Fig. 2: The evolution of CsPbBr3 NCs and the pore structures of MS with temperature increasing.

TEM images of water washed CsPbBr3–SiO2 at different calcination temperatures: a CsPbBr3–SiO2–400, b CsPbBr3–SiO2–500, c CsPbBr3–SiO2–600, d CsPbBr3–SiO2–700, e CsPbBr3–SiO2–800, f CsPbBr3–SiO2–900. g Small-angle XRD patterns of original MS and CsPbBr3–SiO2. h Surface area of original MS and CsPbBr3–SiO2 (CsBr/PbBr2: MS = 1:3) calculated with BET method.