Luminescent Organic Metal Halide Hybrids Beyond Perovskites

Organic metal halide hybrids (OMHHs) are an emerging class of photoactive materials with exceptional structure and property tunability, which have seen applications in a wide range of areas, from light emitting diodes (LEDs) to photovoltaic cells (PVs) and radiation detectors. By choosing appropriate organic and metal halide components, the crystallographic structures of OMHHs can be finely controlled with metal halide units, for instance, metal halide octahedrons, forming distinct 3D, 2D, 1D, and 0D structures at the molecular level. The photophysical properties of OMHHs are found to exhibit strong dependence on their compositions and dimensionalities, with narrow direct band emissions often obtained in 3D metal halide perovskites and broadband molecule like emissions observed in low dimensional OMHHs. In this talk, I will present our recent efforts on the development and study of luminescent OMHHs beyond perovskites, by synthetically controlling the crystallographic structures of OMHHs and the interactions between organic and metal halide components in the hybrids. The applications of developed OMHHs in various types of optoelectronics will be discussed.