ISIS Neutron and Muon Source Data Journal

Pressure-induced phase transition in methylammonium lead iodide

Abstract: One key to the famous and remarkable photovoltaic properties of methylammonium lead iodide is its structural flexibility. This flexibility can be characterised by testing the structural response to applied pressure. We have previously performed an experiment on PEARL in which we demonstrated the existence of a new low-symmetry phase above about 0.3 GPa. This phase does not correspond to any known unit cell, but unfortunately the PEARL resolution was not sufficient to index it from scratch. For this reason, in this rapid access proposal we propose to measure this phase in a gas cell on GEM, taking advantage of the smaller background and higher resolution especially of the backscattering bank to characterise this new structure. Our results will be of significant interest to the very large hybrid halide perovskite community, and will form part of the PhD thesis of one of the proposers (JL).

Principal Investigator: Dr Anthony Phillips
Experimenter: Professor Martin Dove
Experimenter: Professor David Keen
Local Contact: Dr Ivan da Silva Gonzalez
Experimenter: Miss Jiaxun Liu
Experimenter: Dr Richard Dixey
Experimenter: Mr Guanqun Cai
Experimenter: Miss Bernet Meijer

DOI: 10.5286/ISIS.E.RB2000010

ISIS Experiment Number: RB2000010

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 Anthony Phillips et al; (2019): Pressure-induced phase transition in methylammonium lead iodide, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2000010

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