Electrical conductivity and ethanol sensing of a new perovskite NiSnO 3 sprayed thin film

• DOI: 10.1016/j.matchemphys.2016.07.063
• Publication Date: 2016-07-28T07:19:46Z
• Authors: R. Dridi; A. Mhamdi; A. Labidi; A. Amlouk; M. Amlouk
• Keywords: 02 engineering and technology; 0210 nano-technology

Abstract This work deals with the sensitivity performance of NiSnO3 sprayed thin films against ethanol vapor. First, this film shows a polycrystalline nature by means of AFM observations with a crystallite size close to 50 nm. Also, TEM technique shows uniform in shape and particle size of as prepared NiSnO3. Second, the electrical conductivity was studied using impedance spectroscopy technique in the frequency range 10 Hz−13 MHz at various temperatures (175°C–225 °C). The electrical conductivity appears as the sum of both contribution of the electrical conductivity of grain and grain boundary. Finally, the ethanol sensing performance of the films has been investigated at various concentrations in air at operating temperatures varying from 175 °C to 250 °C. A noticeably sensitivity to ethanol vapor concentration of C = 0.1% is found at T = 225 °C.