Investigation of stability in polymer thin film transistors for flexible active-matrix displays

Yong H. Kim; Sung K. Park; Jeong I. Han; Dae-Gyu Moon; Won K. Kim

doi:10.1117/12.545322

8 September 2004 Investigation of stability in polymer thin film transistors for flexible active-matrix displays

Yong H. Kim, Sung K. Park, Jeong I. Han, Dae-Gyu Moon, Won K. Kim

Proceedings Volume 5464, Organic Optoelectronics and Photonics; (2004) https://doi.org/10.1117/12.545322
Event: Photonics Europe, 2004, Strasbourg, France

Abstract

We investigated the electrical stability of polythiophene-based organic thin film transistors (OTFTs). The electrical properties of a thin film transistor such as field effect mobility, threshold voltage and on/off current changed vastly when exposed to air. In order to analyze the stability of the transistor, electrical properties were first measured in vacuum for several hours, then air or oxygen gas was introduced and the changes in the electrical properties were observed. Device showed a decrease in field effect mobility from 10^-3 cm²/V•s to 10^-5 cm²/V•s after exposure to air and the on/off ratio was also changed from 10³ to 10¹.

Citation Download Citation

Yong H. Kim, Sung K. Park, Jeong I. Han, Dae-Gyu Moon, and Won K. Kim "Investigation of stability in polymer thin film transistors for flexible active-matrix displays", Proc. SPIE 5464, Organic Optoelectronics and Photonics, (8 September 2004); https://doi.org/10.1117/12.545322

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