Study the effect of the method of preparation on the optical properties of thin films (PbS)

	Study the effect of the method of preparation on the optical properties of thin films (PbS)
Diyala Journal For Pure Science
Article 1, Volume 6, Issue 2, 2010, Pages 183-193
Abstract
There are multiple uses of Thin Films as interference in the installation of electronic devices are resistors and Mtsat and Tranzstrut and others, and is the basis for the manufacture of solar cells and photovoltaic, as used in manufacturing reagents Alkahrobesria within the ranges of spectral specific preparation of membranes (PbS) and study the optical properties of the membrane-mediated measurement device (FTIR), where it operating in the range (IR). For the preparation of Thin Films using the system thermal evaporation in a vacuum is placed the substance to be deposited inside the heater resistor in the form of trough and connects Ahoid with bipolar online source of electric current shall also be floor inside the holder of a special and more perpendicular to the Ahoid then is increased power hanging on poles gradually as starting material evaporation and deposition of the membrane is thin on the ground. Composed system, spraying the chemical heat of a sprinkler, pump air, heated electric, dual warming has been the use of both the nitrate of lead (Pb (NO3) 2) which is in powder white color, and material Althaaoria (CS (NH2) 2) to obtain membranes lead sulfide (PbS) study showed that the highest value of the absorption wavelength range (1900-2000 nm) and the average value of absorption coefficient up to (0.208x105cm-1) of the thickness (t = 620 nm) and (0.723x105cm-1) of the thickness (t = 490 nm) of films prepared by evaporation heat, while the highest value of the absorbency of the membranes prepared in a manner spraying chemical emissions at the wavelength (nm 3300) where the value of the absorption coefficient up to ((0.195-0.234) × 105cm-1 of fish (t = 247 nm-t = 82.6 nm), respectively. that thin films (PbS)
Keywords
method of preparation; Optical Properties; thin films; PbS

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