title: Ambipolar polymer field-effect transistors based on fluorinated isoindigo: high performance and improved ambient stability.
abstract: 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.
authors.affiliation: Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
authors.forename: Ting
authors.initials: T
authors.lastname: Lei
authors.forename: Jin-Hu
authors.initials: JH
authors.lastname: Dou
authors.forename: Zhi-Jun
authors.initials: ZJ
authors.lastname: Ma
authors.forename: Cong-Hui
authors.initials: CH
authors.lastname: Yao
authors.forename: Chen-Jiang
authors.initials: CJ
authors.lastname: Liu
authors.forename: Jie-Yu
authors.initials: JY
authors.lastname: Wang
authors.forename: Jian
authors.initials: J
authors.lastname: Pei