Journal
MATERIALS LETTERS
Volume 63, Issue 23, Pages 1975-1977Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2009.05.060
Keywords
Electrical properties; Ceramics; Nanomaterials; Semiconductors; Sensors
Funding
- National innovation experiment program for University students
- [2009125]
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Pure and Pd-doped In2O3 nanofibers are synthesized via a simple electrospinning method and characterized by scanning electron microscopy and X-ray diffraction. Comparing with pure In2O3 nanofibers, Pd-doped In2O3 nanofibers exhibit much higher sensitivity to ethanol at 200 degrees C. The sensor fabricated from Pd-doped In2O3 nanofibers can detect ethanol down to 1 ppm (the corresponding sensitivity is 4) with good selectivity, and the response and recovery times are 1 and 10 s, respectively. The sensing mechanism and the effect of I'd doping are discussed. The results indicate that the Pd-doped In2O3 nanofibers can be used to fabricate high performance ethanol sensors. (C) 2009 Elsevier B.V. All rights reserved.
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