Bistable Organic Electrochemical Transistors: Enthalpy vs. Entropy
Type of the data | Dataset | |
Total size of the dataset | 12516942 | |
Author | Bongartz, Lukas | |
Upload date | 2024-07-03T11:27:08Z | |
Publication date | 2024-07-03T11:27:08Z | |
Publication date | 2024-07-03 | |
Abstract of the dataset | Organic electrochemical transistors (OECTs) serve as the foundation for a wide range of emerging applications, from bioelectronic implants and smart sensor systems to neuromorphic computing. Their ascent originates from a distinctive switching mechanism based on the coupling of electronic and ionic charge carriers, which gives rise to a multitude of unique characteristics. Notably, various OECT systems have been reported with significant hysteresis in their transfer curve. While being a feature sought after as non-volatile memory in neuromorphic systems, no universal explanation has yet been given for its physical origin, impeding its advanced implementation. Herein, we present a thermodynamic framework that readily elucidates the emergence of bistable OECT operation through the interplay of enthalpy and entropy. We validate our model through three experimental approaches, covering temperature-resolved characterizations, targeted material manipulation, and thermal imaging. In this context, we demonstrate the exceptional scenario where the subthreshold swing deviates from Boltzmann statistics, and we provide an alternate view on existing data in literature, which further supports our model. Finally, we leverage the bistability in form of a single-OECT Schmitt trigger, thus compacting the complexity of a multi-component circuit into a single device. These insights offer a revised understanding of OECT physics and promote their application in non-conventional computing, where symmetry-breaking phenomena are pivotal to unlock novel paradigms. | |
Public reference to this page | https://opara.zih.tu-dresden.de//handle/123456789/777 | |
Public reference to this page | https://doi.org/10.25532/OPARA-552 | |
Publisher | Technische Universität Dresden | |
Licence | Attribution-ShareAlike 4.0 International | en |
URI of the licence text | http://creativecommons.org/licenses/by-sa/4.0/ | |
Specification of the discipline(s) | 3::32 | |
Title of the dataset | Bistable Organic Electrochemical Transistors: Enthalpy vs. Entropy |
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