EFFECT OF COMPLEXING AGENT ON THE THICKNESS AND TRANSMITTIVITY OF CHEMICAL BATH DEPOSITED LEAD SELENIDE (PbSe+) THIN FILMS

Abstract

Lead Selenide (PbSe) thin films were successfully deposited on glass substrates using the chemical bath deposition (CBD) method at room temperature (300 K). The study focused on examining the effect of the complexing agent, EDTA, on both the thickness and optical transmittance of the films. Structural characterization was conducted using an X-ray mini diffractometer (MD-10), and the results confirmed that the films were crystalline with a cubic structure, exhibiting a prominent diffraction peak corresponding to the (200) plane of PbSe. The pH of the deposition solutions, measured with a Mac Digital pH meter (MSW-552), was found to be in the alkaline range. It was observed that an increase in film thickness led to a corresponding decrease in transmittance, indicating the potential application of these films as thermal window coatings or in opaque coatings.