Özet:

In this study, lead sulfide (PbS) films were coated on microscope glass at the substrate temperature of 370±5 °C by ultrasonic chemical spray pyrolysis technique, which is an easy and economical method. The effect of PbS films obtained with different molarity Pb additions on their structural, surface, optical, and electrical properties was investigated. Their optical, structural, surface, and electrical properties were characterized using UV, spectrophotometer, scanning electron microscopy, Atomic force microscopy, and X-ray spectroscopy analyses. From the X-ray diffraction (XRD) analysis, the PbS thin film was found to have a hexagonal structure. The roughness of the PbS thin film was determined by Atomic Force Microscopy (AFM). From the optical absorption spectrum, it was calculated that the PbS thin film has a narrow optic band gap of 1.69-1.89 eV. The thickness values of the produced films were determined using the spectroscopic ellipsometry technique. The Cauchy-Urbach model was used to determine the thickness of the films. The potential for use of PbS films for photovoltaic solar cell applications was investigated.

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