All Inorganic Lead-Free Zero-Dimensional Metal Halide Luminescent Materials and Applications

Recently, zero-dimensional luminescent material has attracted researchers because of its optical properties, which is a possible candidate to replace lead halide perovskite. This review focused on the recent development of tetrahedrally and octahedrally coordinated inorganic halide semiconductor luminescent materials. We discuss the synthesis methods and crystal structures of these materials in this review. The materials are categorized based on the valence of central metal cations (monovalent, divalent, and trivalent). Finally, we have summarized the applications of these luminescent materials, such as light-emitting diodes, ultrafast switching memories, photodetectors, and scintillators. This review article provides an overview of recent progress on zero-dimensional materials and their applications for further development in the future.