Investigation the Ethanol Gas Sensing Parameters and the Band Gap of Vttria- Stabilized Zirconia with the Addition of Nickel Oxide

In this paper after the formulation and manufacture of thick 8YSZ and 1. 5Ni-8YSZ layers by screen-printing method on Alumina substrate، the amount of YSZ and Ni-YSZ band gaps and the sensitivity of these sensors to ethanol vapor have been studied and compared. The objectives of this study are to examine and compare the amount of band gap، activation energy، sensitivity changes، response and recovery time. Regarding to the sensing results، YSZ causes a lower band gap and better sensitivity than Ni-YSZ، other advantages of the sample without dopant are the lower working temperature and sensitivity at lower temperature.