Synthesis and morphological study of Mn doped ZnS films

Abstract

Low temperature chemical bath deposition (CBD) technique has been employed to synthesize Manganese (Mn) doped ZnS films. The synthesized material was systematically characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDAX), Fourier transform infrared spectroscopy (FTIR), and photoluminescence (PL) techniques. XRD spectra revealed the existence of cubic zinc blande structure and nanocrystalline nature of synthesized material. PL spectra shows an intense band at 486 nm (2.55 eV), while the intensity of band obtained at lower energy region 375, 416 nm were decreased in the synthesized film, which indicate that incorporation of Mn decreased the surface defect in ZnS films. Surface structure of Mn doped ZnS nanoparticle was confirmed by FTIR. SEM images depicted the spherical shaped particles evenly distributed throughout the substrate. It was noticed that presence of Mn enhances the agglomeration process, resulting the larger sized particles.