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Articles you may be interested inEnhanced ultraviolet electroluminescence from ZnO nanowires in TiO 2 / ZnO coaxial nanowires/poly(3,4ethylenedioxythiophene)-poly(styrene-sulfonate) heterojunction J. Appl. Phys. 107, 034310 (2010); 10.1063/1.3304896 Room-temperature high-sensitivity H 2 S gas sensor based on dendritic ZnO nanostructures with macroscale in appearanceSensing characteristics of the drop-cast thin films of poly͑3-hexylthiophene͒ ͑P3HT͒, ZnO nanowires, and P3HT:ZnO-nanowire hybrids with different compositions have been studied for various gases, namely, NO 2 , H 2 S, NH 3 , CH 4 , and CO. At room temperature, pure P3HT and ZnO-nanowire films were highly sensitive to NO 2 and H 2 S, moderately sensitive to CO, and nearly insensitive to NH 3 and CH 4 . P3HT:ZnO-nanowire hybrid films, with increasing ZnO-nanowire content, exhibited gradual enhancement in NO 2 sensitivity, while reducing sensitivity for H 2 S. P3HT:ZnO-nanowire ͑1:1 ratio by weight͒ films were found to be highly selective for NO 2 . Plausible mechanisms explaining the enhanced NO 2 selectivity by hybrid films are discussed.

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