Partner: Riccardo Medri


Recent publications
1.Lanzi M., Pierini F., Medri R., Salatelli E., Marinelli M., Efficient Bulk-Heterojunction Solar Cells Based on Symmetrically Disubstituted Polyalkyloxythiophenes at Low Synthetic Complexity, Macromolecular Chemistry and Physics, ISSN: 1022-1352, DOI: 10.1002/macp.202500184, pp.e00184-1-12, 2025
Abstract:

The aim of this study is to present a challenging insight into the molecular design and architecture optimization of two cost-effective conjugated polymers and their adoptions in bulk heterojunction fullerene-based solar cells. The new polymers, with repeating units based on symmetrically disubstituted polyalkyloxythiophenes have been prepared with simple procedures and have been employed as electron-donor materials for polymer solar cells. A comparative study with monosubstituted polyalkyloxythiophene has evidenced a more favorable active morphology, improved charge mobility, and higher power conversion efficiency for the newly prepared disubstituted polymers. Photoconversion ability further increases when a thin layer of a cationic polyelectrolyte is coated on the surface of the photoactive blend, thus facilitating electron transport. Finally, the prepared polymers were evaluated according to a figure of merit based on their synthetic complexity and conversion efficiency, resulting in particularly suitable for large-scale production.

Keywords:

alkyl side chain modification,figure of merit,polymeric solar cells,thiophene-based electron donors

Affiliations:
Lanzi M.-University of Bologna (IT)
Pierini F.-IPPT PAN
Medri R.-other affiliation
Salatelli E.-University of Bologna (IT)
Marinelli M.-other affiliation