Bistability in Doped Organic Thin Film TransistorsClick to copy article linkArticle link copied!
Abstract
Organic thin film transitors (TFTs) with the conducting polymer poly(3,4-ethylenedioxythiophene):poly(styrene sulfonic acid), PEDOT:PSS, as the active layer and cross-linked, layer-by-layer assembled poly(allylamine hydrochloride)/poly(acrylic acid) (PAH/PAA) multilayers as the gate dielectric layer were investigated. A combination of spectroscopic data and device performance characteristics was used to study the behavior of these TFT devices under a variety of controlled environmental test conditions. It was shown that depletion and recovery of the device can be induced to occur by a means that is consistent with the electrochemical oxidation and reduction of water contained in the film. In addition to acting as a reactant, moisture also acts as a plasticizer to control the mobility of other species contained in the film and thereby permits bistable operation of these devices. Raman spectroscopy was used to show that the observed device switching behavior is due to a change in the PEDOT doping level.
†
University of Cincinnati.
‡
Wright-Patterson Air Force Base.
§
UES, Inc.
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University of Dayton Research Institute.
*
Corresponding author. E-mail address: [email protected].
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This article is cited by 3 publications.
- David Aradilla, Francesc Estrany, Carlos Alemán. Different properties for poly(3,4‐ethylenedioxythiophene) films derived from single or multiple polymerization steps. Journal of Applied Polymer Science 2011, 121
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, 1982-1991. https://doi.org/10.1002/app.33758
- David Aradilla, Francesc Estrany, Ramon Oliver, Carlos Alemán. Properties of nanometric and micrometric multilayered films made of three conducting polymers. European Polymer Journal 2010, 46
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, 2222-2228. https://doi.org/10.1016/j.eurpolymj.2010.10.008
- David Aradilla, Francesc Estrany, Elaine Armelin, Carlos Alemán. Morphology and growing of nanometric multilayered films formed by alternated layers of poly(3,4-ethylenedioxythiophene) and poly(N-methylpyrrole). Thin Solid Films 2010, 518
(15)
, 4203-4210. https://doi.org/10.1016/j.tsf.2009.12.079
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