Development of High-Performance Bismuth Sulfide Nanobelts Humidity Sensor and Effect of Humid Environment on its Transport Properties
Muhammad Faheem AfsarSchool of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, SingaporeM. A. RafiqDepartment of Physics and Applied Mathematics and Department of Metallurgy and Materials Engineering, Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad 45650, PakistanArifa JamilDepartment of Physics and Applied Mathematics and Department of Metallurgy and Materials Engineering, Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad 45650, PakistanS. Sheik FareedDepartment of Physics and Applied Mathematics and Department of Metallurgy and Materials Engineering, Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad 45650, PakistanFizza SiddiqueDepartment of Physics and Applied Mathematics and Department of Metallurgy and Materials Engineering, Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad 45650, PakistanAlfred Iing Yoong TokSchool of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, SingaporeM.M. HasanDepartment of Physics and Applied Mathematics and Department of Metallurgy and Materials Engineering, Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad 45650, Pakistan
2019en
ABI
Annotatsiya
/g) and pore size (2.5-120 nm) were evaluated through Brunauer-Emmett-Teller (BET) analysis. Relative humidity (RH) sensing properties were studied in the range of 11-97% RH at ambient conditions. The response of the sensor increases linearly with increase in RH. Fast response time (8-10 s) and recovery time (15 s) were observed. Reproducible and large response was also observed between 11 and 97% RH. Small hysteresis (<5%) and long-term stability during 30 days were confirmed. As a function of frequency, capacitance, alternating current conductivity, and electrical complex modulus in the frequency range of 20-2 MHz were studied at 11-97% RH. The sensing mechanism was also studied.
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