Surface-energy-dependent field-effect mobilities up to 1 cm2/V s for polymer thin-film transistor

被引：153

作者：

Umeda, Tokiyoshi ^{[1
]}

Kumaki, Daisuke ^{[2
]}

Tokito, Shizuo ^{[1
,2
]}

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 | 2009年 / 105卷 / 02期

关键词：

field effect transistors; liquid crystal polymers; monolayers; organic semiconductors; self-assembly; surface energy; thin film transistors; SELF-ASSEMBLED MONOLAYERS; CONTACT RESISTANCE; CHARGE-TRANSPORT; CARRIER MOBILITY; LIQUID-CRYSTALS; POLYTHIOPHENE; ORIENTATION; DRIVEN; OTFTS;

D O I：

10.1063/1.3072669

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The field-effect mobility of a liquid-crystalline semiconducting polymer, poly(2,5-bis(3-hexadecylthiophene-2-yl)thieno[3,2-b]thiophene) (PB16TTT), has depended significantly on the surface energies of self-assembled monolayers (SAMs) formed on insulating layers. Using a SAM with fluoroalkyl groups, with a low surface energy of 13.3 mN/m, the mobility of PB16TTT reached as high as 1 cm(2)/V s. These results indicate that an edge-on orientation of the polymer chains progresses more favorably on the surfaces with low surface energies via the liquid-crystalline phase.

引用

页数：5

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