Electrosynthesis of cadmium selenide films on a selenium-modified gold surface |
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| Institution: | 1. Department of Applied Chemistry, Kon-Kuk University Chungju Campus, Chungju, Chungbuk 380-701, South Korea;2. Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019-0065, USA;1. Nano Materials and Device Laboratory, Department of Applied Physics, Visvesvaraya National Institute of Technology, South Ambazari Road, Nagpur, 440010 Maharashtra, India;2. Department of Physics, School of Physical Sciences, North Maharashtra University, Jalgaon, 425001 Maharashtra, India;1. Nano Materials and Device Laboratory, Department of Applied Physics, Visvesvaraya National Institute of Technology, South Ambazari Road, Nagpur, 440010, MS, India;2. Department of Physics, School of Physical Sciences, North Maharashtra University, Jalgaon, 425001, MS, India |
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| Abstract: | A two-step method for the growth of CdSe films is described that is based on the initial chemical modification of a polycrystalline gold surface with a selenium overlayer. In the second step, this overlayer is cathodically stripped as Se2− in a Se(IV)-free electrolyte medium (0.1 M Na2SO4) that is dosed with the requisite amount of Cd2+ ions. Unlike the classical cathodic route, this new approach does not suffer from problems with excess Se admixed with CdSe. The two-step approach is validated using a combination of voltammetry, microgravimetry, and photoelectrochemical experiments. |
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