This work investigates the use of MoS₂ and WSe₂ in hybrid devices, such as solar cells and photodetectors, by combining these 2D materials with the conjugated polymers PEDOT:PSS and P3HT. Heterojunction and composite structures were explored to harness the electronic properties of these materials. Electrical characterization was performed under simulated illumination and in the dark. In solar cells, I-V curves were used to extract key parameters such as open-circuit voltage (Voc), short-circuit current (Isc), fill factor (FF), series and shunt resistances (Rs and Rsh), maximum power point (MPP), and energy conversion efficiency (η).
For photodetectors, photoinduced response and photoconductivity were analyzed, allowing estimation of responsivity and detectivity. Complementary optical measurements, such as UV-Vis spectroscopy and external quantum efficiency (EQE), helped to understand optical absorption and evaluate the photon-to-current conversion capability at different wavelengths. The results demonstrate how MoS₂ and WSe₂ affect device efficiency and performance, reinforcing their potential in organic solar cells and photodetectors.
