Effect of complexing agent on spray deposited EuS thin films


Complexing agent ethelene-diamine tetra acetic acid (EDTA) (sodium salt) is added in the aqueous solution of Europium chalcogenide (EuS) to deposit thin films on non-conductive glass substrates using spray pyrolysis technique at different substrate temperatures. The films synthesized were studied by XRD, SEM, EDAX and UV-Visible spectrometry. The effect of complexing agent was studied on morphological and optical properties. The XRD studies reveal that the material formed on glass substrates is europium sulphide, films are of polycrystalline in nature. The size for the deposited material is about 200 μm. The SEM studies show that total substrate surface uniformly covered by the film along with cracks.