Research / 2021 / Article / Fig 2

Research Article

Stable and Efficient Red Perovskite Light-Emitting Diodes Based on Ca2+-Doped CsPbI3 Nanocrystals

Figure 2

(a) HAADF-STEM images of Ca2+-doped CsPbI3 NCs and the corresponding elemental mapping images of Cs (b), Pb (c), Ca (d), I (e), and merged image (f). (b–f) .