Flexible temperature sensors are needed for real‐time temperature monitoring in healthcare, disease diagnosis, and ambient environment detection. In this work, a flexible negative temperature coefficient (NTC) temperature sensor based on polyvinyl chloride/carbon black (PVC/CB) was screen printed onto a polyethylene terephthalate substrate. The prepared temperature sensor exhibited high sensitivity (−0.148% C⁻¹), excellent linearity (R ² = 0.995), a fast response time (0.7 s), and good repeatability when used to measure temperatures between 18 C and 44 C. The tunneling effect was used to explain the NTC of the PVC/CB temperature sensor, and its temperature sensing mechanism was proposed. Additionally, the sensor was used to monitor human breathing rates and temperatures, demonstrating its potential for real‐time skin or environmental temperature monitoring.

在医疗保健，疾病诊断和周围环境检测中进行实时温度监控需要灵活的温度传感器。在这项工作中，将基于聚氯乙烯/炭黑（PVC / CB）的柔性负温度系数（NTC）温度传感器丝网印刷到聚对苯二甲酸乙二醇酯基材上。制备的温度传感器显示出高灵敏度（-0.148％C ^-1），出色的线性度（R ²= 0.995），响应时间短（0.7 s），用于测量18 C至44 C之间的温度时具有良好的重复性。隧穿效应用于解释PVC / CB温度传感器的NTC及其温度感应机制被提出。此外，该传感器还用于监测人类的呼吸频率和温度，从而证明了其在实时皮肤或环境温度监测中的潜力。