Research Center for Organic Electronics, Yamagata University, 4-3-16, Jonan, Yonezawa, Yamagata, 992-8510, Japan.
Sci Rep. 2020 Feb 12;10(1):2467. doi: 10.1038/s41598-020-59432-2.
Facile fabrication and high ambient stability are strongly desired for the practical application of temperautre sensor in real-time wearable healthcare. Herein, a fully printed flexible temperature sensor based on cross-linked poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) was developed. By introducing the crosslinker of (3-glycidyloxypropyl)trimethoxysilane (GOPS) and the fluorinated polymer passivation (CYTOP), significant enhancements in humidity stability and temperature sensitivity of PEDOT:PSS based film were achieved. The prepared sensor exhibited excellent stability in environmental humidity ranged from 30% RH to 80% RH, and high sensitivity of -0.77% °C for temperature sensing between 25 °C and 50 °C. Moreover, a wireless temperature sensing platform was obtained by integrating the printed sensor to a printed flexible hybrid circuit, which performed a stable real-time healthcare monitoring.
在实时可穿戴医疗保健中，对于温度传感器的实际应用，人们强烈希望其具有易于制造和高环境稳定性。在此，开发了一种基于交联聚（3,4-亚乙基二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）的全印刷柔性温度传感器。通过引入交联剂（3-缩水甘油氧基丙基）三甲氧基硅烷（GOPS）和氟化聚合物钝化剂（CYTOP），显著提高了基于 PEDOT：PSS 的薄膜的湿度稳定性和温度灵敏度。所制备的传感器在环境湿度为 30%RH 至 80%RH 的范围内表现出优异的稳定性，并且在 25°C 至 50°C 之间的温度感测中具有高达-0.77%°C 的高灵敏度。此外，通过将印刷传感器集成到印刷柔性混合电路中，获得了无线温度感测平台，可稳定地进行实时医疗保健监测。
