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. 2019 Jul 1;9:9448. doi: 10.1038/s41598-019-45756-1

Figure 1.

Figure 1

(a) Schematic structure of the normal perovskite solar cells. (b) SEM image of the cross section of the normal perovskite devices. (c) Schematics of the energy diagram of the normal device components. (d) SEM image of the perovskite layer. (e) Topography image of the perovskite layer.