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Molar Mass Thresholds in the Structural Behavior of Benzodithiophene-Based Semiconducting Polymers

Matteo Sanviti1, Jeromy Rech2, Xiaowei Zhong2

  • 1Universidade da Coruña Campus Industrial de Ferrol, CITENI, Campus de Esteiro S/N, Ferrol 15471, Spain.

Macromolecules
|March 2, 2026
PubMed
Summary

Optimizing donor polymer molar mass is key for high-efficiency organic solar cells (OSCs). A threshold of ~70 kg/mol enhances microstructure, leading to superior device performance and controlled crystallinity evolution.

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