<p>The synthesis of an optoelectronic device with solar cell-like characteristics is carried out via a one-pot process to create a MoS₃-MoO₃-poly-2-aminothiophenol/polypyrrole (MoS₃-MoO₃-P2ATP/Ppy) structure. In this device, the MoS₃-MoO₃-P2ATP component serves as the <i>n</i>-layer, while Ppy functions as the <i>p</i>-type material. The <i>n</i>-layer exhibits exceptional optical absorption across a wide spectrum, ranging from ultraviolet (UV) to infrared (IR), characterized by a narrow bandgap of 1.8 eV. The performance of the MoS₃-MoO₃-P2ATP/Ppy device is evaluated based on its wide optical absorption, which spans most of the visible light spectrum. The device demonstrates current density (<i>J</i>_ph) of 0.32 mA/cm² under general light illumination. When exposed to monochromatic light at 340 nm, the <i>J</i>_ph value decreases slightly to 0.29 mA/cm². In addition, the photoresponsivity (<i>R</i>) and detectivity (<i>D</i>) of the device are determined, yielding an <i>R</i>-value of 1.47 mA/W and a peak <i>D</i>-value of 3.28 × 10⁸ Jones at 340 nm. These metrics emphasize the device’s efficiency in converting incoming light into electrical current, indicating its strong potential as a highly sensitive photodetector. Additionally, the device’s solar cell characteristics are assessed through its short-circuit current (<i>J</i>_SC) and open-circuit voltage (<i>V</i>_OC). The <i>J</i>_SC is recorded at 2.8 µA/cm², while the <i>V</i>_OC reaches 0.09 V, demonstrating the device’s capability to generate current and voltage under light exposure. Given the outstanding optical advantages and technical performance of this thin-film device, it is recommended for industrial applications as a thin-film sensor for photon sensing and solar cells. The potential to harness renewable energy through this device positions it as a valuable contributor to sustainable energy sources, aligning with the global push for clean and renewable energy solutions.</p>