Low-voltage operation of n-type organic field-effect transistors with ionic liquid

被引：42

作者：

Uemura, T. ^{[1
]}

Yamagishi, M. ^{[1
]}

Ono, S. ^{[2
]}

Takeya, J. ^{[1
,3
]}

机构：

[1] Osaka Univ, Grad Sch Sci, Osaka 5600043, Japan

[2] Cent Res Inst Elect Power Ind, Tokyo 2018511, Japan

[3] Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama 3330012, Japan

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 10期

关键词：

electrochemistry; electrolytes; ionic conductivity; organic field effect transistors; organic semiconductors; thin film transistors; viscosity; CIRCUITS;

D O I：

10.1063/1.3225153

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

High performance n-type organic field-effect transistors are developed to achieve high transconductance and low-threshold voltage using ionic-liquid electrolyte for intense electrostatic gating. Tetracyanoquinodimethane single crystals and C(60) thin films are interfaced with ionic liquid of 1-ethyl-3-methyl-imidazolium bis(trifluoromethanesulfonyl)imide known for its low viscosity and high ionic conductivity, so that high-density electrons are rapidly accumulated in the semiconductor surfaces with the application of minimum gate voltages, forming 1-nm thick electric double layers to concentrate electric field as high as 1 MV/cm. The C(60) transistor shows the highest normalized transconductance among reported n-type organic transistors, together with minimum threshold voltage.

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页数：3

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