Donor-acceptor alternating copolymer nanowires for highly efficient organic solar cells.
basic_science · Level V
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- Record sourced from PubMed, PMID 25074131.
- Also identified by DOI 10.1002/adma.201401203.
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Abstract
A donor-acceptor conjugated copolymer enables the formation of nanowire systems that can be successfully introduced into bulk-heterojunction organic solar cells. A simple binary solvent mixture that makes polarity control possible allows kinetic control over the self-assembly of the crystalline polymer into a nanowire structure during the film-forming process. The enhanced photoconductivity of the nanowire-embedded photoactive layer efficiently facilitates photon harvesting in the solar cells. The resultant maximum power conversion efficiency is 8.2% in a conventional single-cell structure, revealing a 60% higher performance than in devices without nanowires.