Fapbi3 Cif File -
: A massive collection of experimental crystal structures. Search for "FAPbI3" or the elements to find entries like the cubic -phase or hexagonal -phase at the COD Search Page .
) is a premier material in next-generation photovoltaics. Researchers use Crystallographic Information Files (CIF) to model, simulate, and understand its crystal structure. This guide explains how to find, interpret, and use FAPbI3FAPbI sub 3 CIF files for solar cell research. What is a CIF File?
FAPbI₃ exists in several distinct crystal phases, and the stability of its photoactive form is a central challenge in the field.
To proceed:
is structurally dynamic, CIF files for this phase often employ disordered models for the organic molecule at the center of the cage. 2. The Hexagonal -Phase (Room Temperature) Lattice Parameters: fapbi3 cif file
If you're looking for features related to CIF files or how to work with them, here are a few points:
) that is thermodynamically stable at room temperature but photo-inactive.
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.
Researchers use this file with simulation software like , Quantum Espresso , VASP , or Materials Studio to visualize the structure, run Density Functional Theory (DFT) calculations, or compare simulated XRD patterns with experimental data. 2. Key Phases: (Black) vs. It is crucial to understand that FAPbI3FAPbI sub 3 : A massive collection of experimental crystal structures
Once downloaded, the CIF file serves as the starting point for various computational and analytical workflows:
is notorious for its polymorphism, specifically the tendency to transition from the desired black, photoactive cubic phase ( FAPbI3FAPbI sub 3 ) to a non-photoactive yellow phase ( FAPbI3FAPbI sub 3 ) at room temperature. Understanding and manipulating the FAPbI3FAPbI sub 3
The availability of accurate CIF files enables several high-level research applications.
Hosts specific FAPbI3 CIF files used in prominent hybrid perovskite research. Essential for verified experimental single-crystal data. Visualization and Analysis To utilize a CIF file: FAPbI3.cif - WMD-group/hybrid-perovskites - GitHub FAPbI₃ exists in several distinct crystal phases, and
can distort from cubic to tetragonal or trigonal at room temperature, even if it remains in the black perovskite phase.
eV, making it the "Goldilocks" material for single-junction solar cells. Quick Usage Tips
contains the essential geometric data to describe its crystal structure, including lattice parameters, space group, and atomic coordinates. cap F cap A cap P b cap I sub 3 Phases in CIF Data -Phase (Cubic): The photoactive "black phase" used in solar cells. Space Group: in some computational models). Lattice Constant: at room temperature. Characteristics: High symmetry with the cap F cap A raised to the positive power cation at the center of cap P b cap I sub 6 octahedra. -Phase (Hexagonal): The non-photoactive "yellow phase" that cap F cap A cap P b cap I sub 3 often degrades into at room temperature. Space Group: Structure: Non-perovskite arrangement where cap P b cap I sub 6 octahedra share faces instead of corners. ACS Publications Key Components of an cap F cap A cap P b cap I sub 3 A standard CIF for the cubic phase typically includes: Lattice Parameters: Defining the unit cell dimensions ( ) and angles ( Symmetry Information:
