An isomerization method was utilized to yield a novel near-infrared nonfullerene acceptor DTA-IC-M. By simply changing the linking fashion between the anthracene and neighboring thiophenes, a remarkable redshift (∼170 nm) of absorption was observed from DTA-IC-S to its isomer DTA-IC-M which shows a maximum absorption peak over 800 nm with a narrow bandgap of 1.35 eV. Due to the enhanced photo-to-current response in the near-infrared region, an improved short-circuit current of 12.96 mA cm was achieved for the DTA-IC-M based OSCs.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9075510 | PMC |
| http://dx.doi.org/10.1039/c9ra07911d | DOI Listing |
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