The harder & heavier, the better: isotope effects, distortion pathways & stability enhancement in MAPbI3 under high pressure
Following our pilot study on the vibrational dynamics of hydrogenous MAPbI3 across variable pressure-temperature conditions and recent on-site technical developments by Ivanov et al. we request the set of measurements on IN1-LAGRANGE using an improved compact high-pressure setup. The experiment is aimed at exploring the high-pressure boundaries of the low-temperature phase of hydrogenous (CH3NH3PbI3) and deuterated (CH3ND3PbI3) specimens. The present work is motivated by the pronounced isotope effects recently reported for deuterated species, resulting in colossal stability enhancement and the modulation of charge-carrier lifetimes upon pressurization. These effects are of direct relevance to the processing of these materials, as part of wider efforts aimed at developing structurally and operationally stable solar-cell devices. The proposed experiment on IN1-LAGRANGE will shed light on hitherto-unexplored mechanisms behind stabilization thanks to superb access to the librational dynamics of methylammonium cations in MAPbI3 in the spectral range below 40 meV.
The data is currently only available to download if you are a member of the proposal team.
The recommended format for citing this dataset in a research publication is in the following format:
DRUZBICKI Kacper; FELIX FERNANDEZ-ALONSO; Mattia Gaboardi; GONZALEZ Miguel Angel; IVANOV Alexandre; JIMENEZ RUIZ Monica and MARIN VILLA Pelayo. (2023). The harder & heavier, the better: isotope effects, distortion pathways & stability enhancement in MAPbI3 under high pressure. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.7-01-571
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