Journal
APPLIED PHYSICS LETTERS
Volume 87, Issue 23, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2140091
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In a basic water-alcohol mixing solution without any other toxically organic solvents, the single crystalline SnO2 nanorods with diameters of 4-15 nm and lengths of 100-200 nm were synthesized using SnCl4 as a precursor. The sensors fabricated from the nanorods exhibited the sensitivity of 31.4 for 300 ppm of ethanol. Both the response and recovery time are short, around 1 s. Moreover, a linear dependence of the sensitivity on the ethanol concentration was observed. These behaviors were well explained by considering the high surface-to-volume ratio of the nanorods. (c) 2005 Americian Institute of Physics.
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