The hexagonal yellow phase. This is thermodynamically stable at room temperature but electronically inactive, making it the "enemy" of high-efficiency solar cells.
Finding a reliable Crystallographic Information File (CIF) Formamidinium Lead Iodide (FAPbI₃) fapbi3 cif file
loop_ _space_group_symop_operation_xyz 'x, y, z' '-x, -y, z' '-x, y, -z' 'x, -y, -z' 'z, x, y' ... The hexagonal yellow phase
You can download verified structural files from these major databases: You can download verified structural files from these
The CIF (Crystallographic Information File) file is a standard format used to store and exchange crystallographic data. In the field of materials science, CIF files play a crucial role in the representation and sharing of crystal structure data. One such CIF file is the FAPBI3 CIF file, which has garnered significant attention in recent years. This essay aims to provide an overview of the FAPBI3 CIF file, its significance, and its applications.
Unlike the simpler cesium cation, the formamidinium (FA) molecule is a large, non-spherical organic cation. In a standard cubic CIF, the FA molecule often appears because it rotates rapidly within the lead-iodide "cage". This requires researchers to choose between a "time-averaged" CIF (useful for standard XRD refinement) and a "frozen" or relaxed structure (often derived from DFT calculations ) for modeling electronic band structures. Strategic Importance FAPbI3.cif - WMD-group/hybrid-perovskites - GitHub
How to run DFT calculations on lower-end PCs? (Free and Fast)