Preparation of AlSb Thin Films on Brass Substrate by Electro-deposition Technique Using Tri-Sodium Citrate as Complexing Agent

Abstract — In this study Aluminum Antimonide (AlSb) thin films were synthesized by electro-deposition technique using tri-sodium citrate as complexing agent. X-Ray studies were performed on both as-grown as well as on annealed films. The depositon potential was kept at-0.7 V and-0.8 V for a period of 15 minutes. The analysis of X-Ray diffraction spectra of the as-grown and annealed samples shows that the films are of AlSb material and are polycrystalline in the as-grown form. The hot probe analysis indicates that the grown film is of P-type in nature. In order to confirm the results we also used UV-VIS spectroscopy to determine the indirect and direct band gaps and the calculated values are in close agreement with the reported values in the literature. Calculated lattice constant values further clarifies that AlSb films were successfully grown on brass substrate using tri-sodium citrate as a complexing agent which was not reported earlier in the literature to the best of our knowledge