ISIS Neutron and Muon Source Data Journal

Light induced structural changes in hybrid lead-halide perovskites CH3NH3Pb(IxBr1-x)3

Abstract: A controlled investigation of light-induced changes in hybrid perovskites is required to achieve stable operation of tandem solar cells and colour-tuneable light-emitting diodes. Recent reports have observed light-induced shifts in the optical bandgap under illumination with visible light, for which the origin is not understood, but thought to be partially due to halide ion migration. We propose to use muon spectroscopy to explore changes in the local structure of the lead-halide pervoskites, CH3NH3Pb(IxBr1-x)3 on illumination. Experiments will focus on samples continuously irradiated and compare the results with those made in dark conditions. Temperature dependent measurements will allow for the carrier lifetime and diffusion rates to be calculated. Preliminary measurements exploring the dynamics of the structural change will also be explored.

Principal Investigator: Professor Sian Dutton
Experimenter: Mr Tim van de Goor
Experimenter: Professor Alan Drew
Experimenter: Dr James Lord
Experimenter: Dr Felix Deschler
Experimenter: Dr Koji Yokoyama
Experimenter: Miss Jingliang Miao

DOI: 10.5286/ISIS.E.RB1720230

ISIS Experiment Number: RB1720230

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 Sian Dutton et al; (2017): Light induced structural changes in hybrid lead-halide perovskites CH3NH3Pb(IxBr1-x)3, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1720230

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