Organic Up-Conversion Devices (OUDs) are electronic devices that convert infrared light into visible light. To achieve this, they utilize organic photodetectors with absorption bands in the near-infrared (NIR) range that absorb low-energy photons. By using a specific architecture of organic thin films capable of transporting, blocking, and recombining charge carriers, they emit higher-energy photons in the visible range. In recent years, OUDs have become key candidates for a wide range of applications in medicine, optical communication, security, chemical and biological sensors, among others. The path taken so far in the construction of these devices is considerably short due to their manufacturing complexity and the technical challenges required to achieve good efficiencies and operational stability. This is why there are few works in the literature on this subject. Given this context, this work aimed to contribute to the research on OUDs by exploring some characteristics and investigating their operation using previously unreported architectures. Thus, OUDs were fabricated by resistive thermal deposition using different phthalocyanines and naphthalocyanines as photodetector layers: tin phthalocyanine SnPc, tin naphthalocyanine SnNc, and chloroaluminum phthalocyanine ClAlPc, all presenting absorption bands in the NIR. Once the devices were fabricated, they were characterized from an electrical perspective (current-voltage curves) and an optical perspective (luminance) at the Molecular Optoelectronics Laboratory (LOEM). As a result, naphthalocyanine SnNc exhibited the best performance parameters: current density of the order of 10-2 𝑚𝐴 𝑐 𝑚 22, brightness ratio 𝐿 𝑁𝐼𝑅 𝐿 𝐷𝐴𝑅𝐾 of around 2350 at 12 V, and photon–photon conversion efficiency of 4.8%. The other compounds, SnPc and ClAlPc, also showed favorable results for their parameters, achieving photon–photon conversion efficiencies of 3.7% and 3.4%, respectively.