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International Journal of Photoenergy
Volume 2014, Article ID 373497, 10 pages
Research Article

Novel Terthiophene-Substituted Fullerene Derivatives as Easily Accessible Acceptor Molecules for Bulk-Heterojunction Polymer Solar Cells

1Department of Chemistry, University of Milan, UdR dell’INSTM, Via Golgi 19, 20133 Milan, Italy
2Research Center for Non-Conventional Energies,“Istituto Eni Donegani,” Eni S.p.A., Via Fauser 4, 28100 Novara, Italy

Received 26 March 2014; Accepted 8 June 2014; Published 10 July 2014

Academic Editor: Przemyslaw Rupnowski

Copyright © 2014 Filippo Nisic et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Five fulleropyrrolidines and methanofullerenes, bearing one or two terthiophene moieties, have been prepared in a convenient way and well characterized. These novel fullerene derivatives are characterized by good solubility and by better harvesting of the solar radiation with respect to traditional PCBM. In addition, they have a relatively high LUMO level and a low band gap that can be easily tuned by an adequate design of the link between the fullerene and the terthiophene. Preliminary results show that they are potential acceptors for the creation of efficient bulk-heterojunction solar cells based on donor polymers containing thiophene units.