High-Performance Flexible TFT Circuits Using TIPS Pentacene and Polymer Blend on Plastic

Author

Choi, Min Hee ; Kim, Byung Soon ; Jang, Jin

Author_Institution

Dept. of Inf. Display, Kyung Hee Univ., Seoul, South Korea

Volume

33

Issue

11

fYear

2012

Firstpage

1571

Lastpage

1573

Abstract

We report the high-performance circuit on 25-μm polyimide substrate with organic thin-film transistors (TFTs) (OTFTs) using 6,13-bis(triisopropyl-silylethynyl) pentacene and polymer blending. Because of high mobility (0.64 cm²/V·s) and low threshold voltage (<;|1 V|) of the TFTs, an 11-stage ring oscillator (RO) made of these TFTs exhibits the switching speed of 31.4 kHz at the supply voltage of 20 V. The output waveforms of the RO change little after 5000 times bending with a radius of curvature of 2 mm, and thus, the OTFT circuits can be applied to very flexible electronics.

Keywords

organic field effect transistors; plastics; polymer blends; thin film transistors; 6,13-bis(triisopropyl-silylethynyl) pentacene; OTFT; TIPS pentacene; frequency 31.4 kHz; high-performance flexible TFT circuits; organic thin-film transistors; plastic; polyimide substrate; polymer blending; ring oscillator; size 25 mum; voltage 20 V; Electronic circuits; Flexible electronics; Organic thin film transistors; Pentacene; Plastics; Polymers; Substrates; Electronic circuits; flexible substrate; organic thin-film transistor (TFT) (OTFT); solution process;

fLanguage

English

Journal_Title

Electron Device Letters, IEEE

Publisher

ieee

ISSN

0741-3106

Type

jour

DOI

10.1109/LED.2012.2213294

Filename

6311420