Fig. 3: Excited-state kinetics revealed by transient absorption spectroscopy.

a Kinetic traces probing at 633 nm for the GSB and b TA traces of the five blends probed at 990 nm of PM6:BTP-DC11, PM6:BTP-DTBO, PM6:BTP-DBO, and PM6:BTP-C11-TBO and PM6:BTP-BO-TBO blend films. c Schematic of the behaviors of exciton and charge carriers.