Lead(II) phthalocyanine is primarily used in the field of organic electronics due to its excellent semiconducting properties. It is often employed in the fabrication of organic field-effect transistors (OFETs) and organic photovoltaics (OPVs), where its ability to efficiently transport charge carriers is highly valued. Additionally, it finds application in the development of chemical sensors, particularly for detecting gases, owing to its sensitivity to changes in the surrounding environment. In the realm of dyes and pigments, it is utilized for its stability and intense coloration, making it suitable for specialized coatings and inks. Its unique optical properties also make it a candidate for use in nonlinear optical materials, which are essential in advanced photonic devices.