Fapbi3 Cif File -
The most accurate structural parameters often come directly from the seminal papers. The definitive structure was elucidated by researchers like M. Grätzel and colleagues.
The FAPbI₃ CIF file is an essential tool for researchers modeling perovskite solar cells, enabling atomistic simulations, XRD pattern calculations, and structure–property analysis. Whether you're performing DFT, molecular dynamics, or simply visualizing the 3D structure, having an accurate CIF is the first step toward understanding this high-performance photovoltaic material.
Formamidinium lead iodide ( FAPbI3cap F cap A cap P b cap I sub 3
) is a premier hybrid organic-inorganic perovskite (HOIP) favored for high-efficiency solar cells due to its near-ideal band gap of approximately
. Crystallographic Information Files (CIF) are the standard for modeling its structure, essential for both theoretical simulations and experimental X-ray diffraction (XRD) analysis. Structural Phases and Crystallography FAPbI3cap F cap A cap P b cap I sub 3
primarily exists in two major polymorphs at room temperature: the photoactive -phase (black) and the non-perovskite -phase (yellow).
-Phase (Cubic Perovskite): This is the desired phase for photovoltaics. It typically crystallizes in the
space group (No. 221). The structure consists of a corner-sharing PbI6cap P b cap I sub 6 octahedral framework with formamidinium ( FA+cap F cap A raised to the positive power
) cations occupying the 12-fold coordinated cuboctahedral cavities. -Phase (Hexagonal): At room temperature, the -phase is metastable and often transitions into the yellow fapbi3 cif file
-phase, which features face-sharing octahedra and is unsuitable for solar applications due to its wide band gap (~ Key CIF Parameters for FAPbI3cap F cap A cap P b cap I sub 3 Standard CIF data for the cubic phase at approximately typically includes: Lattice Constant ( ): Roughly Cell Volume: ~ FA+cap F cap A raised to the positive power Cation Orientation: The organic FA+cap F cap A raised to the positive power
) is dynamically disordered within the inorganic cage. CIF models often represent this via multiple occupancy sites or specific orientation minimizations, such as the fragment lying in the CIF Data Sources and Tools High-quality CIF files for FAPbI3cap F cap A cap P b cap I sub 3
can be accessed through academic repositories and open databases: Description Crystallography Open Database (COD) A standard repository for experimental crystal structures. Materials Project
Provides DFT-relaxed structures and computational CIFs for perovskite materials. GitHub (WMD-group)
Hosts specific FAPbI3 CIF files used in prominent hybrid perovskite research. Cambridge Structural Database (CSD) Essential for verified experimental single-crystal data. Visualization and Analysis To utilize a CIF file: FAPbI3.cif - WMD-group/hybrid-perovskites - GitHub
hybrid-perovskites/2014_cubic_halides_PBEsol/FAPbI3. cif at master · WMD-group/hybrid-perovskites · GitHub. FAPbI3_tetragonal&cubic - 科学数据银行
CIF files are used to store and exchange crystallographic data, including the results of X-ray crystallography experiments, in a structured and machine-readable way. These files contain detailed information about the crystal structure of a material, including the positions of atoms within the unit cell, lattice parameters, and other relevant crystallographic data.
The ".cif" extension is commonly associated with this file format. The most accurate structural parameters often come directly
If you're looking for features related to CIF files or how to work with them, here are a few points:
Content of a CIF File: A CIF file typically includes:
Validation and Checking: It's crucial to validate CIF files for correctness and consistency. Tools and databases, such as the Cambridge Structural Database (CSD) and the Inorganic Crystal Structure Database (ICSD), provide checks and references for crystal structures.
Applications: CIF files are essential in materials science, chemistry, and physics for tasks such as:
If you have a specific CIF file (like one named "fapbi3.cif") and are looking for help with its contents or how to use it, providing more details about the file or what you aim to achieve could help in giving a more precise response.
Formamidinium lead iodide (FAPbI₃) is a highly prized hybrid organic-inorganic perovskite material used in high-efficiency solar cells. A CIF file (Crystallographic Information File) for FAPbI3FAPbI sub 3
is the standardized digital text file that contains its exact 3D crystal structure, atomic coordinates, and symmetry. FAPbI3FAPbI sub 3
has multiple structures depending on temperature, a "full text" or complete overview of its CIF data requires understanding its distinct polymorphic phases. 🔬 Core Crystallographic Phases of FAPbI3FAPbI sub 3 To work with a FAPbI3FAPbI sub 3 The FAPbI₃ CIF file is an essential tool
CIF file, you must first determine which phase or polymorph you need for your simulation or X-ray diffraction (XRD) matching:
A CIF for FAPbI3 contains standardized sections. Key CIF data items include:
From the CIF coordinates, you can calculate:
If you have been searching for "fapbi3 cif file" without success, try the following refined strategies using open-access databases.
A CIF (Crystallographic Information File) is a standard text-based format used to describe crystal structures. It contains information such as:
The most scientifically plausible interpretation of "fapbi3" is FAPbI$_3$ (Formamidinium Lead Iodide).
Why the confusion? In academic shorthand, Formamidinium is often abbreviated as FA. However, in standard database queries, one must often search for the full chemical name or formula ($\textHC(NH_2)_2\textPbI_3$). Searching for "fapbi3" in a database might yield zero results because the database does not recognize "fapbi" as a valid token, whereas "FAPbI3" (with correct capitalization) or "Formamidinium lead iodide" would.
If you are training a neural network potential (e.g., MACE, NequIP), you need thousands of distorted CIFs. Use the base fapbi3.cif to generate a supercell, then perturb it.