Figueiredo Gonçalo, Correia Sandra F H, Falcão Bruno P, Sencadas Vitor, Fu Lianshe, André Paulo S, Ferreira Rute A S
Department of Physics and CICECO - Aveiro Institute of Materials, University of Aveiro, Aveiro, 3810-193, Portugal.
Department of Electrical and Computer Engineering and Instituto de Telecomunicações, Instituto Superior Técnico, University of Lisbon, Lisbon, 1049-001, Portugal.
Adv Sci (Weinh). 2024 Sep;11(35):e2400540. doi: 10.1002/advs.202400540. Epub 2024 Jul 15.
The growing prevalence of Internet of Things (IoT) devices hinges on resolving the challenge of powering sensors and transmitters. Addressing this, supply-less IoT devices are gaining traction by integrating energy harvesters. This study introduces a temperature sensor devoid of external power sources, achieved through a novel luminescent solar concentrator (LSC) device based on a stretchable, adhesive elastomer. Leveraging a lanthanide-doped styrene-ethylene-butylene-styrene matrix, the LSC yielded 0.09% device efficiency. The resultant temperature sensor exhibits a thermal sensitivity of 2.1%°C and a 0.06 °C temperature uncertainty, autonomously transmitting real-time data to a server for user visualization via smartphones. Additionally, the integration of LED-based lighting enables functionality in low-light conditions, ensuring 24 h cycle operation and the possibility of having four distinct thermometric parameters without changing the device configuration, stating remarkable robustness and reliability of the system.
物联网（IoT）设备的日益普及取决于解决为传感器和发射器供电的挑战。为应对这一问题，无电源物联网设备通过集成能量收集器而越来越受到关注。本研究介绍了一种无需外部电源的温度传感器，它是通过一种基于可拉伸粘性弹性体的新型发光太阳能聚光器（LSC）实现的。利用掺杂镧系元素的苯乙烯-乙烯-丁烯-苯乙烯基体，该LSC的器件效率为0.09%。所得温度传感器的热灵敏度为2.1%/°C，温度不确定度为0.06°C，可自动将实时数据传输到服务器，供用户通过智能手机进行可视化。此外，基于LED的照明集成实现了低光照条件下的功能，确保了24小时循环运行，并且无需改变设备配置就有可能拥有四个不同的温度测量参数，表明该系统具有显著的稳健性和可靠性。
