Key points are not available for this paper at this time.
The solution phase n-doping of C60 and PCBM with tetrabutylammonium fluoride is shown to occur via an initial chemical reaction followed by electron transfer to a second fullerene molecule. The formation of ionic and radical intermediate species has significant implications for the use of ionically functionalized materials as electron-selective interface layers in OPVs.
Weber et al. (Thu,) studied this question.