Fig. 3: Optical characterization of perovskite films deposited on SAMs.

a The absorption spectra, b PL spectra, c TRPL spectra of perovskite film on the control and target SAM. d, e TA spectra of perovskite films deposited on the control and target SAM. f, g The different delay times TA spectra of perovskite films based on the control and target SAM. h, i PL mapping images of the control and target perovskite film.