Metal halide perovskites: promising materials toward next-generation circularly polarized luminescence

Abstract

Metal halide perovskites (MHPs) have emerged as highly appealing materials for circularly polarized luminescence (CPL) related applications, owing to their spin-related photoelectric properties and flexible structural adjustment.

Achieving Strong Circularly Polarized Luminescence through Cascade Cationic Insertion in Lead‐free Hybrid Metal Halides

“…Currently chiral perovskite single crystals mainly manifest themselves as zero‐/one‐/two‐dimensional (0D/1D/2D) structures. Three‐dimensional (3D) ones are theoretically feasible but scant in reality because of steric limitations for chiral A‐site cations [5b,6] . For 2D layered metal halides usually with large band gaps, the use of only one set of long‐chain chiral ligands greatly hinders the flexible design and wide application of CPL activity in perovskite devices [7] .…”

Strong Magnetically‐Responsive Circularly Polarized Phosphorescence and X‐Ray Scintillation in Ultrarobust Mn(II)–Organic Helical Chains

“…Recent efforts have focused on the development of CPL-active organo-inorganic materials (OIMs), which are composed of metal ions and chiral organic building blocks. [12][13][14] Easier synthesis, greater structural diversity, enhanced stability, and flexible emission adjustment allow one to consider OIMs as more prospective CPL emitters. [12] The current challenge in this hot field is the design of chiral OIMs with enhanced dissymmetry factor (g lum ) and high emission quantum yield (PLQY), which are crucial for practical purposes.…”

Rashba Effect and Spin-Dependent Excitonic Properties in Chiral Two-Dimensional/Three-Dimensional Composite Perovskite Films

“…Organic–inorganic hybrid perovskites (HPs) have been widely used in various optoelectronic applications due to their excellent optical properties. , Significantly, the structural flexibility and tunability of HPs allow the insertion of chiral organic cations into the skeletons, resulting in broken symmetry and introducing chirality from the former into the latter. , The chiral HPs with strong spin–orbit coupling (SOC) and a Rashba effect can be utilized for various novel functionalities, including spin field effect transistors, spin light-emitting diodes, spin polarization transport, and circularly polarized light (CPL) detection. − Therefore, the chiral HPs have prompted intensive research interest in the Rashba effect. For example, Jana et al used theoretical calculation methods to predict a significant Rashba–Dresslhaus spin polarization effect in chiral HPs .…”