Figure 3
Cs1−xFAxPbBr3 QDs: (a,b) Type A, (c,d) Type B, and (e,f) Type C. (a,c, and e) TEM micrographs of the representative Cs1−xFAxPbBr3 QDs. Insets show the size distribution of QDs. (b,d, and f) HR-TEM micrographs showing the lattice spacing of corresponding Type A, B and C Cs1−xFAxPbBr3 QDs. Insets are HR-TEM micrographs of Cs1−xFAxPbBr3 QDs along the [001] zone axis (top) and Fast-Fourier Transform (FET) patterns (bottom) indicating the cubic structure of Cs1−xFAxPbBr3 (blue, red, and yellow balls represent Cs, Pb, and Br ions, respectively). (g–l) Surface analyses of Cs1−xFAxPbBr3 QD films on b-PEI/ZnO/ITO obtained by (g–i) FE-SEM and (j–l) AFM (5 × 5 μm2): (g,j) Type A, (h,k) Type B, and (i,l) Type C.
