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Updated: May 10, 2026

Morphology Control for Fully Printable Organic–Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer
08:29

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Published on: January 10, 2017

Molecular Peripheral Electronegativity Modulates Crystallization Kinetics for Efficient Organic Solar Cells.

Renqiang Shao1,2, Xiaoning Wang2, Jianxiao Wang2,3,4

  • 1School of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, China.

Small Methods
|May 9, 2026
PubMed
Summary
This summary is machine-generated.

Peripheral electronegativity in non-fullerene acceptors was explored. Modifying acceptor periphery impacts crystallization and charge transport, leading to high-efficiency organic solar cells, with ternary devices reaching over 20%.

Keywords:
electronegativitymolecular aggregationnon‐fullerene acceptororganic solar cellperipheral functionalization

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Area of Science:

  • Materials Science
  • Organic Electronics
  • Photovoltaics

Background:

  • Non-fullerene acceptors (NFAs) are crucial for organic solar cells (OSCs).
  • Peripheral electronegativity's role in NFAs is underexplored.
  • Tuning intermolecular interactions is key for OSC performance.

Purpose of the Study:

  • Investigate the impact of peripheral electronegativity on NFA properties.
  • Develop novel Y-series NFAs with tunable peripheral electronic character.
  • Optimize OSC performance through molecular design and ternary blending.

Main Methods:

  • Synthesis of three Y-series NFAs (Y-2FPh, Y-Ph, Y-2OMePh) with varying peripheral groups.
  • Characterization of crystallization, π-π stacking, and charge transport properties.
  • Fabrication and testing of single-junction and ternary organic solar cells.

Main Results:

  • Y-2FPh showed faster crystallization and limited π-π stacking.
  • Y-2OMePh exhibited slower crystallization, enhanced molecular ordering, and superior charge transport.
  • Aggregation-induced quenching affected Y-2OMePh's luminescence.
  • Single-junction devices achieved efficiencies up to 19.00%.
  • Ternary devices incorporating Y-series NFAs boosted performance, with Y-2OMePh reaching 20.01% efficiency.

Conclusions:

  • Peripheral electronegativity is a critical parameter for controlling NFA aggregation and exciton/charge dynamics.
  • Molecular design of NFAs can significantly enhance OSC performance.
  • Ternary blending offers a viable strategy for achieving high-efficiency organic solar cells.