Figure 1.

Mechanochemical Synthesis of All-Inorganic Tin Halide Perovskites.

(A) Reaction scheme for the ball milling reaction to form all-inorganic tin perovskites using CsX and SnX₂ (X = Cl, Br, I). The three-ball symbol above the arrow represents the mechanochemical procedure. The powders were prepared in a N₂-filled glove box, sealed in air-tight vessels, and then milled for 60 min. The key advantages of performing such mechanochemical ball milling synthesis are highlighted in green.

(B) Photographs depicting the reagents before and after milling on 200-mg scales.

(C) Photograph of a 250-g scale reaction of the mixed halide perovskite CsSnBr_1.5Cl_1.5 after 10 h of milling.

See also Figures S1–S3 and S13.