Title :
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
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;
Journal_Title :
Electron Device Letters, IEEE
DOI :
10.1109/LED.2012.2213294
