Key parameters of two typical intercalation reactions to prepare hybrid inorganic

Key parameters of two typical intercalation reactions to prepare hybrid inorganic–organic perovskite films

Shi Biao^{1, 2, 3, 4}, Guo Sheng^{1, 2, 3, 4}, Wei Changchun^{1, 2, 3, 4}, Li Baozhang^{1, 2, 3, 4}, Ding Yi^{1, 2, 3, 4}, Li Yuelong^{1, 2, 3, 4}, Wan Qing⁵, Zhao Ying^{1, 2, 3, 4}, Zhang Xiaodan^{1, 2, 3, 4, †}

(color online) SEM images and absorption properties of the perovskite films and performances of the PSCs. SEM cross-sectional images of perovskite films with thicknesses of (a) 160 nm, (b) 300 nm, (c) 400 nm, and (d) 540 nm manufactured by reacting 85 nm, 150 nm, 200 nm, and 270 nm PbI₂ with 16 mg/mL, 27.5 mg/mL, 33 mg/mL, and 46.5 mg/mL MAI/IPA, respectively. (e) Absorption spectra of the perovskite films, and (f) J–V curves (FB-SC) of the PSCs under 1 sun illumination with different PbI₂ thicknesses matched with the optimal concentrations of MAI/IPA.