A regioregular polythiophene-fullerene for polymeric solar cells

作者：Lanzi Massimiliano^*; Salatelli Elisabetta; Benelli Tiziana; Caretti Daniele; Giorgini Loris; Di Nicola Francesco Paolo

来源：Journal of Applied Polymer Science, 2015, 132(25): 42121.

DOI：10.1002/app.42121

• conducting polymers
• functionalization of polymers
• graphene and fullerenes
• nanotubes
• optical and photovoltaic applications

In this article, we present the synthesis and characterization of a new thiophenic copolymer bearing the C-60 fullerene directly linked to the end of a hexamethylenic side chain. This copolymer was prepared with good yield using a simple and straightforward post-polymerization functionalization procedure applied on a soluble regioregular polymeric precursor obtained by regiospecific organometallic coupling. Copolymer structural and photophysical properties were investigated by gel permeation chromatography, thermal analysis (DSC and TGA), NMR, IR, UV-Vis, and atomic force spectroscopy. The double-cable copolymer possesses good solubility in common organic solvents, high filmability, thermal stability, and low segmental aggregation tendency. It was tested as a photoactive layer in a polymeric solar cell showing a power conversion efficiency under 100 mW cm(-2) AM 1.5 illumination higher than 4%, more than that of the reference cell made with the conventionally used P3HT/PCBM blend.

• 出版日期2015-7-5