Self-Healable Organic Electrochemical Transistor with High Transconductance, Fast Response, and Long-Term Stability.,ACS Applied Materials & Interfaces

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Self-Healable Organic Electrochemical Transistor with High Transconductance, Fast Response, and Long-Term Stability.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-07-03 , DOI: 10.1021/acsami.0c07913
Jieun Ko ₁ , Xihu Wu ₁ , Abhijith Surendran ₁ , Bening Tirta Muhammad ₂ , Wei Lin Leong ₁

Affiliation

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 self-healing process. Herein, we provide the first report of an all-solid-state OECT that is self-healable and possesses good electrical performance, by utilizing a matrix of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and a nonionic surfactant, Triton X-100, as a channel and an ion-conducting poly(vinyl alcohol) hydrogel as a quasi-solid-state polymer electrolyte. The fabricated OECT exhibits high transconductance (maximum 54 mS), an on/off current ratio of ∼1.5 × 10³, a fast response time of 6.8 ms, and good operational stability after 68 days of storage. Simultaneously, the OECT showed remarkable self-healing and ion-sensing behaviors and recovered ∼95% of its ion sensitivity after healing. These findings will contribute to the development of high-performance and robust OECTs for wearable bioelectronic devices.

中文翻译：

具有高跨导，快速响应和长期稳定性的自修复有机电化学晶体管。

开发用于有机电化学晶体管（OECT）的自修复共轭聚合物的主要挑战在于保持良好的混合电子/离子传输以及在自修复过程之后需要快速恢复原始电子和结构性能的需求。在此，我们通过利用聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）的基质和可修复的，具有良好电性能的全固态OECT提供了第一份报告。非离子表面活性剂Triton X-100作为通道，离子导电聚乙烯醇水凝胶作为准固态聚合物电解质。制成的OECT具有较高的跨导（最大54 mS），开/关电流比约为1.5×10 ³，6.8毫秒的快速响应时间以及68天的存储后良好的操作稳定性。同时，OECT表现出了显着的自我修复和离子感应行为，并且在愈合后恢复了约95％的离子敏感性。这些发现将有助于可穿戴生物电子设备的高性能和鲁棒性OECT的开发。

更新日期：2020-07-29

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