An electron acceptor challenging fullerenes for efficient polymer solar cells.
basic_science · Level V
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- Record sourced from PubMed, PMID 25580826.
- Also identified by DOI 10.1002/adma.201404317.
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Abstract
A novel non-fullerene electron acceptor (ITIC) that overcomes some of the shortcomings of fullerene acceptors, for example, weak absorption in the visible spectral region and limited energy-level variability, is designed and synthesized. Fullerene-free polymer solar cells (PSCs) based on the ITIC acceptor are demonstrated to exhibit power conversion efficiencies of up to 6.8%, a record for fullerene-free PSCs.