Ni Lei, Li Xiaoyu, Cai Fangkai, Dong Zhicheng, Deng Yuhong, Jiang Tao, Su Zhengyang, Chang Hao, Zhang Zhongwen, Luo Yang
School of Network & Communication Engineering, Chengdu Technological University, Chengdu 611730, China.
Engineering College of Tibet University, Lhasa 850011, China.
Nanomaterials (Basel). 2023 Apr 7;13(8):1309. doi: 10.3390/nano13081309.
This study focuses on a novel humidity sensor composed of graphene-oxide (GO)-supported MoTe nanosheets. Conductive Ag electrodes were formed on PET substrates by inkjet printing. A thin film of GO-MoTe was deposited on the Ag electrode used for adsorbing humidity. The experiment's results demonstrate that MoTe are attached to GO nanosheets uniformly and tightly. The capacitive output of the sensors with various ratios of GO/MoTe has been tested for different levels of humidity (11.3-97.3%RH) at room temperature (25 °C). As a consequence, the obtained hybrid film exhibits superior sensitivity (94.12 pF/%RH). The structural integrity and interaction of different components were discussed to afford the prominent humidity sensitivity performance. Under the bending condition, the output curve of the sensor has no obvious fluctuation. This work provides a low-cost way to build flexible humidity sensors with high-performance in environmental monitoring and healthcare.
本研究聚焦于一种由氧化石墨烯（GO）负载的碲化钼（MoTe）纳米片组成的新型湿度传感器。通过喷墨印刷在PET基板上形成导电银电极。在用于吸附湿度的银电极上沉积一层GO-MoTe薄膜。实验结果表明，MoTe均匀且紧密地附着在GO纳米片上。在室温（25°C）下，针对不同湿度水平（11.3 - 97.3%RH）测试了具有不同GO/MoTe比例的传感器的电容输出。结果，所获得的混合薄膜表现出优异的灵敏度（94.12 pF/%RH）。讨论了不同组件的结构完整性和相互作用，以实现卓越的湿度敏感性能。在弯曲条件下，传感器的输出曲线没有明显波动。这项工作提供了一种低成本的方法来制造在环境监测和医疗保健方面具有高性能的柔性湿度传感器。
