In2O3-ZnO pyramids like structure prepared by Spray-pyrolysis Technique for gas Sensing Applications

  • Ismaail K. Jasim Department of Physics, College of Education for Pure Science, University of Tikrit, Tikrit, Iraq
  • Isam M. Ibrahim Department of Physics, College of Science, University of Baghdad, Baghdad, Iraq
  • Marwan K. Alyas Department of Physics, College of Education for Pure Science, University of Tikrit, Tikrit, Iraq
Keywords: nano-pyramids, In2O3-ZnO mixed oxide, gas sensor

Abstract

Polycrystalline Indium oxide (In2O3) and Indium oxide-zinc oxide (IZO) thin films mixed with 10% ZnO content were prepared by spray-pyrolysis technique at relatively low substrate temperature (150 ˚C).Field emission scanning electron microscope (FE-SEM) shows that the nanostructure at 10% ZnO content has pyramid like structure. The hall effect measurements show that the prepared samples have n-type charge carriers .The films were examined as gas sensor against H2S gas at different operating temperatures (200, 250 and 300) oC, and it was found that the IZO sample a good sensitivity to H2S gas ~ 572 % at operating temperature 200 oC, with relatively fast response time of 19 s and recovery time of 17 s.

Published
2018-01-29
How to Cite
Jasim, I. K., Ibrahim, I. M., & Alyas, M. K. (2018). In2O3-ZnO pyramids like structure prepared by Spray-pyrolysis Technique for gas Sensing Applications. Iraqi Journal of Science, 59(1A), 67-74. Retrieved from https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/111
Section
Physics