Electrical conductivity of Zn2SnO4 thin films along with wettability and EtOH-sensing
| Autor: | A. Amlouk, Mosbah Amlouk, C. Mrabet, A. Labidi, N. Mahdhi, R. Dridi |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Mechanical Engineering Metals and Alloys Oxide Analytical chemistry 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Dielectric spectroscopy Contact angle chemistry.chemical_compound chemistry Mechanics of Materials Electrical resistivity and conductivity Transmission electron microscopy Materials Chemistry Crystallite Wetting Thin film 0210 nano-technology |
| Zdroj: | Journal of Alloys and Compounds. 708:769-779 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2017.03.055 |
| Popis: | Zinc stannic oxide Zn2SnO4 (ZTO) thin films have been successfully synthesized with spray pyrolysis method. These films were investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), and impedance spectroscopy. XRD study shows that Zn2SnO4 films crystallizes in cubic structure with a preferred orientation of the crystallites along (311) direction. TEM observations display uniform in shape and particle size of as-prepared Zn2SnO4. Atomic force microscopy (AFM) images reveal a rough surface morphology. The electrical conductivity, conduction mechanism, relaxation model of these films were carried out with impedance spectroscopy technique in the frequency range 10 Hz−13 MHz at various temperatures (380°C-450 °C). The ethanol sensing performance of Zn2SnO4 films has been investigated with two different concentrations in air at operating temperatures varying from 175 °C to 250 °C and shown a good response at low temperature T = 225 °C. Moreover, the hydrophobic investigations have been carried out in terms of water contact angle and reveals that the Zn2SnO4 thin films have a hydrophobic nature. Finally, the photoluminescence measurements, carried out at room temperature show three peaks located at 374, 461 and 528 nm respectively. The latest results have been discussed in terms of the wettability measurements of such films. |
| Databáze: | OpenAIRE |
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