Journal of the Korean Physical Society

pISSN 0374-4884 eISSN 1976-8524


Application and Devices

Published online September 15, 2006    

Copyright © The Korean Physical Society.

Plastic-Based Organic Thin-Film Transistors with Thermally Cured Polymeric Gate Dielectrics

Gi Heon Kim, Sung-Min Yoon, Chul Am Kim, Kyu-Ha Baek, In-Kyu You, Seong Youl Kang, Seong Deok Ahn and Kyung Soo Suh

J. Korean Phys. Soc. 49(3), 1239 (2006)


In this investigation, we synthesized thermally curable polymers by mixing poly(vinyl phenol) (PVP) and a thermal-crosslinking agent (a methylated melamine-formaldehyde, MMF). These polymeric insulating films exhibit good chemical, physical, and electrical properties as dielectrics. Their insulating and dielectric properties depend on the MMF concentration. We fabricated plastic-based organic thin-film transistors (OTFTs) with these dielectric layers to investigate the relationship between the performance of the OTFT and the electrical/chemical properties of these insulating films. The OTFT showed good electrical performance; the field-effect mobility was 1.1 cm$^2$V$^{-1}$s$^{-1}$. A dielectric layer with a relatively low dielectric constant was found to give a higher field-effect mobility