Título:
Exploring mixed ionic–electronic-conducting PVA/PEDOT : PSS hydrogels as channel materials for organic electrochemical transistors.
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Autor:
Gregorio, Tatiana
Mombrú, Dominique
Romero, Mariano
Faccio, Ricardo
Mombrú, Álvaro W.
Mombrú, Dominique
Romero, Mariano
Faccio, Ricardo
Mombrú, Álvaro W.
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Artículo
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HIDROGEL
TRANSISTORES ELECTROQUIMICOS ORGANICOS
CONDUCCION IONICA
TRANSISTORES ELECTROQUIMICOS ORGANICOS
CONDUCCION IONICA
Año de publicación:
2024
Contenido:
Resumen:
Here, we report the preparation and evaluation of PVA/PEDOT:PSS-conducting hydrogels working as channel materials for OECT applications, focusing on the understanding of their charge transport and transfer properties. Our conducting hydrogels are based on crosslinked PVA with PEDOT:PSS interacting via hydrogen bonding and exhibit an excellent swelling ratio of ~180–200% w/w. Our electrochemical impedance studies indicate that the charge transport and transfer processes at the channel material based on conducting hydrogels are not trivial compared to conducting polymeric films. The most relevant feature is that the ionic transport through the swollen hydrogel is clearly different from the transport through the solution, and the charge transfer and diffusion processes govern the low-frequency regime. In addition, we have performed in operando Raman spectroscopy analyses in the OECT devices supported by first-principle computational simulations corroborating the doping/de-doping processes under different applied gate voltages. The maximum transconductance (gm~1.05 μS) and maximum volumetric capacitance (C*~2.3 F.cm−3) values indicate that these conducting hydrogels can be promising candidates as channel materials for OECT devices.
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MDPI
EN:
Polymers v.16, n°11, 2024
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Citación:
Gregorio, T., Mombrú, D., Romero, M. y otros. "Exploring mixed ionic–electronic-conducting PVA/PEDOT : PSS hydrogels as channel materials for organic electrochemical transistors". Polymers v.16. [en línea] 2024 n°11, 2024 .. 14 p..
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Licencia Creative Commons Atribución (CC - By 4.0)
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| Ficheros | Descripción | Tamaño | Formato | ||
|---|---|---|---|---|---|
| Exploring mixed ionic–electronic-conducting PVAPEDOT.pdf | Artículo | 3.82 MB | Adobe PDF |