Synthetic Control of Structural Order in N-Alkylthieno[3,4-c]pyrrole-4,6-dione-Based Polymers for Efficient Solar Cells

作者：Claudia Piliego, Thomas W. Holcombe, Jessica D. Douglas, Claire H. Woo, Pierre M. Beaujuge, Jean M. J. Fréchet · 发表于：Journal of the American Chemical Society · 年份：2010 · DOI：10.1021/ja103275u · 被引用次数：906 · 研究领域：Organic Electronics and Photovoltaics、Conducting polymers and applications、Semiconductor materials and interfaces

The correlation between the nature of alkyl substituents on N-alkylthieno[3,4-c]pyrrole-4,6-dione (TPD)-based polymers and solar cell device performance has been investigated. After adjusting device parameters, these TPD-based polymers used with PC(61)BM provided photovoltaic responses ranging from 4.0% to 6.8%, depending on the size and shape of the alkyl solubilizing groups. Further, we have correlated the effect of the alkyl groups on the structural order and orientation of the polymer backbone using grazing incidence X-ray scattering analysis, and we have demonstrated how fine-tuning of these parameters can improve the power conversion efficiency.