(a) La Mer model of PQD growth guidance in IW and UFTDC cooling processes [117]. Copyright 2021, American Chemical Society. (b) Growth schematic for ultrasmall CsPbBr3 QDs and large CsPbBr3 nanocubes [118]. Copyright 2021, Wiley-VCH. (c) Schematic of the PLQY change after Sb3+ doping [129]. Copyright 2019, American Chemical Society. (d) EL spectra (straight line) and PL spectra (dashed line) of CsPbX3 QDs [131]. Copyright 2015, Wiley-VCH. (e) Normalized PL spectra of CsPbCl3−xBrx (x = 0.0–2.5) QDs [132]. Copyright 2021, Elsevier B.V. (f) Illustration of Cl− vacancy-induced Coulomb trap site formation, electron trapping, and self-assembly of organic thiocyanate (RSCN) on the defect sites in MHP [133]. Copyright 2020, American Chemical Society.