Figure 5
From: Colloidal lead halide perovskite nanocrystals: synthesis, optical properties and applications
(a) Schematics of possible anion-exchange raeactions within the crystal structure of CsPbX3 crystal lattice, with indication of suitable reagents. Reproduced from Nedelcu et al.68 (b) Different routes and precursors for CsPbX3 (X=Cl, Br, I) ion exchange. Reproduced from Akkerman et al.69 (c) Photographs of ion-exchanged, mixed-halide MAPbBr3-xClx and MAPbBr3-xIx NCs under room light. (d) UV-visible and PL spectra of MAPbBr3-xClx and MAPbBr3-xIx NC films. Reproduced from Jang et al.70
