Fig. 2: Physical properties.

a 2D TAS image of optimal ternary blend. b The intensity profiles of the TAS spectra with varied time delays for optimal ternary blend. c The corresponding TAS kinetic lifetimes of binary PBOF: eC9 and optimal ternary PBOF: eC9: PC61BM blends. d EQEEL spectra for binary and ternary devices. e ECT determination for binary PBOF: eC9 device. f ECT determination for the optimal ternary device.