Fig. 6: Polarized reflectivity of mixed-stack complexes.
From: Orbital hybridization of donor and acceptor to enhance the conductivity of mixed-stack complexes

a Spectra of mixed-stack complexes obtained in the electric field of light parallel to the π-stacking direction. Bars indicate the top of the peaks. The spectrum of the relatively thin single-crystal 2O–F4 exhibits stripe-pattern signals in the low-energy region due to interference from the backside (the raw data is shown in Supplementary Fig. 34a), and thus this part of the spectrum was deleted for clarity. b Temperature-dependent reflectivity of 2S–F4 in the electric field of light parallel (//) and perpendicular (⊥) to the π-stacking directions for the low-energy region.