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Published in:
2015 | OriginalPaper | Chapter
57. Electrochemical Behavior of Silicon in Light and Dark Environments in 0.5 M Sulfuric Acid
Authors : M. Bounoughaz, H. Boukercha, A. Khemmari, M. Allaoua, E. Salhi
Published in: Progress in Clean Energy, Volume 1
Publisher: Springer International Publishing
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Abstract
The aim of this work is to study the effect of lights, dark, and cooling time on the electrochemical properties of the photovoltaic silicon working electrodes in 0.5 M sulfuric acid medium. The silicon samples were heated until 1,200 °C in appropriate oven and cooled with the injection of argon gas at a different flow rates that allow the decrease of the temperature to 650 °C, respectively, after 2, 4, and 8 h. By corrosion potential vs. time, resistance polarization technique and Tafel plot curves, we have studied the behavior of silicon electrodes, and we have noticed that the electrochemical properties of silicon were affected by temperature of the medium, by the cooling time and by the lighting power. The microscopic examination of the electrodes shows a significant change in the morphology of materials after the polarization tests.