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. 2017 Aug 4;8:200. doi: 10.1038/s41467-017-00284-2

Fig. 4.

Fig. 4

Halide phase segregation versus photostability. Time evolution of CsPb(I0.5Br0.5)3 a thin film and b nanocrystal-based film emission spectra (PL, photoluminescence) under 405 nm continuous wave (CW) excitation (I exc = 60 mW cm−2). c CsPb(I0.5Br0.5)3 thin film and nanocrystal-based film emission peak position during illumination. d Photostability phase diagram of MAPb(I1−xBrx)3 (MA = CH3NH3 +) obtained from Eq. (5)