Synthesis, Structuring, and Optical Properties of Chiral Hybrid Lead Halide Perovskites

Lead halide perovskites have emerged as highly efficient materials for optoelectronic applications due to their broad wavelength tunability, strong light absorption, and nonlinear light emission. Introducing chirality into the crystal structure enables the creation of materials that combine the advantages of both perovskites and chiral systems, such as differential interaction with circularly polarized light or chiral photoluminescence. In this work, we report a synthesis and structurization of lead halide organic–inorganic perovskites with  chiral ligands. Stable excitons in this material enable strong coupling of light with matter through an additional resonator such as an optical microcavity or appropriate crystal structuring. This allows for a new approach to spin-selective exciton - polaritons and on chip chiral light sources.