Dependence of the conductivity of PEDOT:PSS-Carbon nanotubes composite films on the deposition method

Abstract

The dependence of conductivity of the composite PEDOT:PSS with embedded carbon nanotubes films on the method of its preparation was investigated. Especially, a method of layer-by-layer deposition of carbon nanotubes and the method of film deposition from a mixture of PEDOT:PSS with carbon nanotubes (CNT) are compared. The electrophysical film parameters were obtained from a four-point probes measurements while optical parameters from spectroscopic ellipsometry. Our results showed that the method of layer-by-layer deposition of CNT and PEDOT:PSS allows one to obtain films with higher conductivity (≈170–180 S/cm) compared to the method of depositing a film from their mixture (≈62–92 S/cm).