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