Zero-dimensional hybrid zinc halides with blue light emissions

To solve the toxicity problem of blue light emissive three-dimensional lead halide perovskite, zero-dimensional lead-free hybrid halides with low cost and high emission efficiency have become one of the most promising solid-state light emitting materials. Herein, by utilizing discrete [ZnBr4]2− tetrahedrons as optical center, a new series of organic–inorganic hybrid zinc halides of AZnBr4 (A = NMPz, MPz, and AMPd) were presented as blue light emitters. Excitingly, these zero dimensional halides exhibit bright blue-light emission with the highest photoluminescence quantum yield of 17.28%, acting as down-conversion phosphors to assembly high-performance white-light emitting diode.