Details

Autor(en) / Beteiligte

• Wu, Zhilin
• Yang, Jie
• Sun, Xia
• Wu, Yingjie
• Wang, Ling
• Meng, Gang
• Kuang, Delin
• Guo, XueZheng
• Qu, Weijie
• Du, Bingsheng
• Liang, Chengyao
• Fang, Xiaodong
• Tang, Xiaosheng
• He, Yong

Titel

An excellent impedance-type humidity sensor based on halide perovskite CsPbBr3 nanoparticles for human respiration monitoring

Ist Teil von

• Sensors and actuators. B, Chemical, 2021-06, Vol.337, p.129772, Article 129772

Ort / Verlag

Lausanne: Elsevier B.V

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• [Display omitted] •The regular cubic shape and well crystallized CsPbBr3 NPs were synthesized by the hot injection method.•An impedance-type humidity sensor based on CsPbBr3 nano particles was demonstrated via spin-coating method.•The fabricated sensor exhibited, reversible, low working-voltage and stable RH sensing performance at room temperature.•A wearable wireless respiratory rate monitoring mask based on CsPbBr3 nano particles humidity sensor was developed.•The complex impedance spectroscopy was adopted to explore the mechanisms of the CsPbBr3 nano particles to various RHs. Humidity sensors with fast response, high accuracy and low-power consumption are critical importance in smart home and health monitoring applications. Herein, we demonstrate an excellent impedance relative humidity sensor based on all-inorganic halide perovskite CsPbBr3 nanoparticles (NPs) under low working-voltage (20 mV). The CsPbBr3 NPs humidity sensor exhibits fast response and recovery behavior at room temperature. Moreover, the sensor demonstrates excellent repeatability, low hysteresis and good stability. The humidity sensing mechanism of CsPbBr3 NPs is further studied and discussed by employing an electrochemical impedance spectroscopy measurement. Furthermore, the respiratory monitoring face mask based on CsPbBr3 humidity sensor shows accurate and stable performance, suggesting perovskite CsPbBr3 NPs based humidity sensor have great potential in future real-time health status monitoring applications.