| Bismuth and bismuth oxides have interesting physical properties. For example bismuth thin films and nanostructures have a very larger magneto-resistance, bismuth oxides are semiconductors with a 2.8 eV band gap at room temperature and they also have been studied for their electrochromic properties for solar cell applications. For some of these applications a better understanding and control of the structure and morphology of the Bi films is required. Hence, the early stages of Bi growth on Au(111) in 0.1 M HClO4 solution were investigated in this work. The Cyclic Voltammetric (CV) technique was used to characterize the behaviour of reversibly adsorbed Bi on Au(111) and monitor Bi overpotential deposition (OPD) and its coverage as a function of time. Structure and morphology of underpotential deposition (UPD) and overpotential deposition (OPD) of Bi on Au(111) single crystal electrodes have been studied previously using in-situ scanning probe microscopy and x-ray diffraction. (Abstract shortened by UMI.). |
