Fig. 3: The luminescent mechanism of Br- and Sn-doped perovskites. | Nature Communications

Fig. 3: The luminescent mechanism of Br- and Sn-doped perovskites.

From: Full-color, time-valve controllable and Janus-type long-persistent luminescence from all-inorganic halide perovskites

Fig. 3

PL mechanism and transition electronic energy level diagram of a Br−-doped and b Sn2+-doped CsCdCl3 perovskites. S-T splitting: singlet–triplet-splitting. STEs: self-trapped excitons. D3d and C3v refer to D3d and C3v symmetry. Deep refers to deep traps. Thermometers imply that thermodynamics overcomes the energy barrier.

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