Crystallization of FAPbI3: Polytypes and stacking faults

Ahlawat, Paramvir

doi:10.1063/5.0165285

Cited by 1 publication

(1 citation statement)

References 92 publications

(94 reference statements)

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“…In 2020 Rathnayake et al 42 extended the polarizable AMOEBA force field to the study of CsPbI 3 and MAPbI 3 perovskites. These models are expected to outperform nonpolarizable models in terms of accuracy and predictive capabilities, yet applications 43 remain limited because of the model complexity as well as the higher computational cost.…”

Section: Introductionmentioning

confidence: 99%

Many-Body MYP2 Force-Field: Toward the Crystal Growth Modeling of Hybrid Perovskites

Mattoni,

Argiolas,

Cozzolino

et al. 2024

J. Chem. Theory Comput.

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Hybrid perovskites are well-known for their optoelectronic and photovoltaic properties. Molecular dynamics simulations allow the study of these soft and ionic crystals by including dynamical effects (e.g., molecular rotations, octahedra tilting, ionic diffusion and hysteresis), yet the high computational cost restricts the use of accurate ab initio forces for bulk or small atomic systems. Hence, great interest exists in the development of classical force-fields for hybrid perovskites of low and linear scaling computational cost, via both empirical methods and machine-learning. This work aims at extending the transferability of our MYP0 model, which has been successfully tailored to methylammonium lead iodide (MAPI) and applied to the study of molecular rotations, vibrations, diffusion of defects, and many other properties. The extended model, named MYP2, improves the description of inorganic or hybrid fragments and the processes of crystal formation while preserving a good description of bulk properties. More importantly, it allows for the direct simulation of the crystal growth of cubic MAPI from deposition of PbI and MAI precursors on the surfaces. Our findings pave the way toward classical force-fields able to model the microstructure evolution of hybrid perovskites and the crystalline synthesis from deposition in vacuo.

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Section: Introductionmentioning

confidence: 99%