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From: Organic-inorganic hybrid quasi-2D perovskites incorporated with fluorinated additives for efficient and stable four-terminal tandem solar cells

Organic-inorganic hybrid quasi-2D perovskites incorporated with fluorinated additives for efficient and stable four-terminal tandem solar cells

Figure 1. Structural and compositional analyzes of as-prepared perovskite films. (A) Crystalline structure of (3-TFMBA)₂(Cs_0.17FA_0.83)_n-1Pb_n(I_0.83Br_0.17)_3n-1I₂ perovskite. (B) XRD patterns (peaks labeled with “#” are derived from FTO). (C) Top-view SEM image of quasi-2D perovskite film with n = 40. (D) Survey XPS spectra and (E-I) corresponding high-resolution XPS spectra at (E) Br 3d, (F) I 3d, (G) Pb 4f, (H) Cs 3d and (I) F 1s regions of quasi-2D perovskite films with different n values.

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Committee on Publication Ethics

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