Study the Doping Effect with Mn on the Morphology and Optical Properties of ZnS Thin Films Prepared with Pulsed Laser Deposition

Abstract

In this research was to study the effect of Doping manganese Mn Morphology and optical properties of zinc sulfide ZnS thin films , ZnS films were deposited on glass substrates using technology pulse laser Deposition (PLD) under vacuum (10-3 Torr) and the conditions of preparation included substrate temperatures (400 0C), Oxygen pressure (0.1 mbar) and laser energy (700 mJ) using a pulsed (532 nm) Nd:YAG laser , And has a Dope agent by mixing the substance to be Doping (ZnS) with the ratio of grains of impurities (Mn) . Select the topographic properties of films using scanning electron microscope (SEM) and atomic force microscope (AFM), respectively for the purpose of screening surfaces of thin films , And we found that the structural of polycrystalline films , While Optical properties of the films were determined from the transmittance data using Swanepoel model And less increase Doping rates , Transmittances of film were measured by spectrophotometer. noted that the absorbance increases with increasing Doping rates Up to (0.8) , While optical energy gap of at least (3.3-3.6 eV) when ratios Doping (0 - 1.5 Mn%) on the respectively .