for other SWNT films with various initial\nconductivities and transparency levels. Functional changes in the gold-nanoparticle-coated SWNT films suggest\nthat the electrical conductivity change is due to an electron depletion mechanism as a result of a doping\neffect.