Dual‐Mode Organic Electrochemical Transistors Based on Self‐Doped Conjugated Polyelectrolytes for Reconfigurable Electronics (Adv. Mater. 23/2022)

Nguyen‐Dang, Tung; Chae, Sangmin; Chatsirisupachai, Jirat; Wakidi, Hiba; Promarak, Vinich; Visell, Yon; Nguyen, Thuc‐Quyen

doi:10.1002/adma.202270170

Cited by 7 publications

(12 citation statements)

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“…This tuning of the doping level of CPE‐K with ions enables OECTs to function by taking advantage of both modes of operation. [ 16 ] Doping and dedoping behavior is clearly shown in the variance plot of the absorption intensity with respect to the intensity at 0 V (Figure 1d). Subsequently, the doping level was compared by plotting the polaron and π–π* absorption intensity as a function of the positive voltage (Cl − migration).…”

Section: Resultsmentioning

confidence: 98%

“…CPE‐K can thus respond to both negative and positive ions in electrolytes. [ 16 ] Recent reports have demonstrated that increasing the molecular weight (MW) of CPE‐K results in mechanically robust gels with enhanced ionic conductivity within the 3D conductive network. [ 17 ] In addition, literature precedents show that film morphology, charge transport, and device performance of neutral conjugated polymers are dependent on MW.…”

Section: Introductionmentioning

confidence: 99%

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Impact of Molecular Weight on the Ionic and Electronic Transport of Self‐Doped Conjugated Polyelectrolytes Relevant to Organic Electrochemical Transistors

Chae,

Nguyen‐Dang,

Chatsirisupachai

et al. 2023

Adv Funct Materials

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Organic electrochemical transistors (OECTs) have gained considerable attention due to their potential applications in emerging biosensor platforms. The use of conjugated polyelectrolytes (CPEs) as active materials in OECTs is particularly advantageous owing to their functional, water‐processable, and biocompatible nature, as well as their tunable electronic and ionic transport properties. However, there exists a lack of systematic studies of the structure‐property relationships of these materials with respect to OECT performance. This study shows how by tuning the molecular weight of self‐doped CPE (CPE‐K) it is possible to fabricate OECTs with a µC* value of 14.7 F cm−1 V−1 s−1, one order of magnitude higher than previously reported CPE‐based devices. Furthermore, OECTs with a transconductance of 120 mS are demonstrated via device engineering. While CPE‐K batches with different molecular weights show good doping behavior and high volumetric capacitance, as confirmed by spectroelectrochemistry and electrochemical impedance spectroscopy, the medium molecular weight possesses the highest carrier mobility of ≈0.1 cm2 V−1 s−1 leading to the highest transconductance. The enhanced charge transport is due to a favorable charge percolation pathway, as revealed by the combination of X‐ray analysis and conductive atomic force microscope. These insights provide guidelines for further improving the performance of CPE‐based OECTs.

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Section: Resultsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Impact of Molecular Weight on the Ionic and Electronic Transport of Self‐Doped Conjugated Polyelectrolytes Relevant to Organic Electrochemical Transistors

Chae,

Nguyen‐Dang,

Chatsirisupachai

et al. 2023

Adv Funct Materials

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“…As one of the most common and important operating principles for neuromorphic devices, ion migration has shown great potential in realizing the majority of important bio‐mimetic neural functions. [ 99–101 ] The fundamental idea of ion migration is to elaborately control the ionic dynamics inside the material by means of external stimulus, for example, optical pulses [ 73,102–104 ] or electrical field, [ 49,51,52,99,105,106 ] and eventually achieve the variation in intrinsic properties of materials which can be easily measured, such as conductance. With an emphasis on the modulating mechanism, one could classify the ion‐migration implementations into cation filament‐ (Subsection 2.1), anion migration‐ (Subsection 2.2), and electrochemical doping‐based mechanisms (Subsection 2.3).…”

Section: Ion Migrationmentioning

confidence: 99%

“…Reproduced with permission. [ 52 ] Copyright 2022, John Wiley and Sons. d–i) Reconfigurable functions of a single perovskite device simply modulated by electrical pulse, including resistor (d,i), memcapacitor (e), neuron (f), stochastic behavior (g), and synapse (h).…”

Section: Ion Migrationmentioning

confidence: 99%

“…reported reconfigurable dual‐paradigm transistors employing a self‐doped conjugated polyelectrolyte as the functional layer (Figure 3c). [ 52 ] The reconfigurable modulation was accomplished by simply tuning the polarity of applied voltage, which originates from concurrent existence of anion doping and cation dedoping of active material. The resultant reprogrammable transistors were used to execute multiple dynamic Boolean logics, paving the way toward reconfigurable neuromorphic electronics, such as BNNs for deep learning.…”

Section: Ion Migrationmentioning

confidence: 99%

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Reconfigurable Neuromorphic Computing: Materials, Devices, and Integration

Chen

Guo

et al. 2023

Advanced Materials

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Neuromorphic computing has been attracting ever‐increasing attention due to superior energy efficiency, with great promise to promote the next wave of artificial general intelligence in the post‐Moore era. Current approaches are, however, broadly designed for stationary and unitary assignments, thus encountering reluctant interconnections, power consumption, and data‐intensive computing in that domain. Reconfigurable neuromorphic computing, an on‐demand paradigm inspired by the inherent programmability of brain, can maximally reallocate finite resources to perform the proliferation of reproducibly brain‐inspired functions, highlighting a disruptive framework for bridging the gap between different primitives. Although relevant research has flourished in diverse materials and devices with novel mechanisms and architectures, a precise overview remains blank and urgently desirable. Herein, the recent strides along this pursuit are systematically reviewed from material, device, and integration perspectives. At the material and device level, we comprehensively conclude the dominant mechanisms for reconfigurability, categorized into ion migration, carrier migration, phase transition, spintronics, and photonics. Integration‐level developments for reconfigurable neuromorphic computing are also exhibited. Finally, a perspective on the future challenges for reconfigurable neuromorphic computing is discussed, definitely expanding its horizon for scientific communities.This article is protected by copyright. All rights reserved

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Solid‐State Homojunction Electrochemical Transistors and Logic Gates on Plastic

Kwak

Kim

Choi

et al. 2023

Adv Funct Materials

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Organic electrochemical transistors (OECTs) have attracted significant attention due to their unique ionic-electronic charge coupling, which holds promise for use in a variety of bioelectronics. However, the typical electronic components of OECTs, such as the rigid metal electrodes and aqueous electrolytes, have limited their application in solid-state bioelectronics that requires design flexibility and a variety of form factors. Here, the fabrication of a solid-state homojunction OECT consisting of a pristine polymer semiconductor channel, doped polymer semiconductor electrodes, and a solid electrolyte is demonstrated. This structure combines the photo-crosslinking of all of the electronic OECT components with the selective doping of the polymer semiconductor. Three Lewis acids (gold (III) chloride (AuCl 3 ), iron (III) chloride (FeCl 3 ), and copper (II) chloride (CuCl 2 ) ) are utilized as dopants for the metallization of the polymer semiconductor. The AuCl 3 -doped polymer semiconductor with an electrical conductivity of ≈100 S cm −1 is successfully employed as the source, drain, and gate electrodes for the OECT, which exhibited a high carrier mobility of 3.4 cm 2 V −1 s −1 and excellent mechanical stability, with negligible degradation in device performance after 5000 cycles of folding at a radius of 0.1 mm. Homojunction OECTs are then successfully assembled to produce NOT, NAND, and NOR logic gates.

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Dual‐Mode Organic Electrochemical Transistors Based on Self‐Doped Conjugated Polyelectrolytes for Reconfigurable Electronics (Adv. Mater. 23/2022)

Cited by 7 publications

References 0 publications

Impact of Molecular Weight on the Ionic and Electronic Transport of Self‐Doped Conjugated Polyelectrolytes Relevant to Organic Electrochemical Transistors

Impact of Molecular Weight on the Ionic and Electronic Transport of Self‐Doped Conjugated Polyelectrolytes Relevant to Organic Electrochemical Transistors

Reconfigurable Neuromorphic Computing: Materials, Devices, and Integration

Solid‐State Homojunction Electrochemical Transistors and Logic Gates on Plastic

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