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Benzobisthiazole and rhodanine based low energy level small molecule donors for organic solar cells

Dyes and Pigments, ISSN: 0143-7208, Vol: 234, Page: 112564
2025
  • 0
    Citations
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    Usage
  • 3
    Captures
  • 1
    Mentions
  • 0
    Social Media
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  • Captures
    3
  • Mentions
    1
    • News Mentions
      1
      • 1

Most Recent News

Findings from Ocean University of China Update Knowledge of Organic Solar Cells (Benzobisthiazole and Rhodanine Based Low Energy Level Small Molecule Donors for Organic Solar Cells)

2025 MAR 04 (NewsRx) -- By a News Reporter-Staff News Editor at Tech Daily News -- Data detailed on Solar Cells - Organic Solar Cells

Article Description

At present, high-performance small molecule donors for organic solar cells (OSCs) are almost entirely composed of the electron donating core benzodithiophene (BDT), which has resulted in a lack of material diversity and further improvement. In this article, we constructed an A-π-A′-π-A conjugated structure using electron withdrawing group benzobisthiazole (BBT) core and rhodanine end group, and synthesized two small molecule donors BBTSM-3 and BBTSM-4. Under the dual electron withdrawing effects of BBT and rhodanine, the HOMO energy levels of BBTSM-3 and BBTSM-4 reached extremely low levels (−5.60 eV and −5.64 eV), but still matched well with the acceptor Y6. In addition, through reasonable side chain regulation, BBTSM-3 exhibited stronger crystallinity and weaker aggregation at the same time. This provides a reference point for the use of the electron withdrawing core and the regulation of side chains among small molecule donors.

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