One?Dimensional Molecular Metal Halide Materials: Structures, Properties, and Applications

Metal halides with low-dimensional molecular structures are the rising stars in horizon of functional materials research. Among them, 1D metal halide hybrids very promising for future optoelectronic applications because their unusual photophysical properties resulting from strong quantum confinement. In past few years, besides lead-based hybrids, research has been extended to lead-free organic and all-inorganic halides. Due near-unity photoluminescence yield excellent structural stability, suitable environmentally friendly devices. Moreover, distortion connectivity mode octahedra arouse formation self-trapped excitons within halides, thus endowing distinct optical properties. Recent investigations have revealed many exciting characteristics this new class materials, such as ferroelectricity, ferromagnetism, cooling, so on. This perspective presents not only structure–property correlations recent but also existing challenges directions.