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Environmental ageing of polymer-based thin film transistors: influence of the semiconducting polymer chemical structure

Morgado, J. ; Charas, A. ; Alcácer, L.

Environmental ageing of polymer-based thin film transistors: influence of the semiconducting polymer chemical structure, Proc Conf. on Telecommunications - ConfTele, Santa Maria da Feira, Portugal, Vol. Conftele2009, pp. 153 - 156, May, 2009.

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Abstract
At variance with a high stability of the inorganic materials for electronics under normal atmospheric conditions, organic materials are more sensitive, due to charge transfer doping by oxygen and water and degradation when exposed to the ultraviolet radiation. Here we show that the chemical structure of the conjugated polymer used as active semiconducting material of polymer field-effect transistors has a drastic effect on their stability. These results show that, by chemical manipulation, some of the above limitations, when envisaging the use of organic materials for electronics, can be reduced.