articleEnergy & Environmental ScienceJan 1, 2025Closed access

Dielectric constant engineering of nonfullerene acceptors enables a record fill factor of 83.58% and a high efficiency of 20.80% in organic solar cells

JDJunwei DongYLYinfeng LiCLChentong LiaoXXXiaopeng XuLYLiyang Yu

Sichuan University · Chengdu University of Technology · +1 more institution

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Abstract

Two nonfullerene acceptors with trifluoromethyl end-capped alkyl side chains increased the dielectric constant and optimized optoelectronic properties, achieving an impressive power conversion efficiency of 20.80% in organic solar cells.

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Topics
Keywords
  • Dielectric
  • Organic solar cell
  • Materials science
  • Constant (computer programming)
  • Optoelectronics
  • Computer science
  • Composite material
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