Fig. 2: Investigation of perovskite phase homogeneity on textured silicon substrates and its impacts on carrier transfer. | Nature Communications

Fig. 2: Investigation of perovskite phase homogeneity on textured silicon substrates and its impacts on carrier transfer.

From: Flexible perovskite/silicon monolithic tandem solar cells approaching 30% efficiency

Fig. 2

a, b High-resolution TEM images collected from the corresponding squares of a control and b target perovskite (Perov.) film, respectively. c PL emissions of 20 points from the top and bottom surface, respectively. d Calculated formation energies for perovskites. e Real-time in situ CLSM. f Direct observation of PL quenching of control and target films by the extraction effect of HTL. g 3D c-AFM images (5 × 5 μm, electrical current) of the samples with a structure of c-Si/ITO/NiOx/2PACz/Perov./C60. h Schematics for the band alignment of perovskite film.

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