Table 1.

The fitted results of recombination rate constants for thermally evaporated perovskite films with different Cs₄PbBr₆ concentrations.

Materials	k1 (s−1)	k2 (cm3s−1)	k3 (cm6s−1)
Cs/Pb = 1.56	7.14 × 108	9.34 × 10−10	1.83 × 10−27
Cs/Pb = 1.24	1.69 × 109	1.47 × 10−10	3.16 × 10−28

The k₁ is extracted from time-resolved PL under the low excitation fluence, and k₂, k₃ are obtained from the global fitting of recombination rates-carrier density curves.