Observation of extremely low percolation threshold in Mo6S4.5I4.5 nanowire/polymer composites

Homogenous composite films were fabricated from a polymer doped with Mo6S4.5I4.5 nanowires. Alternating current and direct current electrical testing revealed percolative behavior characterized by an extremely low percolation threshold, pc = 1.3 × 10−5 and a maximum conductivity of 4 × 10−3 S/m. The low value of the percolation threshold can be explained by debundling of the nanowires at low concentration during sample preparation. This results in a homogenous dispersion of individual nanowires at low loading level.