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Semiconductor Physics, Quantum Electronics & Optoelectronics. 2007. V. 10, N 1. P. 088-096.
Effect of oxidation of catalytically active
silicon-based electrodes on water decomposition
V. Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine
41, prospect Nauky, 03028 Kyiv, Ukraine
E-mail: pve18@isp.kiev.ua
Abstract. In this work, we continue to study the revealed phenomenon of current
creation in the electrochemical system with distilled water during its decomposition
without any applied external voltage. Investigated are catalytically active (to decompose
water) electrodes based on silicon with modified surface (due to lapping, texturing,
doping with palladium, creation of silicides) before and after thermooxidizing for 1 hour
in dry oxygen at 850 ºC. Also performed are investigations of time dependences for the
current between silicon electrodes and counter-electrodes made of Al, Pt, Yb when using
the circuit with the external voltage V 0 = ± 9.7 V. Analyzed are the results obtained and
prospects for a further study.
Keywords: current creation, external voltage, water decomposition, catalytically active
electrodes, oxidation.
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