4.7 Article

Side-chain effect of perylene diimide tetramer-based non-fullerene acceptors for improving the performance of organic solar cells

Journal

MATERIALS CHEMISTRY FRONTIERS
Volume 2, Issue 11, Pages 2104-2108

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c8qm00451j

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Funding

  1. National Natural Science Foundation of China [21502022, 21663005, 21871060]
  2. Natural Science Foundation of Jiangxi Province [20171BAB213005, 2018ACB21009, 20181BAB213007]

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Two novel perylene diimide tetramer-based non-fullerene acceptors, PDIPQ-C5 and PDIPQ-C6, with different alkyl chain lengths were synthesized. Side-chain effects were studied by theoretical calculations, grazing incident X-ray diffraction, and atomic force microscopy. Organic solar cells based on PDIPQ-C5:P3TEA blend films with 2.5% DIO solvent additive exhibited the highest PCEs (5.16%).

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