Abstract
In this work, the structure properties of nano Lead sulfide PbS were studied. Thin samples were prepared by pulse laser deposition and deposited on glass substratesby Nd:YAG laser at (1064nm) wavelength with a various laser energies (200,300,400,500)nm. The study of atomic force microscope (AFM) and X-ray diffraction and 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 (59.43 nm) at a laser energy of (200mJ). The results showed the possibility of preparing thin films with average granular sizes (68 nm). 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 (1.47 to 1.80) eV.
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