Abstract
The paper outlines recent advances in studies on the electrochemical dissolution of silicon made with flicker noise spectroscopy (FNS), a novel phenomenological method of studying the evolution of nonlinear dissipative systems in time, space, and energy. We analyze stochastic components of the anodic current (voltage) during the electrochemical dissolution of silicon and show that FNS provides microscopic-level information on the dissolution kinetics and mechanism. We also study the giant oscillations of voltage during the anodic polarization of silicon and show that it is a collective effect where all local sites at the corroding Si surface are working synchronously to yield an integral oscillatory response of the system. Finally, we discuss the electrical and optical properties of nanocrystalline porous silicon films and show that the FNS method gives the possibility to specify the mechanisms contributing to the electroconduction and luminescent properties of silicon nanostructures.
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Dedicated to the ninetieth anniversary of Ya.M. Kolotyrkin’s birth. Submitted by authors in English.
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Parkhutik, V.P., Timashev, S.F. Informative essence of noise: New findings in the electrochemistry of silicon. Russ J Electrochem 36, 1221–1235 (2000). https://doi.org/10.1007/BF02757698
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DOI: https://doi.org/10.1007/BF02757698