Effect of Annealing temperature on the Structural, Optical and Sensitivity Properties of Nanostructure SnO2 Films to CO2 and NH3 Gas. Iraqi Journal of Science. 2023;55(3B):1264-1286. Accessed December 18, 2024. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/11609