材料科学
可穿戴计算机
掺杂剂
共轭体系
可穿戴技术
薄膜
聚合物
兴奋剂
光电子学
纳米技术
复合材料
计算机科学
嵌入式系统
作者
Jian Jing Song,Huimin Lu,Lingkuan Meng,Hong Hu,Jingyan Jiang,Lei Zhang,Xiao Hui Li
出处
期刊:Small
[Wiley]
日期:2023-12-05
标识
DOI:10.1002/smll.202308595
摘要
Conjugated polymer has the potential to be applied on flexible devices as an active layer, but further investigation is still hindered by poor conductivity and mechanical stability. Here, this work demonstrates a dopant-enhanced conductive polymer thin film and its application in dimethyl methylphosphonate (DMMP) sensor. Among five comparable polymers this work employs, poly(bisdodecylthioquaterthiophene) (PQTS12) achieves the highest doping efficiency after doped by FeCl3 , with the conductivity increasing by about five orders of magnitude. The changes in Young's modulus are also considered to optimize the conductivity and flexibility of this thin film, and finally the decay of conductivity is only 9.2% after 3000 times of mechanical bending. This work applies this thin film as the active layer of the DMMP gas sensor, which could be operated under 1 mV driving voltage and 28 nW power consumption, with a sustainable durability against bending and compression. In addition, this sensor is provided with alarm capability while exposed to the DMMP atmospheres at different hazard levels. This work expects that this general approach could offer solutions for the fabrication of low-power and flexible gas sensors, and provide guidance for next-generation wearable devices with broader applications.
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