OPTICAL-PROPERTIES OF THIN SOLID FILMS OF LEAD SULFIDE

The technique of electroless chemical deposition was used for preparat ion of thin solid films of lead sulfide (PbS). The thin solid PbS film s were deposited on a glass substrate previously coated with a very th in layer of Cu2S. The optimal temperature of deposition was between 34 3 and 363 K. The thickness of these films was controled by changing th e concentration of the reaction solutions and the deposition time. The optical properties of these thin solid films of different thickness w ere determined by means of near infrared spectroscopy, Raman spectrosc opy and visible spectroscopy.