A Copper Oxide (CuO) Thin Films Deposited by Spray Pyrolysis Method Youcef Bellal, Antar Bouhank, Hacene Serrar, Tunç Tüken and Gökmen Sığırcık MATEC Web Conf., 253 (2019) 03002 Published online: 14 January 2019 DOI: 10.1051/matecconf/201925303002