Fig. 3: Coherent dynamics of blends.

a Kinetic process of the three blends, pumped at 700 nm and probed at 860 nm, normalized at around 100 fs. The charge separation process occurred before 100 fs, followed by the charge generation process. The oscillation signal of Ternary (H) as indicated by the arrow. b Corresponding oscillation signal. c Fourier transformed spectrum reveals the frequency of the oscillatory components at 365 cm⁻¹. d Raman spectra calculated at the B3LYP/6-31+G(d) level of theory for the neutral and charged CT conformer. e A zoomed version of the 2DPS peak shifts (contour at 90% of the maximum) for the D1:A1 and f Ternary (H) devices. The color indicates the time delay between the pump and the probe. g EQE of the two devices as a function of excitation energy, and the excitation spectrum of the laser. h Quantum beats observed at two selected positions in the 2DPS spectra of the Ternary (H) device and i the corresponding Fourier transforms.