2020
DOI: 10.1021/acsami.0c07913
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Self-Healable Organic Electrochemical Transistor with High Transconductance, Fast Response, and Long-Term Stability

Abstract: The major challenges in developing self-healable conjugated polymers for organic electrochemical transistors (OECTs) lie in maintaining good mixed electronic/ionic transport and the need for fast restoration to the original electronic and structural properties after the selfhealing process. Herein, we provide the first report of an all solid state OECT that is selfhealable and possess good electrical performance, by utilizing a matrix of poly(3,4ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and no… Show more

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Cited by 55 publications
(75 citation statements)
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References 58 publications
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“…Ko et al fabricated a self-healable all-solid-state OECT by utilizing PEDOT:PSS and a nonionic surfactant Triton X-100 as the channel material and ion-conducting PVA hydrogel as the polymer electrolyte. [162] The obtained device exhibited an ultrahigh transconductance of 48 ± 5 mS, which was maintained after experiencing a cut on the channel. Lee et al developed ultrathin flexible OECTs (2.5 µm) with nonvolatile and thin glycerol gels (6 µm), which enabled the long-term on-skin electrocardiogram (ECG) monitoring without sacrificing the signal-to-noise ratio.…”
Section: In Vitro and In Vivo Probesmentioning
confidence: 89%
See 1 more Smart Citation
“…Ko et al fabricated a self-healable all-solid-state OECT by utilizing PEDOT:PSS and a nonionic surfactant Triton X-100 as the channel material and ion-conducting PVA hydrogel as the polymer electrolyte. [162] The obtained device exhibited an ultrahigh transconductance of 48 ± 5 mS, which was maintained after experiencing a cut on the channel. Lee et al developed ultrathin flexible OECTs (2.5 µm) with nonvolatile and thin glycerol gels (6 µm), which enabled the long-term on-skin electrocardiogram (ECG) monitoring without sacrificing the signal-to-noise ratio.…”
Section: In Vitro and In Vivo Probesmentioning
confidence: 89%
“…[160] In addition, to improve the versatility of PEDOT:PSS-based bioelectronics in smart and wearable electrophysiological sensors, the development of functional materials with high flexibility and durability is required to bear up scratching, wrinkling, and unexpected damage from buckling. To this end, gel-based OECTs have been developed by employing gels (e.g., gelatin [161] and poly(vinyl alcohol) (PVA) [162] ) as electrolyte. Ko et al fabricated a self-healable all-solid-state OECT by utilizing PEDOT:PSS and a nonionic surfactant Triton X-100 as the channel material and ion-conducting PVA hydrogel as the polymer electrolyte.…”
Section: In Vitro and In Vivo Probesmentioning
confidence: 99%
“…[ 43,44 ] Including additives/plasticizers such as ethylene glycol or ionic liquids into the active layer (e.g., poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS)) also enhances transconductance via improved morphologies while maintaining comparable ion uptake. [ 45–49 ]…”
Section: Figurementioning
confidence: 99%
“…[43,44] Including additives/plasticizers such as ethylene glycol or ionic liquids into the active layer (e.g., poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS)) also enhances transconductance via improved morphologies while maintaining comparable ion uptake. [45][46][47][48][49] The interfacial area between the electrolyte (typically liquid) and the active layer (solid) is a critical OECT component since it directly affects ion exchange between the two phases. This raises the intriguing question of whether, how, and to what degree, increasing the electrolyte-semiconductor interfacial area would enhance ion exchange, similar to effects in catalytic and gas sensor systems.…”
mentioning
confidence: 99%
“…Hydrogels are one of the most promising soft materials for creating flexible electrical systems. [ 92,93 ] Doping hydrogels with polyelectrolytes allows their electrical characteristics to be optimized using ion currents.…”
Section: Hydrogelsmentioning
confidence: 99%