Organic thin-film transistors with novel high-k polymers as dielectric layers

文献情報

出版日 2015-03-30

DOI 10.1039/C5PY00221D

インパクトファクター 5.582

著者

Yao Li, He Wang, Chunyu Zhang, Yingchao Zhang, Zhanchen Cui, Donghang Yan, Zuosen Shi

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要旨

This study describes a general approach to design and synthesize a series of novel high-k polymers containing π-conjugated structures with cyano groups for use as a dielectric layer in organic thin-film transistors (OTFTs). The polymer dielectric films have been evaluated based on surface morphology, dielectric constant, leakage current density and compatibility with organic semiconductors, which can be readily fabricated via solution processes in an ambient atmosphere. The characterization confirms that the π-conjugated structures with cyano groups can provide a high dielectric constant (high-k) and a low electrostatic loss. With these polymer dielectric layers, para-sexiphenyl (p-6P)/vanadyl-phthalocyanine (VOPc) OTFTs exhibit excellent performances with a threshold voltage of −3.22 V, a charge carrier mobility of 0.49 cm2 V−1 s−1, and an on/off current ratio >106.

掲載誌

Polymer Chemistry

CiteScore: 8.6

自己引用率: 7.3%

年間論文数: 457

Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.

Organic thin-film transistors with novel high-k polymers as dielectric layers

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