Efficient small bandgap polymer solar cells with high fill factors for 300 nm thick films.

Li, Weiwei; Hendriks, Koen H; Roelofs, W S Christian; Kim, Youngju; Wienk, Martijn M; Janssen, René A J · Adv Mater · 2013

basic_science · Level V

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Abstract

A high-molecular-weight conjugated polymer based on alternating electron-rich and electron-deficient fused ring systems provides efficient polymer solar cells when blended with C60 and C70 fullerene derivatives. The morphology of the new polymer/fullerene blend reduces bimolecular recombination and allows reaching high fill factors and power conversion efficiencies for films up to 300 nm thickness.

Medical subject headings