Fig. 3: Effect of atmosphere on phase segregation of MAPb(BrxI1-x)3 (x = 0.905) single crystal. | Communications Materials

Fig. 3: Effect of atmosphere on phase segregation of MAPb(BrxI1-x)3 (x = 0.905) single crystal.

From: Energy-band gradient structure originated from longitudinal phase segregation of mixed halide perovskite single crystal

Fig. 3

a, b PL evolution in air and N2. c, d Variance of emission intensity, position, and FWHM (full width at half maxima) of the PL feature around 690 nm with illumination time. The dots in (c) are experimental data extracted from PL spectra, and solid lines on top of the dots are from fitting. The fluctuation of PL position before reaching the plateau is highlighted by the blue circle in (d).

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