“…The study area is now more focused on organic–inorganic materials, as they have gained significant interest and become an essential component due to their new physicochemical features. − Aside from being a brand-new area of basic study, they also offer new opportunities for applications in various industries, including solid electrolytes, optics, biomedicine, and catalysis. − Additionally, they are becoming more significant in energy storage, flash memory technology, and optoelectronics applications such as lasers and smart windows. − However, optical sensing is one area where metal halide perovskite single crystals excel. They are excellent for converting light signals into electrical ones, acting as high-efficiency photodetectors, because of their high responsivity and specific detectivity. , Due to their numerous physical and chemical characteristics, such as piezoelectricity, ferroelectricity, luminescence, and photocatalysis, complexes with the chemical formula A 2 MX 4 (A = organic cation, M = transition divalent metal ion, X = halide ion) have attracted considerable interest among hybrid materials. , Particularly, hybrid compounds based on cadmium halide have drawn interest in particular due to the many coordination topologies and structural flexibility of the Cd 2+ ion. , During the construction of novel cadmium-based compounds, organic templates are important in establishing their structures and properties.…”