Bistability in Doped Organic Thin Film Transistors
| Autor: | Anna D. Gudmundsdottir, Michael F. Durstock, Jeffery T. Stricker, Adam P. Smith, Barney E. Taylor |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Conductive polymer
chemistry.chemical_classification Materials science Gate dielectric Sulfonic acid Surfaces Coatings and Films symbols.namesake PEDOT:PSS Chemical engineering chemistry Thin-film transistor Materials Chemistry symbols Organic chemistry Physical and Theoretical Chemistry Thin film Raman spectroscopy Layer (electronics) |
| Zdroj: | The Journal of Physical Chemistry B. 111:10397-10401 |
| ISSN: | 1520-5207 1520-6106 |
| DOI: | 10.1021/jp070177g |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|