Hybrid Improper Ferroelectricity and Moiré Superlattices-induced Exciton Quantization in Layered 2D Halide Perovskite

Sanika S. Padelkar, Sharidya Rahman, Mattia Belotti +10

2D Ruddlesden-Popper perovskites are compelling platforms for quantum-confined optoelectronics. However, polar order in iodide composition remains rare under ambient conditions, an…