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<p>Organic electrochemical transistors (OECTs) are promising technologies for biosensing and brain-inspired computing due to their low-power signal amplification and neuron-like behavior. However, their manufacturing remains complex, especially when fabricated into flexible forms. To address the growing demand for flexible OECTs in wearable bioelectronics, in this work, we propose: <b>i)</b> a rapid and low-cost fabrication approach using flexible PCB (fPCB) technology and customized inkjet printing; <b>ii)</b> a non-aqueous gel-gated approach to improve the electrochemical stability of flexible OECTs associated with fPCBs; and <b>iii)</b> the above two approaches help accomplish the following concept: low-cost, integrated, and in-sensing computing system can be more readily realized with flexible OECT devices. This platform has been validated for scalability, stability, and performance in real-world applications, paving the way for developing low-cost, flexible, multifunctional OECT systems.</p>

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A fully-integrated flexible in-sensor computing circuit based on gel-gated organic electrochemical transistors

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年8月21日

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  • Xinyu Tian,
  • Jing Bai,
  • Dingyao Liu,
  • Guangxi Lu,
  • Shiming Zhang

摘要

Organic electrochemical transistors (OECTs) are promising technologies for biosensing and brain-inspired computing due to their low-power signal amplification and neuron-like behavior. However, their manufacturing remains complex, especially when fabricated into flexible forms. To address the growing demand for flexible OECTs in wearable bioelectronics, in this work, we propose: i) a rapid and low-cost fabrication approach using flexible PCB (fPCB) technology and customized inkjet printing; ii) a non-aqueous gel-gated approach to improve the electrochemical stability of flexible OECTs associated with fPCBs; and iii) the above two approaches help accomplish the following concept: low-cost, integrated, and in-sensing computing system can be more readily realized with flexible OECT devices. This platform has been validated for scalability, stability, and performance in real-world applications, paving the way for developing low-cost, flexible, multifunctional OECT systems.