Investigate the influence of Al content on the structure and surface morphology of Al:CdS-PVA nanocomposites

Abstract

In this study, Al:CdS-PVA nanocomposites thin films were prepared on glass substrates by the chemical bath deposition (CBD) method. The impact of aluminum (Al) concentrations of (0, 0.04, 0.08, and 0.12) M on the crystal structure and morphology characteristics of the prepared nanocomposites film was investigated. XRD tests show that all of the samples have a polycrystalline crystal structure with a cubic phase for CdS. The (111) plane is the preferred orientation. The Al:CdS-PVA film crystallinity improved, and the crystallite size increased with the increase in Al concentrations. The surface morphology from FESEM images showed that the Al:CdS-PVA nanocomposites film surface is porous. The AFM results showed that surface roughness and RMS values increased with an increasing of impurity