Open AccessStudy of the Effect of Annealing Temperature on the Response of Nano-Films of ZnO to Ammonia Gas Sensor
Author(s) -
Maan Abd-Alameer Salih,
Mohammed Hadi Shinen,
Q. S. Kareem
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1854/1/012008
Subject(s) - materials science , calcination , annealing (glass) , ammonia , nano , coating , thin film , platinum , zinc , electrode , analytical chemistry (journal) , sol gel , membrane , chemical engineering , nanotechnology , composite material , metallurgy , chemistry , chromatography , biochemistry , organic chemistry , engineering , catalysis
Zinc oxide (ZnO) nanoparticles were prepared by sol-gel method and deposited on the substrates (glass gliders and platinum electrodes) by a rotation coating at 2000 rpm. The coated substrate was calcined at 500, 550 and 600 ° C 1hour: The films were determined by XRD and UV, where the results showed their compatibility with the global measurements, and through the results of the test of sensitivity to the membranes of the stomach, we obtained that the film is heat at a temperature of 550 high sensitivity, depending on the surface area of the surface. The Zno thin films were exposed to NH 3 gas with a different concentration of 50 ppm–4000 ppm and the resulting resistance transient was recorded at different operating temperatures (500,550, 600 ) °C.