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Preparation, characterization, and gas-sensing properties of Pd-doped In2O3 nanofibers |
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| Authors: | Li Liu Tong Zhang Lianyuan Wang Yunxia Tian |
| Affiliation: | a College of Physics, Jilin University, Changchun 130012, PR China b National Laboratory of Superhard Materials, Jilin University, Changchun 130012, PR China c State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China |
| Abstract: | 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 °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 Pd doping are discussed. The results indicate that the Pd-doped In2O3 nanofibers can be used to fabricate high performance ethanol sensors. |
| Keywords: | Electrical properties Ceramics Nanomaterials Semiconductors Sensors |
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