Molybdenum trioxide, used in high-temperature applications, has limitations in common operating environments due to its lacking electrical conductivity. In order to develop alcohol (ethanol and methanol) gas detecting devices based on its lamellar properties, composites were developed using lamellar \(\hbox {MoO}_3\) , obtained through the chemical delamination method in isopropanol, combined with organic materials, PEDOT:PSS. DFT simulations investigated the effect of PEDOT:PSS on \(\hbox {MoO}_3\) conductivity, aiming to broaden its functionality for conventional environmental operation. The results showed that the presence of the organic materials changed the properties of \(\hbox {MoO}_3\) from an insulator to a conductor. PEDOT:PSS was investigated, in different volumetric proportions, in order to assess the effectiveness of \(\hbox {MoO}_3\) in different configurations. To characterize the thin films, scanning electron microscopy (SEM) images, Raman spectroscopy, and electrical analyses were used. It was observed that at higher volumetric ratios of \(\hbox {MoO}_3\) to PEDOT:PSS (30:1), the response time for saturation was reduced, and the electrical variation was extended. In addition, a correlation was observed between the electrical response and the concentration of PEDOT:PSS.
