ISIS Neutron and Muon Source Data Journal

Disordered vibrational phenomena in triple cation 3D perovskites

Abstract: Halide perovskites are of great interest as materials for next generation solar power and other semi-conductor uses. The present direction of research is moving away from "standard" formulations of halide perovskites to more "exotic" materials. We have interest in a "triple-cation" formulation containing a mixture of FA, MA, and Cs as the cation. For their inclusion into devices the thermal, and hence vibrational, properties are of crucial importance. We have started our study by looking at the surface vibrational modes using helium-3 spin echo. We would like to extend the study to the bulk vibrational modes. The current proposal is to study the samples in powder form to supplement the helium-3 spin echo measurements, and provide a test case for potential future measurements on single crystal samples. We have two samples, the triple Cation FA0.85MA0.1Cs0.05Pb(I0.85Br0.15)3, and then also the more conventional FAPbBr3 for comparison.

Principal Investigator: Mr Aleksandar Radic
Experimenter: Dr Sam Stranks
Experimenter: Dr Sam Lambrick
Experimenter: Mr Xian Wei Chua
Experimenter: Dr Akshay Rao
Experimenter: Professor Sir Boyao Liu
Local Contact: Dr Duc Le

DOI: 10.5286/ISIS.E.RB2590271

ISIS Experiment Number: RB2590271

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:
Mr Aleksandar Radic et al; (2025): Disordered vibrational phenomena in triple cation 3D perovskites, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2590271

Data is released under the CC-BY-4.0 license.