Recently, studies on thin films have attracted increasing attention from scientists. Polyaniline thin films (PANI), which are among the thin films, are preferred for various applications due to their electrical conductivity, environmental stability, thermal stability and doping properties. PANI are used in many areas including supercapacitors, sensors, electronic devices, drug delivery systems. In this study, monolayer, five-layer, Ag-doped, and HCI-doped PANI thin films were synthesized by sol-gel method and coated on glass substrate via spin coating technique. The chemical, electrical, and morphological properties of glass substrates coated with polyaniline thin film were investigated. The effects of layer number and Ag addition on the characteristics of the PANI thin films were evaluated. SEM analysis revealed that PANI thin films possess a porous structure, and Ag doping improves surface homogeneity. SEM analysis proved that PANI thin films have a porous structure and Ag doping improves the surface morphology. Current–voltage (I–V) measurements were performed to determine the electrical properties of the films. The results showed that the conductivity of the five-layer PANI thin film was 25.75 times higher than that of the monolayer film. This finding suggests that Ag doping alters the charge transport mechanisms in PANI thin films and warrants further investigation.
Öntaş et al. (Mon,) studied this question.