Fig. 5: Excitonic properties at higher excitation energies.
From: Directed exciton transport highways in organic semiconductors
a Simulated EELS spectra at high excitation energy due to non-TD excitons (solid lines). P3 and P4 emerge due to TQ interaction and TO interaction, respectively (see main text). The position of the TD excitons at lower energy is indicated by a shaded gray area. b and c Isosurface plot of TQ density of the involved transitions proves dominating quadrupolar character with negative ends and positive center. The spacing between molecules has been increased for clarity of the figure. d and e Isosurface plot of TO density of the 11th molecular exciton.
