“…For infrared detection, various materials are extensively used, including Ge, InGaAs, InAs, and lead chalcogenides (PbTe, PbS and PbSe) [ 2 ]. Among these, PbS films are produced by various growth techniques, such as chemical bath deposition (CBD) [ 3 , 4 , 5 , 6 ], sputtering [ 7 ], electrodeposition [ 8 ], spray pyrolysis [ 9 , 10 ], microwave heating [ 11 , 12 ] and spin-cast of colloidal quantum dots [ 13 , 14 ]. Chemical bath deposition (CBD) is an efficient technique for the synthesis of high quality PbS thin films in laboratory conditions [ 15 ] as well as on large industrial scales [ 16 ].…”