Open AccessDeposition Time induced Structural and Optical Properties of Lead Tin Sulphide Thin Films
Author(s) -
John Damisa,
Joseph Onyeka Emegha,
Imosobomeh L. Ikhioya
Publication year - 2021
Publication title -
journal of the nigerian society of physical sciences
Language(s) - English
Resource type - Journals
ISSN - 2714-4704
DOI - 10.46481/jnsps.2021.157
Subject(s) - tin , diffractometer , thin film , deposition (geology) , band gap , tin oxide , materials science , crystallite , analytical chemistry (journal) , refractive index , absorption (acoustics) , inorganic chemistry , chemistry , oxide , metallurgy , nanotechnology , scanning electron microscope , optoelectronics , composite material , paleontology , chromatography , sediment , biology
Lead tin sulphide (Pb-Sn-S) thin films (TFs) were deposited on fluorine-doped tin oxide (FTO) substrates via the electrochemical deposition process using lead (II) nitrate [Pb(NO3)2], tin (II) chloride dehydrate [SnCl2.2H2O] and thiacetamide [C2H5NS] precursors as sources of lead (Pb), tin (Sn) and sulphur (S). The solution of all the compounds was harmonized with a stirrer (magnetic) at 300k. In this study, we reported on the improvements in the properties (structural and optical) of Pb-Sn-S TFs by varying the deposition time. We observed from X-ray diffractometer (XRD) that the prepared material is polycrystalline in nature. UV-Vis measurements were done for the optical characterizations and the band gap values were seen to be increasing from 1.52 to 1.54 eV with deposition time. In addition to this, the absorption coefficient and refractive index were also estimated and discussed.