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Rotational Dynamics of Organic Cations in Formamidinium Lead Iodide Perovskites

Journal of Physical Chemistry Letters (2023) 14(11) 2784-2791
DOI: 10.1021/acs.jpclett.3c00185
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Abstract

We report results from quasi-elastic neutron scattering studies on the rotational dynamics of formamidinium (HC[NH2]2+, FA) and methylammonium (CH3NH3+, MA) cations in FA1-xMAxPbI3 with x = 0 and 0.4 and compare it to the dynamics in MAPbI3. For FAPbI3, the FA cation dynamics evolve from nearly isotropic rotations in the high-temperature (T > 285 K) cubic phase through reorientations between preferred orientations in the intermediate-temperature tetragonal phase (140 K

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CITATION STYLE

APA

Lavén, R., Koza, M. M., Malavasi, L., Perrichon, A., Appel, M., & Karlsson, M. (2023). Rotational Dynamics of Organic Cations in Formamidinium Lead Iodide Perovskites. Journal of Physical Chemistry Letters, 14(11), 2784–2791. https://doi.org/10.1021/acs.jpclett.3c00185

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