Fig. 2: Transient absorption spectra measurements.
From: Tracking carrier and exciton dynamics in mixed-cation lead mixed-halide perovskite thin films
a Normalized transient absorption spectra with fluence of ~ 83 μJ/cm2 under 400-nm pump. Red solid lines are the Maxwell-Boltzmann fit curves by using Eq. (4). b Extracted carrier temperatures under 400-nm at different pump fluences. c Normalized transient absorption spectra with fluence of ~83 μJ/cm2 under 770-nm pump. d Extracted carrier temperatures under 770-nm pump at different pump fluences. The horizontal line marks the temperature of 294 K. Errors of Te are standard error that is determined by calculating the 95% confidence interval, based on residual values and Jacobian matrix obtained from the fits to Eq. (4).
