A comparison with the neutral OSC oligomer and its cation shows that the cation also features two peaks with similar oscillator strengths in a similar wavelength range as shown in Figure (b). However, the spectral peaks of the cation are red-shifted compared to the complex. The spectral separation between the P1 and P2 peak is also larger in the cation than in the complex. In the calculated range, the neutral OSC oligomer features only one large peak which is not present in the complex or the cation. A smaller peak at 1676 nm is only present in the spectrum of the complex and corresponds to a charge transfer excitation from the dopant to the OSC oligomer I as shown in Figure (e). The corresponding excitation for the OSC oligomer II is found at 1070 nm but with the larger spatial separation of NTOs has a very small oscillator as shown in Figure (f).