Alexander B. Sieval, Neil D. Treat, Desirée Rozema, Jan C. Hummelen and Natalie Stingelin
Chem. Commun., 2015,51, 8126-8129
DOI:
10.1039/C5CC01642H,
Communication
A series of new, easily synthesized C60–fullerene derivatives is introduced that allow for optimization of the interactions between rr-P3HT and the fullerene by systematic variation of the size of the ester group. Two compounds gave overall cell efficiencies of 4.8%, clearly outperforming [60]PCBM which gives 4.3% under identical conditions.