[6,6]-Phenyl-C71-butyric acid methyl ester (PC70BM). A high quality PC70BM for use with next generation materials for OPVs where additional absorption is required in the blue part of the spectrum.
bis[C60]PCBM : PCBM bisaducts to increase the open circuit voltage of solar cells by approximately 0.1 V due to the higher lying LUMO level . Also used in crystallisation studies especially when comparing polymer-fullerene packing [2,3].
A fullerene designed to increase the open circuit of P3HT solar cells by around 0.17 eV due to the higher lying LUMO level in order to significantly increase the power conversion efficiency [1,2].