Fig. 13: Time-resolved Kerr rotation for MAPbI3 perovskite system.
From: Advanced spectroscopic techniques for characterizing defects in perovskite solar cells

a TRKR signal of MAPbI3 crystal at a pump-power of 2 mW and Bv = 0.5 T (blue) contributed by electron (red) and hole (green) oscillating components. b FFT spectrum of the TRKR signal distinguishing the oscillating components in the TRKR signal. Reproduced with permission from ref. 80, copyright (American Chemical Society, 2022). c TRKR signal of FA0.9Cs0.1PbI2.8Br0.2 crystal at \({{{{\bf{B}}}}}_{{{{\boldsymbol{\perp }}}}}\) = 100 mT (black) contributed by electron (red) and hole (blue) oscillating components. d FFT spectrum of the TRKR signal. Reproduced with permission from ref. 81, copyright (Wiley-VCH GmbH, 2021).