Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 137, Issue 2, Pages 649-655Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2009.01.042
Keywords
ZnO; KCl; Nanofibers; Humidity sensors; Chemical sensors
Funding
- NNSF of China [10672139]
- National Science Fund for Distinguished Young Scholars of China [60625301]
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KCl-doped ZnO nanofibers are synthesized via an electrospinning method and characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The humidity sensing properties of these nanofibers are investigated by screen-printing them on a ceramic substrate with a pair of Ag-Pd inter-digitated electrodes. The experimental results show that the 5.7wt% KCl-doped ZnO nanofibers hold super-rapid response and recovery, high response value, good reproducibility, linearity, selectivity, and stability at 100 Hz. Especially, the response time and recovery time is only about 2 and 1s, respectively. These results demonstrate the potential application of KCl-doped ZnO nanofibers for fabricating high performance humidity sensors. (C) 2009 Published by Elsevier B.V.
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