High-mobility and air-stable organic thin-film transistors with highly ordered semiconducting polymer films

被引：65

作者：

Umeda, Tokiyoshi

Tokito, Shizuo

Kumaki, Daisuke

机构：

[1] NHK Japan Broadcasting Corp, Setagaya Ku, Tokyo 1578510, Japan

[2] Tokyo Inst Technol, Dept Elect Chem, Midori Ku, Yokohama, Kanagawa 2268502, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2007年 / 101卷 / 05期

关键词：

D O I：

10.1063/1.2711780

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on high crystalline thin films of liquid-crystalline polythiophene derivative, poly(2,5-bis(3-hexadecylthiophene-2-yl)thieno[3,2-b]thiophene) (PB16TTT) that exhibit terrace structures and molecular steps of its polymer chains by annealing in its liquid-crystalline phase. The crystallinity of the PB16TTT polymer films formed on SiO2 gate insulating layers with smooth self-assembled monolayer was improved by changing the octyltrichlorosilane treatment time for the SiO2, which led to reproducible high field-effect mobilities of the polymer thin-film transistors up to 0.44 cm(2)/V s. High stability of the transistor for repeated stressing in ambient air was also demonstrated. (c) 2007 American Institute of Physics.

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页数：5

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