Solvent effect of inkjet printed source/drain electrodes on electrical properties of polymer thin-film transistors
Open Access
- 20 February 2006
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 88 (8) , 082102
- https://doi.org/10.1063/1.2177642
Abstract
We show that the electrical properties of polymerthin-film transistors (PTFTs) can be enhanced by controlling the solventproperties of poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonate) (PEDOT/PSS) solution used as the inkjet-printed source and drain electrodes. Specifically, addition of dimethyl sulfoxide (DMSO) into the PEDOT/PSS solution increased the conductivity of the inkjet-printed PEDOT electrodes and remarkably reduced the contact resistance of the electrodes. The lower contact resistance of the DMSO-treated PEDOT electrode compared to the corresponding electrode without DMSO treatment may be due to enhanced interfacial stability at the contact between the printed PEDOT electrodes and the semiconductor layers.Keywords
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