Remote Stereocontrol and Spin Selective Transport in Chiral Metal Halide Semiconductors

Chirality is emerging as a promising new frontier in halide perovskite research, given the outstanding promise to control structural symmetry breaking and the resulting optoelectronic properties. Chiroptical properties in low-dimensional hybrid halide perovskites typically stem from symmetry breaking by a chiral A-site cation in the lattice, limiting the compositional space. Here, we demonstrate remote stereocontrol of the inorganic sub-lattice of achiral hybrid metal halides by using a non-ammonium, non-A site chiral molecule, resulting in large circular dichroism dissymmetry factors. Different types of spin selective transport manifesting in chiral halide perovskites will also be discussed based on pseudo spin valves.