Table 2 Calculated parameters of average crystallite size, d-spacing, and lattice strain of perovskite films, obtained from the Debye Scherrer and Williamson-Hall equations.
From: Characterization of Bi-doped FAPbI3 perovskite films investigated by X-ray absorption spectroscopy
Sample | Peak position (2θ) | FWHM (β) | Crystallite size (nm) (Debye–Scherrer equation) | d-spacing (nm) | Lattice strain (\({\varvec{\varepsilon}}\)) (Debye Scherrer equation) | Crystallite size (nm) (Williamson-Hall plot) | Lattice strain (\({\varvec{\varepsilon}}\)) (Williamson-Hall plot) |
|---|---|---|---|---|---|---|---|
FAPbI3 | 13.98 | 0.125 | 66.73 | 0.63 | 0.00446 | 72.19 | 0.0007 |
0.5Bi- FAPbI3 | 13.97 | 0.149 | 55.96 | 0.63 | 0.00532 | 74.92 | 0.0013 |
1Bi- FAPbI3 | 13.98 | 0.124 | 67.21 | 0.63 | 0.00442 | 82.5 | 0.0015 |
1.5Bi- FAPbI3 | 13.97 | 0.154 | 54.30 | 0.63 | 0.00548 | 96.25 | 0.002 |
2Bi- FAPbI3 | 13.97 | 0.115 | 72.85 | 0.63 | 0.00409 | 135.88 | 0.0018 |
