Fig. 5: Hole transfer dynamics.

Color plot of TA spectra of a neat BTP-S9 film and b PM6:BTP-S9 blend film under 750 nm excitation. c Hole transfer kinetics in four blend films. d Comparisons of τ1 and τ2 of different blends.
Color plot of TA spectra of a neat BTP-S9 film and b PM6:BTP-S9 blend film under 750 nm excitation. c Hole transfer kinetics in four blend films. d Comparisons of τ1 and τ2 of different blends.