Non-ideal nernstian behavior in organic electrochemical transistors: fundamental processes and theory
Materials Horizons, ISSN: 2051-6355, Vol: 11, Issue: 23, Page: 6007-6018
2024
- 5Captures
- 1Mentions
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- Captures5
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New Data from University of Sao Paulo Illuminate Findings in Materials Science (Non-ideal Nernstian Behavior In Organic Electrochemical Transistors: Fundamental Processes and Theory)
2024 OCT 18 (NewsRx) -- By a News Reporter-Staff News Editor at Chemicals & Chemistry Daily Daily -- Investigators publish new report on Science -
Article Description
Despite the successful implementation of organic electrochemical based devices (OEDs), fundamental processes that regulate their operations and sensing capabilities, specifically those related to ion-to-electron transduction, remain unclear. Indeed, there is still a lack of fundamental models to explain the steady-state and transient characteristics of OEDs, associating fundamentals of the physical-chemistry of the pair polymer-electrolyte with the output performance of such devices. In this study, we bring new highlights to a thermodynamic-based model that qualitatively and quantitatively describes OEDs operation, with a special focus on the organic electrochemical transistor (OECT). In this context, we introduce novel interpretations for traditional drain current models, grounded in thermodynamic and electrochemical principles. The model fitting parameters are correlated to the physical and chemical properties of the polymer-electrolyte pair, and it has been shown to explain trends observed in experimental results from the literature. Moreover, our model reveals that a non-Nerstian electrochemical behavior dominates OECT operation. Also, by analyzing experimental data, we are able to generate guidelines for material design and device development, targeting highly sensitive electrochemical biosensors and devices.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85205916069&origin=inward; http://dx.doi.org/10.1039/d4mh00758a; http://www.ncbi.nlm.nih.gov/pubmed/39320945; https://xlink.rsc.org/?DOI=D4MH00758A; https://dx.doi.org/10.1039/d4mh00758a; https://pubs.rsc.org/en/content/articlelanding/2024/mh/d4mh00758a
Royal Society of Chemistry (RSC)
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