期刊
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
卷 9, 期 12, 页码 845-849出版社
SPRINGER
DOI: 10.1007/s10008-005-0025-7
关键词
potentiodynamic electrochemical impedance spectroscopy; multivariate electrochemical response analysis; semiconductor-electrolyte interface; Mott-Schottky plots
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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