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- W2079062509 abstract "Abstract Copper oxide (CuO) thin films were grown on glass substrates by low cost spray pyrolysis technique for three different molar concentrations (0.05 M, 0.10 M and 0.15 M), at a substrate temperature of 350 °C, and subsequently annealed at 400 °C for 2 h. The effects of precursor concentration and annealing on the structural, electrical and morphological properties of the crystallized films were investigated. X-ray diffractograms of the films showed the formation of single phase CuO with tenorite structure. The electrical properties of the films like carrier concentration, Hall co-efficient ( R H ), mobility and conductivity were studied from Hall effect measurements. The positive values of R H confirmed the p-type conductivity of the films. Resistivity decreased drastically by two orders of magnitude for the annealed films. The microstructures characterized by a scanning electron microscope for 0.15 M concentration of the precursor revealed that the morphology of the films was substantially affected by annealing. The film surface revealed uniformly distributed cluster of peanut shaped grains after annealing. The response of the as deposited and annealed CuO sensor to low concentration of ethanol (10 ppm) was compared. The annealed CuO film showed higher sensor response than the as-deposited CuO film did. The result suggested that annealing causes significant effect on the sensing performance of CuO to ethanol." @default.
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- W2079062509 date "2013-09-01" @default.
- W2079062509 modified "2023-09-29" @default.
- W2079062509 title "Effect of annealing on the properties of nanostructured CuO thin films for enhanced ethanol sensitivity" @default.
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- W2079062509 doi "https://doi.org/10.1016/j.ceramint.2013.03.021" @default.
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