Enhancement of Hydrothermally Co3O4 Thin Films as H2S Gas Sensor by Loading Yttrium Element. Baghdad Sci.J [Internet]. 2019 Mar. 17 [cited 2024 May 3];16(1(Suppl.):0221. Available from: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/3237