Effect of temperature and time on the structural properties of PbS nanofilms

In this research, lead acetate as a source of Pb^2+ and thiourea as a source of S^2- have been used, and the elects of deposition time (tD 90 min) and deposition temperature (TD: 28, 55°C) on the prepared thin films of Lead-Sulfide have been investigated. In order to investigate the morphology of thin films and crystalline nanostructure of the films, atomic force microscopy and X-ray diraction have been utilized, respectively. Values of lattice constant for prepared PbS films vary in the range of 0.5937- 0.5959 nm. Preferred growth orientation for prepared films is 200. The thickening process of layers has declined after 60 min (t at 28°C: 130-530 nm and t at 55°C: 300-975 nm).