Abstract
(Na0.5Bi0.5)0.94TiO3–Ba0.06TiO3 (NBT–BT6) nanofibers were synthesized by electrospinning and characterized by X-ray diffraction, field emission scanning electron microscopy, and transmission electron microscopy. The humidity sensor was fabricated by coating NBT–BT6 nanofiber on a ceramic substrate with Ag–Pd interdigitated electrodes. At 100Hz, the impedance of the humidity sensor changed by more than five orders of magnitude with the relative humidity (RH) changing from 11% to 95%. The response time and recovery time were about 2s and 50s, respectively, and the maximum hysteresis was around 5% RH. The results indicate that NBT–BT6 nanofibers are of great potential for high-performance humidity sensor applications.
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