ArticleNature communications2024
Large exchange-driven intrinsic circular dichroism of a chiral 2D hybrid perovskite.
Article in Nature communications, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- Room-temperature spin control in WSScience advances · 2026Article
- Enhancing Chiroptical Selectivity and Device Stability of Chiral Perovskite Photodetectors Via Interfacial AlFSmall methods · 2026Article
- High-Brightness and Ultra-Long-Lifetime Spin Quantum Dot Light-Emitting Diodes Enabled by Efficient Injection of Spin-Polarized Holes Through a Hybrid Hole Transport Layer.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Giant and broadband circular dichroism from particle-hole symmetry breaking in Weyl semimetals.Nature materials · 2026Article
- Excitonic Structure and Dynamics in Two-Dimensional Halide Perovskites.Nano letters · 2026Article
- Chirality Engineering and Properties in Two-Dimensional Layered Materials.Small (Weinheim an der Bergstrasse, Germany) · 2026Review
- Light-Driven Intraoctahedral Halide Isomerization in Two-Dimensional Mixed Halide Perovskites.Journal of the American Chemical Society · 2026Article
- Cation Tuning of Polaron Barriers in Layered Perovskites for Optical Spin Lifetime Control.ACS energy letters · 2025Article
- Molecular Engineering of Interlayer Exciton Delocalization in 2D Perovskites.Journal of the American Chemical Society · 2025Article
- Chiroptical Activities of Low-Dimensional Lead-Free Chiral Halide Perovskites with White-Light Emission.Small science · 2025Article
- Control over Banded Morphologies and Circular Dichroism in Chiral Halide Perovskites.ACS nano · 2025Article
- Exploring chiral and achiral properties of novel multilayer 3D polymers: synthesis and characterization.RSC advances · 2025Article
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Authors and funding
13 authors.
Funding
Abstract
In two-dimensional chiral metal-halide perovskites, chiral organic spacers endow structural and optical chirality to the metal-halide sublattice, enabling exquisite control of light, charge, and electron spin. The chiroptical properties of metal-halide perovskites have been measured by transmissive circular dichroism spectroscopy, which necessitates thin-film samples. Here, by developing a reflection-based approach, we characterize the intrinsic, circular polarization-dependent complex refractive index for a prototypical two-dimensional chiral lead-bromide perovskite and report large circular dichroism for single crystals. Comparison with ab initio theory reveals the large circular dichroism arises from the inorganic sublattice rather than the chiral ligand and is an excitonic phenomenon driven by electron-hole exchange interactions, which breaks the degeneracy of transitions between Rashba-Dresselhaus-split bands, resulting in a Cotton effect. Our study suggests that previous data for spin-coated films largely underestimate the optical chirality and provides quantitative insights into the intrinsic optical properties of chiral perovskites for chiroptical and spintronic applications.
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