期刊
APPLIED PHYSICS LETTERS
卷 96, 期 10, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3358389
关键词
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资金
- Natural Science Foundation of China [50831005, 10874184, 10904145]
- Major State research program of China [2006CB300402]
- Anhui Natural Science Foundation [090414188]
Based on a sol-gel technique and the colloidal monolayer template, ion-doped SnO2 ordered porous films were fabricated, and the corresponding gas-sensing properties were studied. The sensitivity to the given test gases strongly depends on the doping species and doping amount. Importantly, when the doping amount is 1% M, the Cr+3 and Pd+2 doped porous films demonstrate a greatly enhanced sensitivity and strong selectivity to ethanol and ammonia, respectively. The improved sensing properties are attributed to the doping-induced surface modification of the films. Such ion-doped porous films are expected to bring new opportunities for application of future porous film-based gas sensors. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3358389]
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