fig5

Figure 5. (A) Schematic diagram of in situ Yb-doped preparation of CsPbI₃ QDs. This figure is quoted with permission from Ref.^[114], Copyright © 2020 The Royal Society of Chemistry; (B) SEM images of CsPbI₂Br and CsPb_0.95Sr_0.05I₂Br film. This figure is quoted with permission from Ref.^[119], Copyright © 2017 American Chemical Society; (C) Schematic illustration of iodine defect state control of CsPbI₃ QDs by ZnI₂. This figure is quoted with permission from Ref.^[124], Copyright © 2020 Wiley-VCH; (D) The SEM images of CsPbIBr₂ and CsPb_0.995Mn_0.005I_1.01Br_1.99 films. All the scale bars are 1 µm. This figure is quoted with permission from Ref.^[125], Copyright © 2018 Wiley-VCH. QDs: Quantum dots; SEM: scanning electron microscopy.