fig8

Figure 8. Solid-state synthesis of perovskites and powder preparation by ball milling. (A) Schematic illustration of various solid-state synthesis methods for perovskites; (B) Schematic mechanism of the formation of Cs₄PbBr₆ and CsPbBr₃; (C) Comparison of PLQY values of three synthesized powders with those of perovskite nanocrystals prepared by the same method^[130]. Copyright 2022 Nature; (D) PL spectra of Cs₄PbX₆ synthesized by ball milling with different halides; (E) Schematic illustration of the single-source deposition process; (F) Optical image of Cs₄PbX₆ films fabricated by single-source TE^[131]. Copyright 2023 American Chemistry Society.