Our results demonstrate that the larger graphite flake size contributed significantly to the conductivity of the films, presumably due to the reduced number of electron hopping events required for current conduction. The integration of graphene within the PEDOT matrix enhanced the electrical pathways and increased the crystallinity of the composite films, confirmed through various characterization techniques, including Raman spectroscopy, X-ray diffraction, and scanning electron microscopy. Additionally, the PEDOT-graphene films exhibited remarkable transparency (approximately 75%) and robustness, making them suitable candidates for applications in organic electronics. We further explored the potential of these films in sensing applications, discovering a specific response to triethylamine (TEA) gas and highlighting their applicability in environmental monitoring and detection technologies.