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Variable Mott-Schottky plots acquisition by potentiodynamic electrochemical impedance spectroscopy

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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.

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Acknowledgements

This work was supported by Belarusian Foundation for Basic Research (Grant H04MS-014).

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Authors and Affiliations

  1. Physico-Chemical Research Institute, Belarusian State University, 220050, Minsk, Belarus

    Alexander S. Bondarenko & Genady A. Ragoisha

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  1. Alexander S. Bondarenko
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  2. Genady A. Ragoisha
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Correspondence to Genady A. Ragoisha.

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Bondarenko, A.S., Ragoisha, G.A. Variable Mott-Schottky plots acquisition by potentiodynamic electrochemical impedance spectroscopy. J Solid State Electrochem 9, 845–849 (2005). https://doi.org/10.1007/s10008-005-0025-7

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  • DOI: https://doi.org/10.1007/s10008-005-0025-7

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