Journal of Solid State Electrochemistry

, Volume 9, Issue 12, pp 845–849 | Cite as

Variable Mott-Schottky plots acquisition by potentiodynamic electrochemical impedance spectroscopy

Original Paper

Abstract

Potentiodynamic electrochemical impedance spectroscopy provides extraction of potential-dependent space charge layer capacitance from potentiodynamic impedance spectra of non-stationary semiconductor–electrolyte interface. The new technique has been applied for acquisition of Mott-Schottky plots of cathodically treated TiO2 anodic films. Cathodic treatment in 1 M H2SO4 increases donor density and flat band potential of TiO2. Freshly doped films show hysteresis in the space charge layer capacitance in cyclic potential scans. The subsequent cycling eliminates the hysteresis but preserves the greater part of the doping effect.

Keywords

Potentiodynamic electrochemical impedance spectroscopy Multivariate electrochemical response analysis Semiconductor-electrolyte interface Mott-Schottky plots 

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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  1. 1.Physico-Chemical Research InstituteBelarusian State UniversityMinskBelarus

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