Fig. 5: Interphase charge transfer and recombination processes. | Nature Communications

Fig. 5: Interphase charge transfer and recombination processes.

From: Implementing an intermittent spin-coating strategy to enable bottom-up crystallization in layered halide perovskites

Fig. 5

a TA spectrograms of PEA2MA3Pb4I13 thin films fabricated with various ISC times. The dashed vertical lines set the absorption borders of n < 4, n = 4, quasi-2D and quasi-3D phases. b SVD fitting profiles symbolizing the charge transfer from n < 4 to quasi-3D (black) and the carrier recombination processes in n = 4 (red), quasi-2D (blue) and quasi-3D (olive) phases. c Derived lifetime in n = 4 phase (red dotted line) and carrier transfer time from n < 4 to quasi-3D phases (black dotted line) and d relative phase contents in percentage upon photo-excitation.

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