Progress in Physics ›› 2023, Vol. 43 ›› Issue (1): 1-9.doi: 10.13725/j.cnki.pip.2023.01.001

Special Issue: 2024年, 第44卷

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High-Performance Physiological Signal Sensors Based on Stretchable Organic Electrochemical Transistors

ZHANG Chen-hong , CHEN Yan-ping , WANG Gang ∗ , ZHANG Qing-hong , LI Yao-gang , WANG Hong-zhi   

  1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China 
  • Online:2023-02-20 Published:2023-03-22

Abstract:

Recently, organic electrochemical crystals (OECT) using conjugated polymers as channel materials have become a hot research topic due to their ease of preparation, ionelectron conversion capability and biointerface compatibility. However, most of the reported OECT channel materials for OECT are p-type conjugated polymers (hole transport), while few OECTs have been developed based on n-type conjugated polymers (electron transport), and the unbalanced development hinders the realization of complex complementary circuits. The recently reported n-type Poly (benzimidazobenzophenanthroline) (BBL) OECT of polyconjugated polymers provides an effective solution to the above problem. However, BBL films are inherently brittle and cannot be stretched to meet the use of flexible devices, which greatly hinders their application and development. In this work, we propose the preparation of a device stretchable n-type BBL OECT device and verify its feasibility for sweat sensing.

Key words: Organic electrochemical transistors, Conjugated polymers, Stretchable devices; Sweat sensing, Poly (benzimidazobenzophenanthroline) 

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