Fig. 2
Copyright 2021, Elsevier. e Schematic of in-situ fabrication of SiO2 encapsulated CsPbBr3–PSZ composites. f TEM image and EDS elemental mapping of CsPbBr3–PSZ composites. Scale bar: 100 nm. g XPS spectra of CsPbBr3–PSZ composites. Reproduced with permission from [62]. Copyright 2023, American Chemical Society. h Comparison of the dispersion stability from the PL spectra and real images of bare-QDs and QDs@SiO2 core/shell samples in a polar solvent (acetone) environment. Thermal stability: i PL intensity as a function of the time of heat exposure (at 60 °C). Reproduced with permission from [63]. Copyright 2021, Elsevier. j TEM images of A-CsPbBr3@SiO2 QDs with APTES/OAm volume ratio of 1.3. k Chemical resistance of pristine CsPbBr3 QDs and A-CsPbBr3/@SiO2 QDs with APTES/OAm volume ratios of 0.4, 1.3, and 2.5 in water. Reproduced with permission from [65]. Copyright 2021, American Chemical Society
Anion exchange processes between PQDs, in-situ fabrication of core–shell PQDs and characterization, structural stabilities of core–shell PQDs under external stimuli. a Schematic of anion exchange process between core–only PQDs with different halide ions. b PL spectra of core–only CsPbBr3 QDs solution, core–only CsPbI3 QDs solution, and their mixed solution after mixing for 2 h. c PL spectra of core–shell CsPbBr3@SiO2 QDs solution, core–only CsPbI3 QDs solution, and their mixed solution after mixing for 2 h. d Schematic of preventing the anion exchange process between core–shell CsPbBr3@SiO2 QDs and core–only CsPbI3 QDs. Reproduced with permission from [61].