Flexible, biocompatible temperature sensors are of great importance for future developments in wearable electronic skin. Herein, a high resolution, fast response, biocompatible negative temperature coefficient (NTC) temperature sensor comprised of poly (3,4-ethylenedioxythiophene): poly (styrenesulfonate) (PEDOT: PSS) and phthalocyanine copper (CuPc) is developed. The addition of CuPc with high electron mobility to PEDOT: PSS increases the effective electron transition under the action of thermal energy, and thus its thermoelectric performance of the material is improved. The packaged sensor can monitor temperature changes in the range of 20 °C to 80 °C in real time with high sensitivity (0.1940% °C⁻¹), linearity (R² =0.994) and accuracy (0.1 °C). When the ambient temperature of the sensor changes from 25 °C to 50 °C, the response and recovery time of the sensor are ∼ 1 s. The performance of the sensor has not decreased significantly after 4 weeks of continuous operation, which validates the high reliability of the sensor in the extended working time. Furthermore, the comparison between the PEDOT: PSS/CuPc sensor and commercial infrared thermal imager on different parts of the human body temperature measurement shows that the PEDOT: PSS/CuPc sensor is applicable in electronic skin, medical detection and other fields.

灵活、生物相容的温度传感器对于可穿戴电子皮肤的未来发展非常重要。在此，开发了一种高分辨率、快速响应、生物相容性负温度系数（NTC）温度传感器，由聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸）（PEDOT：PSS）和酞菁铜（CuPc）组成。在PEDOT:PSS中添加具有高电子迁移率的CuPc，增加了热能作用下的有效电子跃迁，从而提高了材料的热电性能。该封装传感器可以实时监测20℃至80℃范围内的温度变化，具有高灵敏度（0.1940%℃⁻¹）、线性度（R²=0.994）和精度（0.1℃）。当传感器的环境温度从25℃变化到50℃时，传感器的响应和恢复时间为∼1s。连续运行4周后，传感器的性能并未出现明显下降，验证了传感器在延长工作时间内的高可靠性。此外，PEDOT：PSS/CuPc传感器与商用红外热像仪对人体不同部位温度测量的对比表明，PEDOT：PSS/CuPc传感器适用于电子皮肤、医疗检测等领域。