Ambipolar Polymer Field-Effect Transistors Based on Fluorinated Isoindigo: High Performance and Improved Ambient Stability

作者：Ting Lei, Jin‐Hu Dou, Zhijun Ma, Cong-Hui Yao, Chenjiang Liu, Jie‐Yu Wang, Jian Pei · 发表于：Journal of the American Chemical Society · 年份：2012 · DOI：10.1021/ja310283f · 被引用次数：340 · 研究领域：Organic Electronics and Photovoltaics、Thin-Film Transistor Technologies、Conducting polymers and applications

Ambipolar transport behavior in isoindigo-based conjugated polymers is observed for the first time. Fluorination on the isoindigo unit effectively lowers the LUMO level of the polymer and significantly increases the electron mobility from 10(-2) to 0.43 cm(2) V(-1) s(-1) while maintaining high hole mobility up to 1.85 cm(2) V(-1) s(-1) for FET devices fabricated in ambient. Further investigation indicates that fluorination also affects the interchain interactions of polymer backbones, thus leading to different polymer packing in thin films.