High-Performance, Air-Stable Field-Effect Transistors Based on Heteroatom-Substituted Naphthalenediimide-Benzothiadiazole Copolymers Exhibiting Ultrahigh Electron Mobility up to 8.5 cm V<sup>-1</sup> s<sup>-1</sup>.

Zhao, Zhiyuan; Yin, Zhihong; Chen, Huajie; Zheng, Liping; Zhu, Chunguang; Zhang, Long; Tan, Songting; Wang, Hanlin et al. · Adv Mater · 2017

basic_science · Level V

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Abstract

Rational heteroatom engineering is applied to develop high-performance electron-transporting naphthalenediimide copolymers. Top-gate field-effect transistors fabricated from selenophene-containing polymers achieve an ultrahigh electron mobility of 8.5 cm<sup>2</sup> V<sup>-1</sup> s<sup>-1</sup> and excellent air-stability. The results demonstrate that the incorporation of selenophene heterocycles into the polymers can improve the film-forming ability, intermolecular interaction, and carrier transport significantly.