Threshold Voltage Control in Dual‐Gate Organic Electrochemical Transistors

Tseng, Hsin; Weissbach, Anton; Kucinski, Juzef; Solgi, Ali; Nair, Rakesh Rajendran; Bongartz, Lukas M.; Ciccone, Giuseppe; Cucchi, Matteo; Leo, Karl; Kleemann, Hans

doi:10.1002/admi.202201914

Cited by 12 publications

(10 citation statements)

References 44 publications

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“…The microscopic image of the fabricated OECT is shown in Fig. 1(a) and the details of the fabricated OECTs can be found in [9], [14]. Fig.…”

Section: Device Fabricationmentioning

confidence: 99%

“…As solid-state electrolyte technology advances [9], [12], [13], OECTs have enormous potential to be integrated into wearable or even implantable electronic systems with intelligent function. Furthermore, the simple manufacturing and good yield of OECTs promise a good scaling solution [14]. The synaptic performance of OECTs are due to the electrochemical gate operation principle rather than electrostatic in their field-effect counterpart [15], [16].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Device Physics, Modeling and Simulation of Organic Electrochemical Transistors

Koch

Tseng²,

Weissbach³

et al. 2023

IEEE J. Electron Devices Soc.

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In this work, we investigate organic electrochemical transistors (OECTs) as a novel artificial electronic device for the realization of synaptic behavior, bioelectronics, and a variety of applications. A numerical method considering the Poisson-Boltzmann statistics is introduced to reproduce associated charge densities, electrostatics and switching properties of OECTs. We shed light on the working principle of OECTs by taking into account the ionic charge distribution in the electrolyte and incomplete ionization of the organic semiconductor describing the underlying electrochemical redox reaction. This enables analyzing the OECTs electrical performance as well as a simplified chemical properties via an electrical double layer, doping and dedoping of the OMIEC layer. We have fabricated, characterized, simulated and analyzed OECTs based on PEDOT:PSS, and we show that the proposed model reveals important properties of the device's working mechanism. The model shows a good agreement with the experimental data of the fabricated devices.

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“…The microscopic image of the fabricated OECT is shown in Fig. 1(a) and the details of the fabricated OECTs can be found in [9], [14]. Fig.…”

Section: Device Fabricationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Device Physics, Modeling and Simulation of Organic Electrochemical Transistors

Koch

Tseng²,

Weissbach³

et al. 2023

IEEE J. Electron Devices Soc.

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“…Therefore, a channel will be switched on and off almost identically by any gate immersed in solution. [ 33 ] Equation () breaks down if the gates are not identical. Different size brings about different capacitance which must be summed in parallel.…”

Section: In Liquido Operation Of Oectsmentioning

confidence: 99%

“…Therefore, a channel will be switched on and off almost identically by any gate immersed in solution. [33] Equation ( 5) breaks down if the gates are not identical.…”

Section: Static Regimementioning

confidence: 99%

In Liquido Computation with Electrochemical Transistors and Mixed Conductors for Intelligent Bioelectronics

et al. 2023

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“…Importantly, in the static regime, the distance between channel and gate does not matter as long as the electrolyte provides good ionic conduction. Therefore, a channel will be switched on and off almost identically by any gate immersed in solution [30]. Eq.…”

Section: Static Regimementioning

confidence: 99%

In-Liquido Computation with Electrochemical Transistors and Mixed Conductors for Intelligent Bioelectronics

Cucchi¹,

Parker²,

Gkoupidenis³

et al. 2022

Preprint

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Next-generation implantable computational devices require long-term stable electronic components capable of operating in, and interacting with, electrolytic surroundings without being damaged. Organic electrochemical transistors (OECTs) emerged as fitting candidates. However, while single devices feature impressive figures of merit, integrated circuits (ICs) immersed in a common electrolytes are hard to realize using electrochemical transistors, and there is no clear path forward for optimal top-down circuit design and high-density integration. The simple observation that two OECTs immersed in the same electrolytic medium will inevitably interact hampers their implementation in complex circuitry. The electrolyte's ionic conductivity connects all the devices in the liquid, producing unwanted and often unforeseeable dynamics. Minimizing or harnessing this crosstalk has been the focus of very recent studies. In this Perspective, we discuss the main challenges, trends, and opportunities for realizing OECT-based circuitry in a liquid environment that could circumnavigate the hard limits of engineering and human physiology. We analyze the most successful approaches in autonomous bioelectronics and information processing. Elaborating on the strategies to circumvent and harness device crosstalk proves that platforms capable of complex computation and even machine learning can be realized in-liquido using mixed ionic-electronic conductors.

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Threshold Voltage Control in Dual‐Gate Organic Electrochemical Transistors

Cited by 12 publications

References 44 publications

Device Physics, Modeling and Simulation of Organic Electrochemical Transistors

Device Physics, Modeling and Simulation of Organic Electrochemical Transistors

In Liquido Computation with Electrochemical Transistors and Mixed Conductors for Intelligent Bioelectronics

In-Liquido Computation with Electrochemical Transistors and Mixed Conductors for Intelligent Bioelectronics

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