Use the CIF file to simulate a theoretical powder XRD pattern. You can then compare this pattern against your experimental lab data to confirm phase purity.
Unlike simple table salt, the Formamidinium ion in the center of the FAPbI
Because computational modeling and structural visualization are vital for optimizing solar cell design, researchers rely heavily on a (Crystallographic Information File) to understand, simulate, and manipulate the atomic structure of FAPbI What is a CIF File? fapbi3 cif file
The cubic (or near-cubic) black phase. This is the photoactive phase used in solar cells because its bandgap (~1.48 eV) is nearly ideal for capturing sunlight.
is metastable at room temperature and tends to transition to the (hexagonal, yellow, non-perovskite). ResearchGate FAPbI3.cif - WMD-group/hybrid-perovskites - GitHub Use the CIF file to simulate a theoretical
Defines the symmetry operations of the crystal. Atomic Coordinates: The positions of the Pb²⁺, I⁻, and the FA⁺ (
): This is the black, photoactive perovskite phase. It features a cubic structure (space group Pm3m ) at high temperatures. It can change to a tetragonal or orthorhombic structure as it cools down. Delta Phase ( FAPbI3FAPbI sub 3 The cubic (or near-cubic) black phase
should look like. They can compare this simulated pattern to their experimental samples to verify which phase ( , or mixed) they have successfully synthesized in the lab.