Figure 1. Photoinduced structural and compositional changes in perovskite nanomaterials (IMAGE)

Institute for Basic Science

Figure 1. Photoinduced structural and compositional changes in perovskite nanomaterials

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The top panel illustrates halide substitution in cesium lead halide (CsPb(Br/Cl)₃) nanocrystals, where photoirradiation induces exchange between bromide and chloride ions, altering the Br/Cl ratio. The bottom panel shows the photoinduced aggregation of colloidally dispersed 2-monolayer CsPbBr₃ nanoplatelets, which evolve into larger agglomerates under light. The AI-TA technique was used to investigate how these transformations influence the ultrafast transient absorption spectra and charge carrier dynamics.

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Institute for Basic Science

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