Pulsed laser deposition to investigate structural and optical properties of lead sulfide nanostructure

  • Emad J. Mohammed Uneversity of Wasit College of Science
  • Ahmed K. Abbas University of Wasit College of Science
  • Kadhim A. Aadim University of Baghdad College of Science
Keywords: thin films, nanopartical, pulse laser deposition and lead sulfide


In this work, the structure properties of nano Lead sulfide PbS thin films are studied. Thin samples were prepared by pulse laser deposition and deposited on glass substrates at wavelength 1064nm wavelength with a various laser energies (200,300,400,500)nm. The study of atomic force microscope (AFM) and X-ray diffraction as well as the effect of changing the laser energy on the structural properties has been studied. It has been observed that the membrane formed is of the polycrystalline type and the predominant phase is the plane (111) and (200). The minimum grain size obtained was 16.5 nm at a laser energy about 200 mJ. The results showed that thin films of average granular sizes (75 nm) could be prepared.As for the optical properties, the effect of changing the laser energy on them was studied, and it was found that they have direct allowed transitions in the range of (1.55 to 2.45) eV