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April 1, 2026Advanced Functional Materials

5% Efficiency Organic Photovoltaics Enabled by Strong Photo‐Responsive Aromatic‐Diimide Cathode Interlayer

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Authors

JYJia YaoYBYang BaiLXLingwei Xue

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Overview

Experimental study demonstrates enhanced efficiency in organic photovoltaics using a novel cathode interlayer, suggesting potential for improved energy devices.

Key Points

  • The study aims to investigate the effects of a novel photo-responsive cathode interlayer on the performance of organic photovoltaic devices.
  • Developed a coronene-diimide-based cathode interlayer (CDI-4N)
  • Compared performance metrics with a benzo[ghi]perylene-imide counterpart (BPI-2N)
  • Analyzed intramolecular charge transfer and photo-induced behaviors
  • Evaluated power conversion efficiency and fill factor in the D18:L8-BO binary system
  • Achieved a power conversion efficiency (PCE) of 20.48% with a fill factor of 82.53%
  • Observed a 2.8 times increase in polarized electrostatic potential surface area ratio upon photoexcitation
  • Demonstrated improved conductivity and interfacial electron extraction
  • Established that photo-response engineering can optimize cathode interlayer properties for better OPV performance

Cite This Study

Yao et al. (2026) studied this question.

synapsesocial.com/papers/69cd7b695652765b073a95e6https://doi.org/10.1002/adfm.202600058
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