Fig. 2.

Synthesis of CH₃NH₃PbBr₃ QDs. Schematic illustration of the reaction system (a) and precursors (b). c Optical image of colloidal CH₃NH₃PbBr₃ solution. d Schematic illustration for the formation of the CH₃NH₃PbBr₃ QDs.

Adapted image reproduced with permission of Ref. [27, 34]