Fig. 2
From: Excited-state vibrational dynamics toward the polaron in methylammonium lead iodide perovskite
FFT spectra of Fig. 1. a Contour plot of FFT spectra measured in the entire probe pulse range for MAPbI3 perovskite (830–940 nm). b, c FFT and LPSVD spectra measured at 840–855 nm (blue) and at 885–900 nm (red). d Display of the relative phases of the three principal LPSVD peaks fit on the red and blue sides of the band
