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. 2022 Jul 19;8(7):1008–1016. doi: 10.1021/acscentsci.2c00385

Figure 3.

Figure 3

Performance evaluation of FAPbI3-based films prepared from different intermediates and corresponding PSCs. Quality assessments of FAPbI3-based films by (a) XRD patterns, (b) I/Pb relative mole ratio on the perovskite surface from XPS, and (c) TRPL measurements. (d) J–V characteristics of PSCs. (e) Open-circuit voltage as a function of light intensity. The linear plots are fitted by the equation VOC = n(kBT/q) ln(light intensity) + A (n, ideal factor; kB, Boltzmann constant; T, absolute temperature; q, elementary charge; A, constant). (f) Mott–Schottky analysis of PSCs from different intermediate films.