ISIS Neutron and Muon Source Data Journal

Quasi-elastic neutron study of the organic cation dynamics in the halide perovskite CH3NH3PbI3 for PV applications

Abstract: Solar cells based on a layer of halide perovskite have recently seen rapid increases in efficiency, with certified values in excess of 20%. The prototypical material of this class is the methyl-ammonium-containing halide perovskite CH3NH3PbI3. Very recently, the phase transitions and dynamic disorder of this structure, which has been extensively studied since the eighties, have come under renewed scrutiny, since they appear to be related to key PV performance parameters. Here, we propose to study for the first time the dynamics of the CH3NH3 organic molecule via quasi-elastic neutron scattering, on OSIRIS. This will allow the detailed study of the CH3NH3 reorientation and its effect on the phase transitions and symmetry of the low temperature phases. Additionally we propose the measurement of a fully deuterated sample to investigate dynamical correlations between CH3NH3 molecules.

Principal Investigator: Professor Paolo Radaelli
Local Contact: Dr Jeff Armstrong
Experimenter: Dr Amir Abbas Haghighirad
Experimenter: Professor Henry Snaith
Experimenter: Dr Roger Johnson
Experimenter: Mr James Beilsten-Edmands
Experimenter: Professor Felix Fernandez-Alonso

DOI: 10.5286/ISIS.E.RB1520208

ISIS Experiment Number: RB1520208

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:
Professor Paolo Radaelli et al; (2015): Quasi-elastic neutron study of the organic cation dynamics in the halide perovskite CH3NH3PbI3 for PV applications, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1520208

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