Complex impedance spectroscopy charge transfer kinetics

In fact, the impedance spectroscopy of the WO3 photoanodes under strong illumination (ca. 0.3 W/cm ) reveals that the photoelectrode is essentially dominated, in the complex plane, by a kinetic loop the single semicircle with a maximum in the 1-10 Hz interval (depending on the potential) can be reasonably attributed to the charge transfer across the semiconductor-electrolyte interface (Fig. 57). It can be well fitted by a single R QR ) equivalent circuit [78], where R is the ohmic contribution, Q is the constant phase element which takes into account... 

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