“…and selenides (CdSe, Cu x Se, CoSe, PbSe, Sb 2 Se 3 , SnSe, SnSe 2 , ZnSe, NiSe, HgSe, MoSe, Bi 2 Se 3 , Ag 2 Se, As 2 S 3 ). In some cases metal hydroxide thin fi lms are deposited and subsequently converted into oxide fi lms [156] . To obtain good -quality and cheaper semiconductor thin fi lms, several optimized experimental conditions have been developed and the infl uence of various factors such as temperature, concentration, stirring, and others has been studied.…”