传统的导电聚合物由于灵敏度或拉伸性差不适用于柔性电子设备,而无机导电材料与有机聚合物的相容性难题,导致有机导电材料成为电阻应变传感器的核心。通过一步溶液法制备透明且可高度拉伸的聚合物电极,该电极可用于电阻应变传感器,且制备方法简单易操作。制备的聚合物电极可承受的拉伸应变>150%,电导率为 1.4×10-4S/cm,在可见光谱范围内平均透射率>80%。应变传感器由导电聚合物电极制成,制备过程简单,成本低。组装后的应变传感器应变系数为1049.9,可用于检测应变≥0.5％的拉伸或压缩形变,稳定性和重复性高。
Conductive organic materials are the core of resistive strain sensors,since phase separation limits the concentration of inorganic materials in a polymer matrix leading to poor electrical conductivity.But traditional conductive polymers are not good candidate for use in flexible electric devices due to low or ultralow sensitivity and stretchability.The development of transparent,highly stretchable polymer electrodes by one-step solution process was reported.This electrode tolerated extreme tensile strain exceeding 150%,featured the ionic conductivity of 1.4×10-4S/cm.The average transmittance of metal-free electrodes in the visible spectrum range was higher than 80%,which suggested that they had great potential for applications in optoelectronics.The strain sensors were fabricated by conductive polymer electrode,making the process simple,low-cost and scalable.The as-assembled strain sensors can be used to reflect both stretching and compressing with high sensitivity (maximum gauge factor of 1049.9.It can be used to detect tensile or compressive deformation with strain ≥0.5%,exhibiting high stability and repeatability.
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