ISIS Neutron and Muon Source Data Journal
This is a page describing data taken during an experiment at the ISIS Neutron and Muon Source. Information about the ISIS Neutron and Muon Source can be found at https://www.isis.stfc.ac.uk.
Mechanism Study of Chiral Optical Activity in Hydrogen-Bond Induced Lead-Free Perovskites with Lattice Distortion
Abstract: This proposal aims to elucidate the mechanism of chiral optical activity in hydrogen-bond induced, lead-free perovskites exhibiting lattice distortion. Chiral perovskites demonstrate distinct optical properties, including circular dichroism (CD) and circularly polarized luminescence (CPL), highlighting their potential for advanced optoelectronic applications. We propose a "cascade cation insertion" strategy to synthesize six perovskite variants (P/M-DMA?InCl?, P/M-DMA?CsInSb?Cl?, and P/M-DMAPbCl?), in which the introduction of dimethylammonium (DMA) induces strong N?H???Cl hydrogen bonds, resulting in helical distortions within In/Pb?Cl octahedral frameworks and thereby generating structural chirality. Although Cs incorporation reduces overall crystallographic chirality, localized chiral luminescence remains due to persistent N?H???Cl hydrogen bonding. We propose employing inelastic neutron scattering (INS) to directly probe and clarify these interactions, aiming to establish a novel mechanism by which non-chiral organic cations regulate chiral structure, thus guiding the development of highly efficient chiral optical materials.
Principal Investigator: Dr Chunyong He
Experimenter: Dr Yong Zhang
Experimenter: Dr Shurong Yuan
Experimenter: Professor Andi Di
Local Contact: Dr Svemir Rudic
Experimenter: Mr Haibiao Zheng
Experimenter: Dr Bo Ma
DOI: 10.5286/ISIS.E.RB2520331
ISIS Experiment Number: RB2520331
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2520331-1 | TOSCA | 10 March 2029 | Download |
Publisher: STFC ISIS Neutron and Muon Source
Data format: RAW/Nexus
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Data Citation
The recommended format for citing this dataset in a research
publication is as:
[author], [date], [title], [publisher],
[doi]
For Example:
Dr Chunyong He et al; (2026): Mechanism Study of Chiral Optical Activity in Hydrogen-Bond Induced Lead-Free Perovskites with Lattice Distortion, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2520331
Data is released under the CC-BY-4.0 license.
