Fig. 4: Surface morphology and device architecture. | Communications Materials

Fig. 4: Surface morphology and device architecture.

From: Moisture tolerant solar cells by encapsulating 3D perovskite with long-chain alkylammonium cation-based 2D perovskite

Fig. 4

Scanning electron microscopy (SEM) images of (a, b) pure 3D and (c, d) C18 perovskite-coated 3D perovskite film, respectively. Contact angle made by a water droplet on the surface of thin films of (e) pure 3D perovskites and (f) C14-, (g) C16-, (h) C18-coated 3D perovskite measured after stabilizing the water droplet for 10 s. Cross-sectional SEM images of (i) pure 3D and (j) 3D@2D PSCs.

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