Materials investigation reveals structural distortion triggers forbidden magnetic dipole emission in two-dimensional perovskites, highlighting synthetic rules for advanced optoelectronics.
Key Points
Identify the symmetry-breaking structural mechanisms that activate nominally forbidden, out-of-plane magnetic dipole emission pathways in two-dimensional hybrid organic-inorganic perovskites.
Evaluated the relationship between crystal lattice geometry—specifically the deviation of interoctahedral bond angles from 180°—and out-of-plane magnetic dipole emissions.
Examined modular metal cation substitution by replacing lead (Pb) with tin (Sn) to determine the effect of lone-pair-driven dynamic structural distortions.
Anomalous out-of-plane magnetic dipole emission in two-dimensional perovskites correlates directly with the deviation of interoctahedral bond angles from 180°.
Modular cation substitution of lead with tin tunes the intensity of forbidden transitions via lone-pair-driven structural distortions, establishing a design principle for multipolar emission harvesting.