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. 2020 May 4;7(13):1902448. doi: 10.1002/advs.201902448

Figure 5.

Figure 5

a) popcorn NPs embedded in the mesoporous TiO2 framework. Reproduced with permission.[ 50 ] Copyright 2020, Royal Society of Chemistry. b) SEM images of popcorn NPs within the mesoporous TiO2 framework: (a) top view, secondary electron image, (b) top view, backscattered electron image, (c) cross‐section view, secondary electron image, (d) cross‐section view, backscattered electron image. SEM images of perovskite on mesoporous TiO2, (e) secondary electron image, (f) backscattered electron image. Reproduced with permission.[ 50 ] Copyright 2020, Royal Society of Chemistry and c) (a) optical absorption of perovskite film on a mesoporous TiO2 framework with and without popcorn NPs, (b) J–V curves of the best‐performance perovskite device with and without popcorn NPs. Reproduced with permission.[ 50 ] Copyright 2020, Royal Society of Chemistry.