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Ligand-Driven Chirality in Perovskites for Advanced Optoelectronics.
Boesung Kwon1, Jonghyun Park1, Wonbin Choi1
1School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea.
ACS Applied Materials & Interfaces
|September 16, 2025
Summary
Chiral hybrid organic-inorganic perovskites (HOIPs) offer tunable properties for advanced electronics. Ligand engineering and device design are key to optimizing their performance in CPL detection and neuromorphic computing.
Area of Science:
- Materials Science
- Organic Chemistry
- Solid-State Physics
Background:
- Chiral hybrid organic-inorganic perovskites (HOIPs) are emerging as versatile materials.
- Their unique properties stem from chiral organic cations breaking inversion symmetry.
- Applications include CPL detection, spintronics, and neuromorphic computing.
Purpose of the Study:
- To provide a comprehensive review of ligand engineering strategies for chiral HOIPs.
- To explore the impact of ligand structure on chiroptical properties.
- To discuss advanced device architectures utilizing chiral HOIPs.
Main Methods:
- Systematic overview of ligand engineering techniques (aromatic, halogenated, polymerizable, π-conjugated).
- Analysis of how ligand geometry, hydrogen bonding, and steric effects influence chiroptical properties.
- Review of device architectures including two-photon photodetectors, spin-filtering interfaces, and synaptic devices.
Main Results:
- Ligand engineering significantly impacts the structural and electronic properties of HOIPs.
- Specific ligand designs can precisely tune chiroptical responses.
- External modulation (strain, surface anchoring) can further enhance chiral properties.
- Novel device architectures demonstrate the potential of chiral HOIPs.
Conclusions:
- Ligand design is crucial for tailoring HOIPs for specific optoelectronic and spintronic applications.
- Chiral HOIPs show great promise for next-generation CPL detection and neuromorphic devices.
- Molecular-level design insights are essential for advancing chiral optoelectronic systems.
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